TEF6901AH/V4,557_技术文档

TEF6901A

Integrated car radio

Rev. 03 — 20 March 2008

Product data sheet

1. General description

The TEF6901A is a single-chip car radio integrated circuit with FM/AM tuner, stereo

decoder, weak signal processing and audio processing. Radio Data System (RDS)/Radio

Broadcast Data System (RBDS) demodulator for radio data reception is included.

FM tuner with double conversion to IF1 = 10.7 MHz and IF2 = 450 kHz with integrated

image rejection for both IF1 and IF2; integrated channel ﬁlter with variable bandwidth

control; capable of US FM, Europe FM, Japan FM and Eastern Europe FM. AM tuner with

double conversion to IF1 = 10.7 MHz and IF2 = 450 kHz; capable of Long Wave (LW),

Medium Wave (MW) and full range Short Wave (SW) (11 m to 120 m bands).

Multiplex (MPX) stereo decoder, ignition noise blanker and extensive weak signal

processing.

Audio processing with ﬂexible source selection, volume, balance, fader, input gain control

and inaudible tuning mute. Integrated audio ﬁlters for bass and treble and loudness control

function.

The device can be controlled via the fast-mode I²C-bus (400 kHz) and includes

autonomous tuning functions for easy control without microcontroller timing. No manual

alignments are required.

2. Features

I FM Radio Frequency (RF) front-end with large dynamic range

I Integrated FM channel ﬁlter with controlled bandwidth

I Fully integrated FM demodulator

I Fully integrated stereo decoder with high immunity for birdy noise

I FM noise blanker with adaptive detection at MPX and level

I Signal quality detection: level, AM wideband, frequency deviation, ultrasonic

noise/adjacent channel

I FM weak signal processing: stereo blend, high cut control and soft mute

I AM RF Automatic Gain Control (AGC) circuit for external cascode AGC and Positive

Intrinsic Negative (PIN) diode AGC

I Dual AM noise blanking system

I AM weak signal processing: high cut control and soft mute

I Low phase noise local oscillator

I In-lock detection for optimized adaptive Phase-Locked Loop (PLL) tuning speed

I Crystal oscillator reference with low harmonics

I Inaudible soft slope tuning mute for AM and FM

I Sequential state machine supporting each tuning action

TEF6901A

NXP Semiconductors

Integrated car radio

I Integrated RDS/RBDS radio data demodulator

I Flexible audio input source selection

I Integrated audio processing and tone ﬁltering

I Treble, bass and loudness tone control

I Volume, balance, fader and input gain control

I Audio controls with Audio Step Interpolation (ASI) for pop-free function

I Compact Disc (CD) dynamics compression

I Volume Unit (VU)-meter audio level read-out

3. Quick reference data

Table 1.

Symbol

Quick reference data

Parameter

Conditions

Min Typ

Max

Unit

Supply voltage

V_CCanalog supply voltage on pins VCC,

8

8.5

9

V

VCCPLL, VCCVCO, VCCRF,

AMMIX2OUT1, AMMIX2OUT2,

MIX1OUT1 and MIX1OUT2

Supply current in FM mode

I_CC

total supply current inclusive I_V60

-

102

89

-

mA

Supply current in AM mode

I_CC

total supply current inclusive I_V60

AM overall system parameters

f_tune

AM tuning frequency

sensitivity voltage

LW

144

522

2.3

-

288

1710

26.1

-

kHz

MHz

µV

MW

-

SW

-

V_sens

f_RF= 990 kHz; m = 0.3;

50

f_mod= 1 kHz; B_AF= 2.15 kHz;

(S+N)/N = 26 dB; dummy aerial

15 pF/60 pF

S/N

ultimate signal-to-noise ratio

total harmonic distortion

54

-

58

-

dB

%

THD

200 µV < V_RF< 1 V; m = 0.8;

0.4

1

f_AF= 400 Hz

IP3

3rd-order intercept point

∆f = 40 kHz

-

130

-

dBµV

FM overall system parameters

f_tune

FM tuning frequency

65

-

108

-

MHz

V_sens

sensitivity voltage (RF input voltage ∆f = 22.5 kHz; f_mod= 1 kHz;

2

µV

at (S+N)/N = 26 dB)

DEMP = 1; B = 300 Hz to 22 kHz;

measured with 75 Ω dummy

antenna and test circuit

(S+N)/N

maximum signal plus noise-to-noise V_i= 3 mV; ∆f = 22.5 kHz;

-

60

-

dB

ratio of MPXAM output voltage

f_mod= 1 kHz; DEMP = 1;

B = 300 Hz to 22 kHz; measured

with 75 Ω dummy antenna and test

circuit

THD

IP3

total harmonic distortion

3rd-order intercept point

∆f = 75 kHz

-

0.5

1

-

%

∆f = 400 kHz

120

dBµV

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

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TEF6901A

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Integrated car radio

Table 1.

Symbol

Quick reference data …continued

Parameter

Conditions

Min Typ

Max

Unit

Stereo decoder path

α_cs

channel separation

f_FMMPX= 1 kHz

40

70

-

dB

S/N

signal-to-noise ratio

f_MPXAMIN= 20 Hz to 15 kHz;

referenced to 1 kHz at 91 % FM

modulation; DEMP = 1

THD

total harmonic distortion

FM mode; DEMP = 1; measured

with 15 kHz brick-wall low-pass

ﬁlter; f_MPXAMIN= 200 Hz to 15 kHz

-

0.3

-

%

Tone/volume control

V_i(max)

maximum input voltage

THD = 0.2 %; G_vol= −6 dB;

pins INAL, INAR, INAC, INBL,

INBR, INC and IND

2

-

V

THD

total harmonic distortion

conﬁgured as non-inverting,

single-ended inputs;

0.02 0.1

%

f_audio= 20 Hz to 10 kHz;

V_i= 1 V (RMS)

G_vol

volume/balance gain control

see Table 83

[1]

maximum setting

minimum setting

-

20

−75

1

-

dB

G_step(vol)

G_treble

step resolution

treble gain control

TRE[2:0] = 111; TREM = 1

TRE[2:0] = 111; TREM = 0

14

−14

2

G_step(treble)step resolution gain

G_bassbass gain control

BAS[3:0] = 0111; BASM = 1

BAS[3:0] = 0111; BASM = 0

14

−14

2

G_step(bass)step resolution gain

[1] The input gain setting ING and the volume setting VOL deﬁne the overall volume. The overall range is limited to −83 dB to +28 dB. For

values > +28 dB the actual value is +28 dB. For overall values < −83 dB the actual value is mute.

4. Ordering information

Table 2.

Ordering information

Type number Package

Name

Description

Version

TEF6901AH

QFP64

plastic quad ﬂat package; 64 leads (lead length 1.6 mm); body 14 × 14 × 2.7 mm SOT393-1

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

3 of 107

TEF6901A

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Integrated car radio

6. Pinning information

6.1 Pinning

1

2

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

CPOUT

VTUNE

LFOUT

RFOUT

LROUT

RROUT

ADDR

SCL

3

VCCPLL

PLLGND

i.c.

4

5

6

VTCM

7

VTC

SDA

8

IFMAGC

TRFAGC

DAAOUT

FMMIX1IN1

FMMIX1IN2

VCCRF

RFGND

IAMAGC

i.c.

DGND

RDCL

RDDA

RDSGND

LEVEL

VCC

TEF6901AH

9

10

11

12

13

14

15

16

GND

VREF

V60

008aaa003

Fig 2. Pin conﬁguration for QFP64

6.2 Pin description

Table 3.

Pin description

Symbol

CPOUT

VTUNE

VCCPLL

PLLGND

i.c.

1

Description

charge pump output

2

tuning voltage; 3 mA charge pump output

tuning PLL supply voltage

3

4

PLL ground

5

internally connected; leave open

Intermediate Frequency (IF) ﬁlter reference voltage

IF ﬁlter center voltage

VTCM

6

VTC

7

IFMAGC

TRFAGC

DAAOUT

8

PIN diode current FM AGC

9

FM and AM RF AGC time constant

antenna Digital Auto Alignment (DAA) output

10

TEF6901A_3

Product data sheet

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TEF6901A

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Table 3.

Pin description …continued

Symbol

FMMIX1IN1

FMMIX1IN2

VCCRF

RFGND

IAMAGC

i.c.

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

Description

FM mixer 1 input 1

FM mixer 1 input 2

AM/FM RF supply voltage

RF ground

PIN diode current AM AGC

internally connected; leave open

AM PIN diode DC bias voltage

feedback for cascode AM AGC

cascode AM AGC

VDCPIN

VAMCASFB

VAMCAS

AMMIX1DEC

AMMIX1IN

AMMIX1REF

MIX1OUT1

MIX1OUT2

IFGND

AM mixer 1 decoupling

AM mixer 1 input

AM mixer 1 reference

AM and FM mixer 1 output 1 at IF1

AM and FM mixer 1 output 2 at IF1

IF ground

IF1DEC

IF1IN

AM and FM mixer 2 decoupling

AM and FM mixer 2 input

AM mixer 2 output 1 at IF2

AM mixer 2 output 2 at IF2

AM IF AGC and FM keyed AGC time constant

AM IF2 input decoupling

AM IF2 input

AMMIX2OUT1

AMMIX2OUT2

TAMIFKAGC

AMIF2DEC

AMIF2IN

V60

input for FM ﬁlter and demodulator supply current

reference voltage for noise decoupling

ground

VREF

GND

VCC

8.5 V supply voltage

LEVEL

AM and FM level voltage output

RDS ground

RDSGND

RDDA

RDS/RBDS demodulator data and quality output

RDS/RBDS demodulator clock input or output

digital ground

I²C-bus Serial Data (SDA) input and output

I²C-bus Serial Clock (SCL) input

I²C-bus slave address select input

right rear audio output

RDCL

DGND

SDA

SCL

ADDR

RROUT

LROUT

left rear audio output

RFOUT

LFOUT

right front audio output

left front audio output

AGND

analog ground

XTAL1

crystal oscillator 1

XTAL2

crystal oscillator 2

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Product data sheet

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TEF6901A

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Integrated car radio

Table 3.

Pin description …continued

Symbol

IND

52

53

54

55

56

57

58

59

60

61

62

63

64

Description

audio input D, signal input

audio input C, common mode or signal input

audio input B, right channel

audio input B, left channel

INC

INBR

INBL

INAC

audio input A, left channel inverted (or other options)

audio input A, right channel

INAR

INAL

audio input A, left channel

MPXAMIN

MPXAMOUT

VCCVCO

VCOFDB

VCOTNK

VCOGND

MPX and AM audio input to radio processing

MPX and AM audio output from tuner part

Voltage-Controlled Oscillator (VCO) supply voltage

VCO feedback

VCO tank circuit

VCO ground

7. Functional description

7.1 FM mixer 1

The FM quadrature mixer 1 converts FM RF (65 MHz to 108 MHz) to an IF frequency of

10.7 MHz. The FM mixer provides image rejection and a large dynamic range. Low and

high injection Local Oscillator (LO) can be selected via the I²C-bus.

7.2 FM RF AGC

AGC detection at the FM front-end mixer input with programmable threshold. When the

threshold is exceeded, the PIN diode drive circuit sources a current to an external PIN

diode circuit, keeping the RF signal level constant. Keyed AGC function is selectable via

the I²C-bus and uses the in-band level information derived from the limiter. The AGC PIN

diode drive circuit can optionally deliver a ﬁxed current; this local mode can be used for

search tuning on absolute RF levels. In AM mode, the FM AGC PIN diode drive circuit can

be set to source a ﬁxed current into the external FM PIN diode circuitry.

7.3 FM mixer 2

The FM quadrature mixer 2 converts 10.7 MHz IF1 to 450 kHz IF2 and includes image

rejection with the integrated channel ﬁlter. Two gain settings can be selected to

compensate for high ceramic ﬁlter insertion loss.

7.4 FM IF2 channel ﬁlter

The order and dynamic range of the FM IF2 channel ﬁlter is designed for operation with

only one external ceramic ﬁlter. The ﬁlter characteristic is optimized to combine high

selectivity with low distortion. The bandwidth of the ﬁlter can be set to a range of ﬁxed

settings or automatically via the bandwidth control algorithm. When the automatic mode is

selected the bandwidth depends on the signal conditions.

TEF6901A_3

Product data sheet

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Integrated car radio

7.5 FM limiter and level detection

The limiter ampliﬁes the IF ﬁlter output signal, removes AM modulations from the IF signal

and supplies a well deﬁned signal for the FM demodulator. From the limiter also the Radio

Signal Strength Information (RSSI) is derived which is converted to a suitable level voltage

with minimum temperature drift.

7.6 FM demodulator

The fully integrated FM demodulator converts the IF signal from the limiter to the

FM multiplex output signal with low distortion.

7.7 Center frequency and bandwidth tuning and center frequency DAA

The center frequency as well as the bandwidth of both the IF ﬁlter and demodulator are

coupled to the crystal reference frequency. A coarse alignment (IFCAP) sets the circuit

operating range and the center frequency ﬁne adjustment is achieved with a 6-bit

alignment (IFCF).

7.8 Bandwidth control algorithm

The bandwidth of the IF ﬁlter can be selected with 5 bits, directly via I²C-bus or

automatically via the bandwidth control algorithm. The bandwidth control algorithm

detects the amount of adjacent channel interference, the deviation of the desired signal,

detuning, multipath and signal strength to deﬁne the optimum bandwidth setting of the

IF ﬁlter. Flexibility on the algorithm settings is provided via the I²C-bus control.

7.9 VCO and dividers

The varactor tuned LC oscillator together with the dividers provides the local oscillator

signal for both AM and FM front-end mixers. The VCO has an operating frequency of

approximately 160 MHz to 250 MHz. In FM mode the VCO frequency is divided by 2 or 3.

These dividers generate in-phase and quadrature-phase output signals used in the

FM front-end mixer for image rejection. In AM mode the VCO frequency is divided by 6, 8,

10, 16 or 20 depending on the selected AM band. The amplitude of the VCO is controlled

by a digital AGC to ensure a safe oscillation start-up at a wide range of the loaded Q.

7.10 Crystal oscillator

The crystal oscillator provides a 20.5 MHz signal. A divider-by-two generates in-phase

and quadrature-phase mixer frequencies for the conversion from IF1 to IF2 including

image rejection. The reference divider generates from the crystal frequency various

reference frequencies for the tuning PLL. Also timing signals for the sequential machine

as well as references for the integrated FM channel ﬁlter, the stereo decoder and the

integrated audio ﬁlters and the RDS demodulator are derived from the crystal reference.

7.11 Tuning PLL

The tuning PLL locks the VCO frequency divided by the programmable divider ratio to the

reference frequency. Due to the combination of different charge pump signals in the

PLL loop ﬁlter, the loop parameters are adapted dynamically. Tuning to different

RF frequencies is done by changing the programmable divider ratio. The tuning step size

is selected with the reference frequency divider setting.

TEF6901A_3

Product data sheet

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TEF6901A

NXP Semiconductors

Integrated car radio

7.12 Antenna DAA

For FM operation the antenna Digital Auto Alignment (DAA) measures the VCO tuning

voltage and multiplies it with a factor deﬁned by the 7-bit DAA setting to generate a tuning

voltage for the FM antenna tank circuit (RF selectivity). In AM mode the DAA setting

controls a ﬁxed voltage.

7.13 AM RF AGC control

The AM front-end is designed for the application of an external Junction Field Effect

Transistor (JFET) low noise ampliﬁer with cascode AGC and PIN diode AGC both

controlled by an integrated AGC control circuit. Four AGC thresholds of the detector at the

ﬁrst mixer input are selectable via I²C-bus. Detectors at the RF mixer input and at the

AMIF2 input prevent undesired overload (see Figure 40). AGC information can be read

out via I²C-bus. The PIN diode current drive circuit includes a pull-up current source for

reverse biasing of the PIN diode, when the AGC is not active to achieve a low parasitic

capacitance.

7.14 AM mixer 1

The large dynamic range AM mixer converts AM RF (144 kHz to 26.1 MHz) to an IF

frequency of 10.7 MHz.

7.15 AM IF noise blanker

The spike detection for the AM IF noise blanker is at the output of the AM front-end mixer.

Blanking is realized at the second AM mixer.

7.16 AM IF AGC ampliﬁer and demodulator

The 450 kHz IF2 signal after the ceramic channel selection ﬁlter is ampliﬁed by the

IF AGC ampliﬁer and demodulated.

7.17 AM level detection

The IF2 signal used for AM IF AGC and demodulation is also used in the limiter circuit for

in-band level detection.

7.18 AM and FM level DAA

The start and slope of the level detector output are programmable to achieve level

information independent of gain spread in the signal channel.

7.19 AM and FM IF counter

The output signal from the limiter is used for IF counting in both AM and FM.

7.20 Tuning mute

A soft slope tuning mute is controlled by the sequential machine for different tuning

actions to eliminate audible effects of tuning and band switching.

TEF6901A_3

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TEF6901A

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Integrated car radio

7.21 FM stereo decoder

A low-pass ﬁlter provides additional suppression of high frequency interferences at the

stereo decoder input and the necessary signal delay for FM noise blanking.

The MPX signal is decoded in the stereo decoder part. An integrated oscillator and pilot

PLL is used for the regeneration of the 38 kHz subcarrier. The required 19 kHz

and 38 kHz signals are generated by division of the oscillator output signal in logic

circuitry.

By means of a 19 kHz quadrature detector the pilot PLL oscillator frequency is locked to

the incoming 19 kHz stereo pilot. A pilot level voltage derived from a 19 kHz in-phase

detector is used for stereo detection and for generation of an anti-phase 19 kHz signal to

remove the pilot tone from the audio signal.

The signal is then decoded in the decoder part. The L-R side signal is demodulated using

the 38 kHz subcarrier and combined with the main signal to the left and right audio

channel. A ﬁne adjustment is done by adjusting the gain of the L-R signal. A smooth mono

to stereo takeover is achieved by controlling the efﬁciency of the matrix by the Stereo

Noise Control (SNC) signal from the weak signal processing block.

7.22 FM and AM AF noise blanker

The FM or AM tuner operation selects between two noise blanker operations optimized for

FM or AM ignition noise suppression.

In FM mode the noise blanker operates as a modiﬁed sample and hold circuit with

ultrasonic noise detection on MPX and detection of noise spikes on level.

In AM mode the audio signal is muted during the interference pulse triggered by slew-rate

detection of the audio signal.

7.23 Fixed high cut and high cut control

The high cut part is a low-pass ﬁlter circuit with seven bandwidth settings. The cut-off

frequencies of the ﬁlter curves can be selected to match different application requirements

(ﬁxed high cut).

The high cut circuit also provides a dynamic control of the ﬁlter response, the High Cut

Control (HCC). This function is controlled by the HCC signal from the weak signal

processing.

7.24 De-emphasis

The signal passes the low-pass ﬁlter de-emphasis block and is then fed to the source

selector. The de-emphasis time constant can be selected between the standards of 50 µs

and 75 µs.

7.25 Weak signal processing

The weak signal processing block detects quality degradations in the incoming signal and

controls the processing of the audio signal accordingly. The weak signal processing block

has three different quality criteria: The average value of the level voltage, AM components

on the level voltage (WAM = wideband AM) and high frequency components in the MPX

signal (USN = ultrasonic noise).

TEF6901A_3

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TEF6901A

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Integrated car radio

In the weak signal processing block these signals are combined in speciﬁc ways and used

for the generation of control signals for soft mute, stereo blend (SNC = stereo noise

control) and HCC. Detector time constants of soft mute, HCC and SNC can be selected

independently.

In AM mode, soft mute and HCC are controlled by the average value of the level voltage.

7.26 Audio step interpolation

The tone/volume blocks of source selector, volume/balance, bass/loudness, fader and

output mute include the Audio Step Interpolation (ASI) function. This minimizes audible

pops by smoothing the transitions in the audio signal during the switching of the controls.

7.27 Source selector

The source selector selects one out of several input sources:

• One internal stereo signal (AM/FM tuner)

• Seven input pins allow many combinations of external sources by means of ﬂexible

input selection

Three of the seven input pins can connect to:

– 1 stereo signal with ground input for common mode rejection (CD)

– 1 stereo signal and 1 mono signal

Four more input pins can connect to:

– 1 stereo signal (AUX) and 1 mono signal with common mode rejection or

differential input (PHONE)

– 1 stereo signal (AUX) and 2 mono signals (e.g. NAV and BEEP)

– 2 stereo signals (AUX and AUX-2)

– 1 stereo signal with common mode rejection (CD-2) and 1 mono signal (e.g.

BEEP)

– 1 stereo signal with differential input (CD-symmetrical)

7.28 VU-meter read

The input audio level of external sources can read out via the I²C-bus. Audio level

information is available on a logarithmic scale. In radio mode the AM or FM modulation

index is available in the same way.

7.29 Volume and balance

The volume/balance control is used for volume setting and also for balance adjustment.

The control range of the volume/balance control is between +20 dB and −75 dB in steps

of 1 dB.

7.30 CD compression

Dynamic volume compression is available for external input sources. This option is

generally used for audio from CD or other digital formats to reduce the very high dynamic

range of these signals into a range suitable for the car environment.

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7.31 Bass

Integrated car radio

The bass tone control stage controls the low audio frequencies with a modiﬁed shelve

curve response. The control range is between +14 dB and −14 dB in steps of 2 dB. Four

different ﬁlter cut-off frequencies can be selected.

7.32 Treble

The treble tone control stage controls the high audio frequencies with a shelve curve

response. The control range is between +14 dB and −14 dB in steps of 2 dB. Four

different ﬁlter cut-off frequencies can be selected.

7.33 Loudness

An integrated loudness function can be activated which controls bass and treble in relation

to the user volume setting. The control range of the bass frequencies is limited to 20 dB

and the optional treble range to 4 dB. Different volume ranges can be selected for the

loudness control.

7.34 Fader

The fader is located at the end of the tone/volume chain. The balance between the front

and rear channel can be controlled by attenuation of either the front or the rear channel.

Control range is 0 dB to −64 dB with a step size of 1 dB. Optionally the fader attenuation

can be activated for front and rear channels together.

7.35 RDS/RBDS demodulator

The RDS demodulator recovers and regenerates the continuously transmitted RDS or

RBDS data stream that may be part of the FM MPX signal and provides the signals clock

(RDCL) and data (RDDA) for further processing by a hardware or software RDS decoder.

Unbuffered demodulator output and buffered 16-bit output mode are available. The output

modes are compatible with stand-alone demodulator devices as well as digital and analog

signal processor standards. In case of buffered output mode additional RDS Quality

(RDQ) demodulation quality information is available optional.

8. I²C-bus protocol

SDA and SCL HIGH and LOW internal thresholds are speciﬁed according to both 2.5 V

and 3.3 V I²C-bus, however also SDA and SCL signals from a 5 V bus are supported. The

maximum I²C-bus communication speed is 400 kbit/s in accordance with the I²C-bus fast

mode speciﬁcation.

S

ACK-s

P

SLAVE ADDRESS W

MSA

DATA

data transferred

(n bytes + acknowledge)

001aad051

Fig 3. Write mode

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S

SLAVE ADDRESS R

ACK-s

DATA

ACK-m

DATA

NA

P

data transferred

001aad049

(n − 1 bytes + acknowledge)

Fig 4. Read mode

Table 4.

Code

S

Description of I²C-bus format

Description

START condition

Slave address W

Slave address R

1100 0000b for pin ADDR grounded

1100 0010b for pin ADDR ﬂoating

1100 0001b for pin ADDR grounded

1100 0011b for pin ADDR ﬂoating

acknowledge generated by the slave

acknowledge generated by the master

ACK-s

ACK-m

NA

not acknowledge generated by the master

mode and subaddress byte

data byte

MSA

Data

P

STOP condition

8.1 Read mode

Application restriction to use the read mode: Read transmissions should not be

stopped after read byte 4 (IFBW) since this will disturb level read-out, weak signal

processing and bandwidth control. Read transmission can be stopped after any of the

other read bytes 0 to 3, 5 or 6.

The read data is loaded into the I²C-bus output register at the ACK clock pulse preceding

the data byte.

Table 5.

Read register overview

Name

Data byte

Reference

0

1

2

3

4

5

6

IFCOUNTER

LEVEL

USN/WAM

MOD

Section 8.1.1

Section 8.1.2

Section 8.1.3

Section 8.1.4

Section 8.1.5

Section 8.1.6

Section 8.1.7

IFBW

ID

TEMP

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TEF6901A

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8.1.1 Read mode: data byte IFCOUNTER

Table 6.

IFCOUNTER - format of data byte 0

7

6

5

4

3

2

1

0

IFCM1

IFCM0

IFCS

IFCA

IFC3

IFC2

IFC1

IFC0

Table 7.

Bit

IFCOUNTER - data byte 0 bit description

Symbol Description

7 and 6

IFCM[1:0] IF counter mode; IFCM reads 00 immediately after I²C-bus start of

PRESET, SEARCH, AFU, JUMP or CHECK until the ﬁrst IFC result of the

new tuning is available.

00 = no new counter result available (IFC value is previous result or

reset state)

01 = new counter result available (IFC value is new result)

10 = counter result from AF update (IFC value is AF result, value is

held until I²C-bus read). Also the detector information of LEV, USN,

WAM and MOD shows AF update results.

11 = Power-On Reset (POR) or undeﬁned state of the state machine is

detected. The I²C-bus data is reset to POR state.

5

4

IFCS

IFCA

IF counter sign

0 = the IF counter result indicates a positive RF frequency error

1 = the IF counter result indicates a negative RF frequency error

IF counter accuracy

0 = IF counter result with 1 kHz resolution in FM mode and 0.5 kHz

resolution in AM mode

1 = IF counter result with 8 kHz resolution in FM mode and 4 kHz

resolution in AM mode

3 to 0

IFC[3:0]

IF counter result; see Table 8

Table 8.

IF counter result

IFC3 IFC2 IFC1 IFC0 Deviation from nominal value in FM

Deviation from nominal value in AM

IFCA = 0

IFCA = 1

IFCA = 0

IFCA = 1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

0 kHz to 1 kHz

1 kHz to 2 kHz

2 kHz to 3 kHz

3 kHz to 4 kHz

4 kHz to 5 kHz

5 kHz to 6 kHz

6 kHz to 7 kHz

7 kHz to 8 kHz

8 kHz to 9 kHz

9 kHz to 10 kHz

10 kHz to 11 kHz

11 kHz to 12 kHz

12 kHz to 13 kHz

reset state

0 kHz to 0.5 kHz

0.5 kHz to 1 kHz

1 kHz to 1.5 kHz

1.5 kHz to 2 kHz

2 kHz to 2.5 kHz

2.5 kHz to 3 kHz

3 kHz to 3.5 kHz

3.5 kHz to 4 kHz

4 kHz to 4.5 kHz

4.5 kHz to 5 kHz

5 kHz to 5.5 kHz

5.5 kHz to 6 kHz

6 kHz to 6.5 kHz

reset state

-

16 kHz to 24 kHz

24 kHz to 32 kHz

32 kHz to 40 kHz

40 kHz to 48 kHz

48 kHz to 56 kHz

56 kHz to 64 kHz

64 kHz to 72 kHz

72 kHz to 80 kHz

80 kHz to 88 kHz

88 kHz to 96 kHz

96 kHz to 104 kHz

8 kHz to 12 kHz

12 kHz to 16 kHz

16 kHz to 20 kHz

20 kHz to 24 kHz

24 kHz to 28 kHz

28 kHz to 32 kHz

32 kHz to 36 kHz

36 kHz to 40 kHz

40 kHz to 44 kHz

44 kHz to 48 kHz

48 kHz to 52 kHz

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

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TEF6901A

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Integrated car radio

Table 8.

IF counter result …continued

IFC3 IFC2 IFC1 IFC0 Deviation from nominal value in FM

Deviation from nominal value in AM

IFCA = 0

IFCA = 1

IFCA = 0

IFCA = 1

1

0

1

0

1

13 kHz to 14 kHz

14 kHz to 15 kHz

15 kHz to 16 kHz

104 kHz to 112 kHz

112 kHz to 120 kHz

≥ 120 kHz

6.5 kHz to 7 kHz

7 kHz to 7.5 kHz

7.5 kHz to 8 kHz

52 kHz to 56 kHz

56 kHz to 60 kHz

≥ 60 kHz

After a tuning action, which is activated by the state machine, the IF counter is reset at

that moment when tuning is established (PLL in-lock). The ﬁrst counter result is available

from 2 ms after reset. For FM further results can be obtained from 4 ms, 8 ms, 16 ms and

32 ms after reset, the increasing count time attenuates inﬂuence of FM modulation on the

counter result. After this, the counter continues at the maximum count time of 32 ms (see

Figure 5). For AM the count time is ﬁxed to 2 ms and results are available every 2 ms.

After AF Update (AFU) sampling the IF counter read value is held (IFCM = 10) (see

Figure 6, Figure 17 and Figure 18) for easy I²C-bus read-out. The counter itself remains

active in the background in 2 ms count time mode. The IF counter data hold is released

after I²C-bus read.

IFCM reads 00 immediately after I²C-bus start of PRESET, SEARCH, AFU, JUMP or

CHECK until the ﬁrst new tuning IFC result is available.

tuning

f1

f2

2 ms 2 ms

4 ms

8 ms

16 ms

32 ms

time

32 ms

16 ms

8 ms

4 ms

2 ms

counter time

2

I C-bus

reset

f2

register

001aab785

Fig 5. IF counter in FM mode after tuning

TEF6901A_3

Product data sheet

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TEF6901A

NXP Semiconductors

Integrated car radio

tuning for AF update

f1

f2

f1

time

2 ms

2 ms 2 ms 2 ms 2 ms 2 ms 2 ms 2 ms 2 ms 2 ms 2 ms 2 ms

4 ms

8 ms

16 ms

32 ms

16 ms

8 ms

counter time

4 ms

2 ms

reset

2 ms

reset

2

I C-bus

hold of counter result of f2 until read-out

f1

register

001aab786

read-out of counter result f2

Fig 6. IF counter in FM mode during and after AF update

8.1.2 Read mode: data byte LEVEL

Table 9.

7

LEVEL - format of data byte 1

6

5

4

3

2

1

0

LEV7

LEV6

LEV5

LEV4

LEV3

LEV2

LEV1

LEV0

Table 10. LEVEL - data byte 1 bit description

Bit

Symbol

Description

7 to 0

LEV[7:0]

level detector; this byte indicates the LEVEL voltage between

0.25 V (LEV = 0) and 4.25 V (LEV = 255) from the tuner part;

V

_LEVEL= ¹⁄₆₄LEV[7:0] + 0.25 V; see Figure 7

After AF update sampling the level read value is held (indicated by IFCM = 10) for easy

I²C-bus read-out. The level detector remains active in the background. The LEV data hold

is released after I²C-bus read.

To reduce the inﬂuence of modulation in AM mode the LEV information is additionally

ﬁltered by a slow 60 ms detector. Fast level information is made available during

AF update and check tuning.

For standard operation the following level alignment (byte LEVELALGN; see Table 43) is

used:

FM and AM level slope; ∆LEV = 51 (∆V_LEVEL= 0.80 V) at ∆V_RF= 20 dB (measured at

V_RF= 200 µV and V_RF= 20 µV)

FM mode level start; LEV = 78 (V_LEVEL= 1.47 V) at V_RF= 20 µV

AM mode level start; LEV = 63 (V_LEVEL= 1.24 V) at V_RF= 20 µV

TEF6901A_3

Product data sheet

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TEF6901A

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Integrated car radio

001aab521

4

V

LEVEL

(V)

3

2

1

0

−4

−3

−2

−1

2

10

1

10

ANT

10

(mV)

V

Fig 7. FM RF antenna input signal and level output voltage

8.1.3 Read mode: data byte USN/WAM

Table 11. USN/WAM - format of data byte 2

7

6

5

4

3

2

1

0

USN3

USN2

USN1

USN0

WAM3

WAM2

WAM1

WAM0

Table 12. USN/WAM - data byte 2 bit description

Bit

Symbol

Description

7 to 4

USN[3:0] ultrasonic noise detector; this value indicates the USN content of the

MPX audio signal; see Figure 24

3 to 0

WAM[3:0] wideband AM detector; this value indicates the WAM content of the

LEVEL voltage; see Figure 24

After AF update sampling the USN and WAM read value is held (indicated by IFCM = 10)

for easy I²C-bus read-out. The USN and WAM detectors remain active in the background.

The USN and WAM data hold is released after I²C-bus read.

TEF6901A_3

Product data sheet

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TEF6901A

NXP Semiconductors

Integrated car radio

8.1.4 Read mode: data byte MOD

Table 13. MOD - format of data byte 3

7

6

5

4

3

2

1

0

MOD4

MOD3

MOD2

MOD1

MOD0

STIN

TAS1

TAS0

Table 14. MOD - data byte 3 bit description

Bit

Symbol

Description

7 to 3

MOD[4:0] modulation detector; this value indicates the audio modulation; see

Table 15

FM between 0 kHz and 150 kHz FM deviation

AM between 0 % and 200 % modulation

FM offset detector; a read value of 31 indicates offset detection. The

offset detector is part of the FM bandwidth control algorithm and detects

adjacent channel breakthrough.

VU-meter; when an external audio source is selected and VU-meter read

is active (see subaddress 17h; see Table 97) MOD indicates the audio

input level (RMS) between 0 V and 2 V; see Table 15.

2

STIN

stereo indicator; this bit indicates if a stereo pilot signal has been

detected

0 = no pilot signal detected

1 = pilot signal is detected and the FM stereo decoder is activated

1 and 0

TAS[1:0]

Tuning action state; state machine information. The signal TAS informs

about internal control functions of the tuner action state machine. This

way the progress of tuner actions can be monitored by the

microcontroller.

00 = inactive

01 = starting mute

10 = PLL tuning

11 = tuning ready with mute active

Table 15. MOD detector

MOD4 MOD3 MOD2 MOD1 MOD0 FM radio ∆f AM radio m VU

External source

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

< 1.5 kHz

1.5 kHz

3 kHz

< 2 %

2 %

-

< 0.02 V

−34 dB 0.02 V

−28 dB 0.04 V

−24 dB 0.06 V

−22 dB 0.08 V

−20 dB 0.1 V

−18 dB 0.13 V

−16 dB 0.16 V

−14 dB 0.2 V

−12 dB 0.25 V

−10 dB 0.32 V

4 %

4.5 kHz

6 kHz

6 %

8 %

7.5 kHz

9.5 kHz

12 kHz

15 kHz

19 kHz

24 kHz

30 kHz

38 kHz

10 %

13 %

16 %

20 %

25 %

32 %

40 %

50 %

−8 dB

−6 dB

0.4 V

0.5 V

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

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TEF6901A

NXP Semiconductors

Integrated car radio

Table 15. MOD detector …continued

MOD4 MOD3 MOD2 MOD1 MOD0 FM radio ∆f AM radio m VU

External source

0

1

:

1

0

:

1

0

:

0

1

0

1

:

1

0

1

0

1

0

1

:

47 kHz

60 kHz

75 kHz

95 kHz

120 kHz

150 kHz

-

63 %

−4 dB

0.63 V

80 %

−2 dB

0.8 V

100 %

0 dB

1 V

125 %

2 dB

1.25 V

160 %

4 dB

1.6 V

200 %

6 dB

2 V

-

:

-

:

-

:

1

0

1

-

offset

detection

The indicated amplitude levels are approximate values.

In the case of FM radio, carrier modulation is measured (MPX FM deviation). Timing is

ﬁxed with fast 30 ms release time. Depending upon reception conditions and internal

offsets small modulation levels may be indicated as MOD[4:0] = 0 0000b. After AF update

sampling the MOD read value is held (indicated by IFCM = 10) for easy I²C-bus read-out.

The MOD detector remains active in the background. The MOD data hold is released after

I²C-bus read.

In the case of AM radio, carrier modulation is measured (AM). Timing is ﬁxed with fast

30 ms release time. Modulation may exceed 100 % in cases of special modulation

schemes as used by some stations. After AF update sampling, the MOD read value is

held (indicated by IFCM = 10) for easy I²C-bus read-out. The MOD detector remains

active in the background. The MOD data hold is released after I²C-bus read.

With external source selection and VU-meter mode disabled (AVUM = 0 and COMP = 0)

FM or AM modulation is indicated equal to radio mode.

With external source selection and VU-meter mode enabled (AVUM = 1 or COMP = 1) the

audio input level of the external source is indicated (i.e. the audio level as found on the line

input pins). For stereo signals left and right channels are combined for MOD read

(0.5 × L + 0.5 × R). VU-meter timing is deﬁned by setting HTC. For AVUM control see

subaddress 17h; see Table 97. In case of AF update sampling the AM or FM modulation

value is indicated with data hold (indicated by IFCM = 10) for easy I²C-bus read-out. The

MOD data hold is released after I²C-bus read and VU-meter indication continues.

TEF6901A_3

Product data sheet

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TEF6901A

NXP Semiconductors

Integrated car radio

8.1.5 Read mode: data byte IFBW

Table 16. IFBW - format of data byte 4

7

6

5

4

3

2

1

0

RAGC1

RAGC0

ASIA

IFBW4

IFBW3

IFBW2

IFBW1

IFBW0

Table 17. IFBW - data byte 4 bit description

Bit

Symbol

Description

7 and 6

RAGC[1:0] RF AGC indicator; PIN diode current on pins IAMAGC or IFMAGC

00 =

FM: < 0.05 mA

AM: < 0.1 mA

01 =

FM: 0.05 mA to 0.5 mA

AM: 0.1 mA to 0.5 mA

10 = 0.5 mA to 2.5 mA

11 = > 2.5 mA

5

ASIA

ASI active; this bit indicates activity of the audio step interpolation

function

0 = ASI is not active

1 = ASI step is in progress

4 to 0

IFBW[4:0] FM IF ﬁlter bandwidth control; 57 kHz (0 0000) to 165 kHz (1 1111). The

bandwidth read data equals the write data deﬁnition (at DYN = 0; see

Table 28).

8.1.6 Read mode: data byte ID

Table 18. ID - format of data byte 5

7

6

5

4

3

2

1

0

IFCAPG

-

ID2

ID1

ID0

Table 19. ID - data byte 5 bit description

Bit

Symbol

Description

7

IFCAPG

IF ﬁlter gear; read value is used for IFCAP adjustment (byte IFCAP);

see Table 47

6 to 3

2 to 0

-

reserved

ID[2:0]

device type identiﬁcation 000 = TEF6901A

TEF6901A_3

Product data sheet

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TEF6901A

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Integrated car radio

8.1.7 Read mode: data byte TEMP

Table 20. TEMP - format of data byte 6

7

6

5

4

3

2

1

0

TEMP7

TEMP6

TEMP5

TEMP4

TEMP3

TEMP2

TEMP1

TEMP0

Table 21. TEMP - data byte 6 bit description

Bit

Symbol

Description

7 to 0

TEMP[7:0] on-chip temperature; 1 step ≈ 1 K; relative indication

8.2 Write mode

The device is controlled by the I²C-bus. After the Integrated Circuit (IC) address the MSA

byte contains the control of the tuning action via the bits MODE[2:0] and subaddressing

via bits SA[4:0] (see Figure 8).

All circuits are controlled by the CONTROL register. Any data change in the CONTROL

register has immediate effect and will change the operation of the circuit accordingly. The

subaddress range 00h to 05h includes data that may lead to audible disturbance when

changed. Therefore the subaddress range 00h to 05h is not loaded in the CONTROL

register directly but loaded in a BUFFER register instead. This allows the IC to take care

of tuning actions and mute control, freeing the microcontroller from cumbersome controls

and timings. The subaddress range of 06h onwards does not contain such critical data.

I²C-bus information in this range will be loaded in the CONTROL register directly (at

acknowledge of each byte).

Controlled by a state machine the BUFFER data will be loaded in the CONTROL register

for new settings. However at the same time the CONTROL data is loaded in the BUFFER

register. This register swap action allows a fast return to the previous setting because the

previous data remains available in the BUFFER register (see Figure 10, Figure 11 and

Figure 12).

Via MODE several operational modes can be selected for the state machine. MODE offers

all standard tuning actions as well as generic control for ﬂexibility. The state machine

controls the tuner directly by controlling the I²C-bus data. Internal circuits like the IF

counter, mute and weak signal processing are controlled complementary to the tuner

action. The state machine operation starts at the end of transmission (P = STOP). In case

a previous action is still active this is overruled and the new action deﬁned by MODE is

started immediately.

When only the address byte is transmitted no action is started and no setting is changed,

this can be used to test the presence of the device on the bus. To minimize the I²C-bus

transmission time only bytes that include data changes need to be written. Following the

MSA byte the transmission can start at any given data byte deﬁned by the subaddress

(SA) bits. In case of MODE = preset, search or load the value of buffered data that is not

overwritten by the new transmission will equal the control register content, i.e. the current

tuner state. Instead in case of MODE = buffer, AF update, jump, check or end any not

overwritten BUFFER data remains to be the existing BUFFER register content, i.e. the

previous tuner state.

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

21 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

After power-on reset, all registers, including the reserved registers, should be initialized

with their default settings (see Table 22) using a preset mode tuning action (see Table 25).

The tuning mute circuit is muted. An action of the state machine is required to de-mute the

circuit, for this purpose preset mode (bits MODE[2:0] = 001) is best ﬁtted since it assures

fast settling of all parameters before mute is released.

Table 22. Write mode subaddress overview

Subaddress

00h

Name

Default

Reference

BANDWIDTH

PLLM

1111 1110

0000 1000

0111 1110

0100 0000

0000 0000

0010 0000

1000 0100

0010 0000

0000 1000

0100 1010

1000 0101

0110 0110

0111 0100

0110 1111

0110 1010

0001 1010

0000 1010

0011 0000

0000 1100

0000 0000

0000 1111

1000 0000

0000 1100

0000 0110

0000 0000

Section 8.2.2

Section 8.2.3

Section 8.2.4

Section 8.2.5

Section 8.2.6

Section 8.2.8

Section 8.2.9

Section 8.2.10

Section 8.2.11

Section 8.2.12

Section 8.2.13

Section 8.2.14

Section 8.2.15

Section 8.2.16

Section 8.2.17

Section 8.2.18

Section 8.2.19

Section 8.2.20

Section 8.2.21

Section 8.2.22

Section 8.2.23

Section 8.2.24

Section 8.2.25

Section 8.2.26

Section 8.2.27

Section 8.2.28

01h

02h

PLLL

03h

DAA

04h

AGC

05h

BAND

06h

LEVELALGN

IFCF

07h

08h

IFCAP

09h

ACD

0Ah

0Bh

0Ch

0Dh

0Eh

0Fh

SENSE

TIMING

SNC

HIGHCUT

SOFTMUTE

RADIO

INPUT

10h

11h

VOLUME

TREBLE

BASS

12h

13h

14h

FADER

OUTPUT

BALANCE

LOUDNESS

POWER

reserved

TEST

15h

16h

17h

18h

19h to 1Eh

1Fh

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

22 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

2

I C-BUS

MODE

SA = 00h to 05h

SA = 06h to 1Fh

BUFFER REGISTER

SA = 00h to 05h

LOAD

MODE DECODER

STATE MACHINE

PRESET,

SEARCH

AFU, JUMP,

CHECK

SWAP

PRELOAD

IF COUNTER

WS DETECTORS

WS PROCESSING

TUNING MUTE

CONTROL REGISTER

SA = 00h to 05h SA = 06h to 1Fh

TUNER AND AUDIO CIRCUIT

001aab522

Fig 8. I²C-bus and state machine control

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

23 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

MODE = buffer or end

SA = 2

address

MSA

byte 2

byte 3

new

byte 4

P

BUFFER

new

byte 0

byte 1

byte 2

byte 3

byte 4

byte 5

new

for MODE = end only

byte 0

byte 1

byte 2

byte 3

byte 4

byte 5

current

CONTROL

current

001aab523

Fig 9. Write without state machine action, no preload, no register swap

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

24 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

MODE = AFU, jump or check

SA = 2

address

MSA

byte 2

byte 3

byte 4

byte 5

P

byte 0

byte 1

byte 2

byte 3

byte 4

byte 5

current

BUFFER

new

state machine start

swap

new

byte 0

byte 1

byte 2

byte 3

byte 4

byte 5

CONTROL

current

new

001aab524

Fig 10. Write with state machine action and swap, no preload

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

25 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

MODE = preset or search

SA = 3

address

MSA

byte 3

byte 4

byte 5

P

current

BUFFER

byte 0

byte 1

byte 2

byte 3

byte 4

byte 5

current

new

current

new

state machine start

preload

swap

CONTROL

byte 0

byte 1

byte 2

byte 3

byte 4

byte 5

current

new

current

new

001aab525

Fig 11. Write with state machine action, preload and swap

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

26 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

MODE = load

SA = 3

address

MSA

byte 3

byte 4

byte 5

P

BUFFER

byte 0

byte 1

byte 2

byte 3

byte 4

byte 5

current

new

current

new

preload

swap

CONTROL

byte 0

byte 1

byte 2

byte 3

byte 4

byte 5

current

new

001aab526

Fig 12. Write without state machine action, with preload and swap

8.2.1 Mode and subaddress byte for write

Table 23. MSA - format of mode and subaddress byte

7

6

5

4

3

2

1

0

MODE2

MODE1

MODE0

SA4

SA3

SA2

SA1

SA0

Table 24. MSA - mode and subaddress byte bit description

Bit

Symbol

Description

7 to 5

4 to 0

MODE[2:0] mode tuning action; see Table 25

SA[4:0]

Subaddress; 0 0000 to 1 1111 = write data byte subaddress 00h to 1Fh.

The subaddress value is auto-incremented and will revert from

SA = 1Fh to SA = 00h. The auto-increment function cannot be disabled.

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

27 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 25. Tuning action modes

MODE2 MODE1 MODE0 Symbol

Description

0

buffer

write BUFFER register, no state machine action, no

register swap; see Figure 9

0

1

preset

tune to new program with 60 ms mute control; swap;

see Figure 13 and Figure 14; BUFFER is preloaded with

CONTROL register; immediate swap; see Figure 11

0

1

0

1

search

tune to new program and stay muted (to release use

end); swap; see Figure 15 and Figure 16; BUFFER is

preloaded with CONTROL register; see Figure 11

AF update tune to AF program; check AF quality and tune back to

main program; two register swap operations;

see Figure 10, Figure 17 and Figure 18

1

0

1

0

1

0

jump

check

load

tune to AF program in minimum time; register swap;

see Figure 10, Figure 19 and Figure 20

tune to AF program and stay muted (to release use end);

register swap; see Figure 10, Figure 21 and Figure 22

write CONTROL register via BUFFER; no state machine

action; BUFFER is preloaded with CONTROL register;

immediate swap; see Figure 12

1

end

end action; release mute; no register swap; see Figure 9

and Figure 23

Since buffer mode (bits MODE[2:0] = 000) does not change any tuner action or register

other then those deﬁned by the I²C-bus write transmission it generally is the mode used

for writing outside the buffered subaddress range (i.e. bits SA[4:0] = 06h to 1Fh). Writing

in the subaddress range of 06h to 1Fh is executed immediately and is not controlled by

the state machine. Load mode does not interrupt a state machine process, the preload

action changes the content of the BUFFER register which may interfere with a tuner

action in progress.

When a new state machine tuning action is started during a mute state of the state

machine, the new action skips the unnecessary activation of mute and starts immediately

with the actions that follow the mute period in the standard sequence. In this way fastest

timing is possible e.g. for search tuning (see Figure 14, Figure 16, Figure 20 and

Figure 22). When AF update mode is started during a mute state only the return tuning

action will be performed; in combination with check mode an AF update can be created

with the AF sampling time deﬁned by I²C-bus control (see Figure 18).

The FM IF2 signal path contains a digital controlled AGC function with a maximum AGC

decay time of 13 ms to realize sufﬁcient AM suppression during changing signal

conditions and high modulation situations. During the settling of the AGC (e.g. after a

tuning action), the gain of the FM path and the level detection can be affected. To get

correct signal quality information, a minimum time of 13 ms should be used between two

tuning actions.

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

28 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

2

I C-bus

P

1 ms

PLL

60 ms

1 ms

time

f1

f2

tuning

register SWAP

IF counter reset

quality detector reset

tuning mute

WS processing

FAST

'11'

'00'

TAS read

'00'

'10'

'01'

001aab527

Fig 13. Preset mode

2

P

I C-bus

1 ms

PLL

60 ms

time

tuning

f1

f2

register SWAP

IF counter reset

quality detector reset

tuning mute

FAST

HOLD

FAST

WS processing

TAS read

'11'

'10'

'00'

001aab528

Fig 14. Preset mode, started during mute

TEF6901A_3

Product data sheet

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29 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

2

I C-bus

P

1 ms

PLL

time

tuning

f1

f2

register SWAP

IF counter reset

quality detector reset

tuning mute

WS processing

TAS read

FAST

'11'

'10'

'01'

'00'

001aab529

Fig 15. Search mode

2

I C-bus

P

PLL

time

tuning

f1

f2

register SWAP

IF counter reset

quality detector reset

tuning mute

FAST

HOLD

FAST

WS processing

TAS read

'11'

'10'

001aab530

Fig 16. Search mode, started during mute

TEF6901A_3

Product data sheet

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30 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

2

I C-bus

P

0.5 ms

1 ms

PLL

2 ms

1 ms

time

tuning

f1

f2

f1

register SWAP

IF counter reset

quality detector reset

2

IF counter hold

counter and detector result HOLD until I C-bus read

quality detector hold

tuning mute

HOLD

WS processing

'11'

TAS read

'00'

'10'

'01'

'00'

001aab531

Fig 17. AF update mode

2

I C-bus

P

0.5 ms

PLL

1 ms

time

tuning

f2

f1

register SWAP

IF counter reset

quality detector reset

2

IF counter hold

counter and detector result HOLD until I C-bus read

quality detector hold

tuning mute

HOLD

WS processing

FAST

'11'

TAS read

'10'

'00'

001aab532

Fig 18. AF update mode, started during mute

TEF6901A_3

Product data sheet

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TEF6901A

NXP Semiconductors

Integrated car radio

2

I C-bus

P

0.5 ms

1 ms

PLL

time

tuning

f1

f2

register SWAP

IF counter reset

quality detector reset

tuning mute

WS processing

HOLD

'11'

'10'

'01'

TAS read

'00'

001aab533

Fig 19. Jump mode

2

I C-bus

P

0.5 ms

PLL

1 ms

time

tuning

f1

f2

register SWAP

IF counter reset

quality detector reset

tuning mute

HOLD

WS processing

FAST

HOLD

'11'

TAS read

'10'

'00'

001aab534

Fig 20. Jump mode, started during mute

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

32 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

2

I C-bus

P

1 ms

PLL

time

tuning

f1

f2

register SWAP

IF counter reset

quality detector reset

tuning mute

WS processing

HOLD

'11'

'10'

TAS read

'00'

'01'

001aab535

Fig 21. Check mode

2

I C-bus

P

PLL

time

tuning

f1

f2

register SWAP

IF counter reset

quality detector reset

tuning mute

HOLD

FAST

HOLD

'10'

WS processing

TAS read

'11'

001aab536

Fig 22. Check mode, started during mute

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

33 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

2

P

I C-bus

1 ms

time

tuning mute

WS processing

TAS read

HOLD

FAST

'11'

'00'

001aab537

Fig 23. End mode

8.2.2 Write mode: data byte BANDWIDTH

Table 26. BANDWIDTH - format of data byte 00h with default setting (buffered)

7

DYN

1

6

BW4

1

5

BW3

1

4

BW2

1

3

BW1

1

2

BW0

1

TE1

1

0

TE0

0

Table 27. BANDWIDTH - data byte 00h bit description

Bit

Symbol

Description

7

DYN

dynamic bandwidth; see Table 28

0 = FM IF bandwidth set by BW

1 = FM IF bandwidth dynamically controlled

FM IF bandwidth; see Table 28

DYN = 0

6 to 2

BW[4:0]

00h to 1Fh = FM ﬁxed IF bandwidth 57 kHz to 165 kHz

DYN = 1

00h to 0Fh = minimum dynamic bandwidth 57 kHz to 109 kHz

10h to 1Fh = maximum dynamic bandwidth 113 kHz to 165 kHz

threshold extension

1 and 0

TE[1:0]

00 = no threshold extension

01 = threshold extension low

10 = threshold extension standard

11 = threshold extension high

TEF6901A_3

Product data sheet

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TEF6901A

NXP Semiconductors

Integrated car radio

Table 28. FM IF bandwidth selection

BW4

0

1

BW3

0

1

0

1

BW2

0

1

0

1

0

1

0

1

BW1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

BW0

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

DYN = 0

57 kHz

DYN = 1

57 kHz to 165 kHz

60 kHz to 165 kHz

64 kHz to 165 kHz

67 kHz to 165 kHz

71 kHz to 165 kHz

74 kHz to 165 kHz

78 kHz to 165 kHz

81 kHz to 165 kHz

85 kHz to 165 kHz

88 kHz to 165 kHz

92 kHz to 165 kHz

95 kHz to 165 kHz

99 kHz to 165 kHz

102 kHz to 165 kHz

106 kHz to 165 kHz

109 kHz to 165 kHz

57 kHz to 113 kHz

57 kHz to 116 kHz

57 kHz to 120 kHz

57 kHz to 123 kHz

57 kHz to 127 kHz

57 kHz to 130 kHz

57 kHz to 134 kHz

57 kHz to 137 kHz

57 kHz to 141 kHz

57 kHz to 144 kHz

57 kHz to 148 kHz

57 kHz to 151 kHz

57 kHz to 155 kHz

57 kHz to 158 kHz

57 kHz to 162 kHz

57 kHz to 165 kHz

60 kHz

64 kHz

67 kHz

71 kHz

74 kHz

78 kHz

81 kHz

85 kHz

88 kHz

92 kHz

95 kHz

99 kHz

102 kHz

106 kHz

109 kHz

113 kHz

116 kHz

120 kHz

123 kHz

127 kHz

130 kHz

134 kHz

137 kHz

141 kHz

144 kHz

148 kHz

151 kHz

155 kHz

158 kHz

162 kHz

165 kHz

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

35 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

8.2.3 Write mode: data bytes PLLM and PLLL

Table 29. PLLM - format of data byte 01h with default setting (buffered)

7

RFGAIN

0

6

PLL14

0

5

PLL13

0

4

PLL12

0

3

PLL11

1

2

PLL10

0

1

PLL9

0

PLL8

0

Table 30. PLLL - format of data byte 02h with default setting (buffered)

7

PLL7

0

6

PLL6

1

5

PLL5

1

4

PLL4

1

3

PLL3

1

2

PLL2

1

PLL1

1

0

PLL0

0

Table 31. PLLM and PLLL - data byte 01h and data byte 02h bit description

Bit

Symbol

Description

7 (PLLM) RFGAIN

RF gain setting in FM mode

0 = standard RF gain

1 = +6 dB additional RF gain at FM mixer 1

6 to 0

(PLLM)

7 to 0

PLL[14:0] VCO programmable divider N; application range of N = 1024 to 32767;

see Section 8.2.7

(PLLL)

8.2.4 Write mode: data byte DAA

Table 32. DAA - format of data byte 03h with default setting (buffered)

7

6

DAA6

1

5

DAA5

0

4

DAA4

0

3

DAA3

0

2

DAA2

0

1

DAA1

0

DAA0

0

Table 33. DAA - data byte 03h bit description

Bit

7

Symbol

-

Description

reserved; 0 = normal operation

RF selectivity alignment

6 to 0

DAA[6:0]

FM: alignment of antenna circuit tuning voltage

(0.1 × V_VCOto 2.0 × V_VCO

)

AM: voltage Digital-to-Analog Converter (DAC) output

(0.1 × 4.3 V to 2.0 × 4.3 V)

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

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TEF6901A

NXP Semiconductors

Integrated car radio

8.2.5 Write mode: data byte AGC

Table 34. AGC - format of data byte 04h with default setting (buffered)

7

AGCSW

0

6

IFGAIN

0

5

4

3

AGC1

0

2

AGC0

0

1

KAGC

0

LODX

0

Table 35. AGC - data byte 04h bit description

Bit

Symbol

Description

7

AGCSW

RF AGC switch

0 = no control of unused RF AGC

1 = unused AM RF AGC PIN diode at FM mode, or unused FM RF

AGC PIN diode at AM mode is supplied with a constant current for ﬁxed

attenuation

6

IFGAIN

-

IF gain

0 = IF gain for low loss 10.7 MHz ﬁlter

1 = increased IF gain (3 dB) for high loss 10.7 MHz ﬁlter

reserved; 0 = normal operation

5 and 4

3 and 2

AGC[1:0] setting of RF AGC threshold voltage

FM mixer 1 input voltage (RMS value)

00 = 24 mV

01 = 17 mV

10 = 12 mV

11 = 9 mV

AM mixer 1 input voltage (peak-to-peak value)

00 = 1000 mV

01 = 700 mV

10 = 500 mV

11 = 350 mV

1

KAGC

keyed AGC

FM mode

0 = keyed AGC off

1 = keyed AGC on; the AGC start level is shifted to a value 10 dB above

the standard AGC start level, when the level voltage of the wanted RF

signal is below the threshold level voltage for narrow-band AGC

AM mode

0 = RF cascode AGC enabled with full range

1 = RF cascode AGC enabled with limited range

FM: local switch

0

LODX

0 = standard operation (DX)

1 = forced FM RF AGC attenuation (LOCAL)

AM: trigger signal from AM IF noise blanker to AM audio noise blanker

0 = trigger signal active for low modulation (m < 0.05) only

1 = trigger signal always active, independent of modulation

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

37 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

8.2.6 Write mode: data byte BAND

Table 36. BAND - format of data byte 05h with default setting (buffered)

7

BAND2

0

6

BAND1

0

5

BAND0

1

4

FREF2

0

3

FREF1

0

2

FREF0

0

1

LOINJ

0

Table 37. BAND - data byte 05h bit description

Bit

Symbol

Description

7 to 5

4 to 2

1

BAND[2:0] FM and AM band selection; see Table 38

FREF[2:0] PLL reference frequency; see Table 39

LOINJ

FM mixer 1 image suppression

0 = high injection image suppression

1 = low injection image suppression

reserved; 0 = normal operation

0

-

Table 38. Decoding of BAND bits

BAND2

BAND1

BAND0

Divider ratio M

Receiver band

0

1

0

1

0

1

0

1

0

1

0

1

0

1

-

reserved

FM

2

3

FM

6

AM

8

AM

10

16

20

AM

Table 39. Reference frequencies

FREF2

FREF1

FREF0

f_ref

0

1

0

1

0

1

0

1

0

1

0

1

0

1

100 kHz

50 kHz

25 kHz

20 kHz

10 kHz

reserved

Different PLL charge pump currents are used for different reference frequencies to

maintain best PLL loop stability; see Table 40.

Settings FREF[2:0] = 000 (100 kHz) and FREF[2:0] = 001 (50 kHz) include additional high

current charge pump control to realize fast PLL locking within 1 ms.

TEF6901A_3

Product data sheet

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TEF6901A

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Integrated car radio

Table 40. Charge pump source^[1]

FREF2

FREF1

FREF0

LOINJ

Charge pump f_ref

current

0

1

0

1

0

1

0

1

0

1

0

1

0

1

X

1

CP1

100 kHz

50 kHz

25 kHz

20 kHz

10 kHz

CP2

CP3

0

CP4

X

CP5

reserved

[1] X = don’t care.

8.2.7 Tuning overview

High injection LO (Europe FM, US FM and AM):

(f_RF+ 10.7 MHz) × M

N =

with LOINJ = 0 to achieve full image suppression in FM.

-----------------------------------------------------

f_ref

Low injection LO (Japan FM and OIRT):

(f_RF– 10.7 MHz) × M

N =

with LOINJ = 1 to achieve full image suppression in FM.

----------------------------------------------------

f_ref

tuning step =

------

M

where: M is the divider ratio of the VCO frequency for AM mixer 1 and FM mixer 1

f_VCO

M =

.

--------------

f_{mixer 1}

Table 41. Standard tuner settings

Broadcast band BAND[2:0]

Europe FM and US FM 001

M

2

FREF[2:0]

000

f_ref

LOINJ Tuning step

100 kHz

20 kHz

0

1

50 kHz

Japan FM

010

3

000

33.3 kHz

6.67 kHz

Eastern Europe FM

(OIRT FM)

3

011

AM MW and LW

111

20

16

10

8

011

100

20 kHz

10 kHz

0

1 kHz

AM SW 120 m to 60 m 110

0.625 kHz

1 kHz

AM SW 49 m to 22 m

AM SW 25 m to 15 m

AM SW 16 m to 11 m

101

100

011

1.25 kHz

1.67 kHz

6

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

39 of 107

TEF6901A

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Integrated car radio

8.2.8 Write mode: data byte LEVELALGN

Table 42. LEVELALGN - format of data byte 06h with default setting

7

LST4

1

6

LST3

0

5

LST2

0

4

LST1

0

3

LST0

0

2

LSL2

1

LSL1

0

LSL0

0

Table 43. LEVELALGN - data byte 06h bit description

Bit

Symbol

LST[4:0]

LSL[2:0]

Description

7 to 3

2 to 0

level start voltage alignment

level slope alignment

For I²C-bus reading of the level voltage and standard alignment see read data byte 1

(see Table 10).

Level alignment should begin with slope alignment (LSL): the level slope does not change

with level start alignment (LST) or broadcast band; therefore a single LSL alignment

setting can be used for all FM and AM band selections.

Level start may change between broadcast bands; therefore generally a separate LST

alignment and setting is used for every broadcast band.

8.2.9 Write mode: data byte IFCF

Table 44. IFCF - format of data byte 07h with default setting

7

IFCFA

0

6

IFNBW

0

5

IFCF5

1

4

IFCF4

0

3

IFCF3

0

2

IFCF2

0

1

IFCF1

0

IFCF0

0

Table 45. IFCF - data byte 07 bit description

Bit

Symbol

Description

7

IFCFA

FM IF ﬁlter align mode

0 = normal operation

1 = align mode (fast frequency settling)

FM IF ﬁlter narrow

6

IFNBW

0 = normal operation

1 = FM IF ﬁlter at minimum bandwidth (57 kHz)

5 to 0

IFCF[5:0] FM IF ﬁlter center frequency alignment

8.2.10 Write mode: data byte IFCAP

Table 46. IFCAP - format of data byte 08h with default setting

7

IFCAPA

0

6

5

4

3

IFCAP3

1

2

IFCAP2

0

1

IFCAP1

0

IFCAP0

0

TEF6901A_3

Product data sheet

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TEF6901A

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Table 47. IFCAP - data byte 08h bit description

Bit

Symbol

Description

7

IFCAPA

FM IF ﬁlter capacitor align

0 = standard operation

1 = align mode and initialization mode (auto correct disabled)

reserved; 0 = normal operation

6 to 4

3 to 0

-

IFCAP[3:0]

IF ﬁlter capacitor. Setting of FM IF ﬁlter capacitor value by means of

bit IFCAPG of read data byte 5, ID; see Table 19 (For initialization set

IFCAPA = 1. For alignment set IFCAPA = 1 and check, when read bit

IFCAPG changes from logic 0 to logic 1).

The fully integrated IF2 ﬁlter of the TEF6901A has to be aligned in order to achieve the

optimum performance at all ambient conditions.

8.2.10.1 Factory alignment of bits IFCAP[3:0]

FM IF ﬁlter operation point alignment: data byte IFCAP: a single alignment of the FM IF

ﬁlter operation range secures an accurate and continuous frequency setting over the full

temperature range and all FM bands.

1. Set bit IFCAPA to logic 1 to disable internal IFCAP control

2. Decrease IFCAP from 15 downwards until I²C-bus read bit IFCAPG (read byte 5; ID)

changes from logic 1 to logic 0

3. Save this IFCAP setting as alignment value

4. Set bit IFCAPA to logic 0 to return to normal operation

8.2.10.2 Initialization of the radio

During radio initialization bit IFCAPA (is logic 1) is used for writing the stored IFCAP[3:0]

value. Afterwards set bit IFCAPA to a logic 0 to start normal operation. Writing of the

IFCAP byte with the alignment value is allowed during radio operation but requires a

setting of bit IFCAPA to logic 0.

8.2.10.3 Factory alignment of IFCF

FM IF ﬁlter center frequency alignment: data byte IFCF: to correct IF frequency errors

caused by an error in the crystal frequency the alignment is preferably performed for every

FM band in use. A test frequency in the center of the band is preferred. An accurate

alignment result is realized by testing for symmetrical ﬁlter attenuation.

1. Set RF generator level V_RF= 200 µV

2. Set bit IFCFA to logic 1 to enable fast settling of the ﬁlter frequency

3. Set bit IFNBW to logic 1 for accuracy (ﬁlter is set to narrow 57 kHz bandwidth)

4. Test high side of ﬁlter curve: tune to f_RF− 50 kHz (Europe/USA) or f_RF+ 33.3 kHz

(Japan/OIRT)

5. Change IFCF from 0 to 63 and note the level read result (level voltages)

6. Test low side of ﬁlter curve: tune to f_RF+ 50 kHz (Europe/USA) or f_RF− 33.3 kHz

(Japan/OIRT)

7. Change IFCF from 0 to 63 and note the level voltages

8. Find the IFCF value where both level curves cross (lowest difference) and save this

IFCF value

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

41 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

9. Set bits IFCFA and IFNBW to logic 0 to return to normal operation

The bits IFCFA and IFNBW are intended for factory alignment use only. Normal radio

operation requires a setting of bits IFCFA and IFNBW to logic 0.

8.2.11 Write mode: data byte ACD

Table 48. ACD - format of data byte 09h with default setting

7

6

5

4

3

2

1

0

ACDLEV ACDLAP1 ACDLAP0 ACDBAL1 ACDBAL0 ACDWAM1 ACDWAM0 HCSFH

0

1

0

1

0

1

0

Table 49. ACD - data byte 09h bit description

Bit

Symbol

Description

7

ACDLEV

level threshold; start level of threshold extension and latch protection

0 = start at LEV = 40 (V_LEVEL= 0.88 V), normal operation

1 = start at LEV = 48 (V_LEVEL= 1 V)

6 and 5

ACDLAP[1:0] latch protection limit; protect against narrow bandwidth locking at high

modulation, low RF signal condition

00 = no protection

01 = low protection

10 = standard protection

11 = high protection

4 and 3

ACDBAL[1:0] control balance; bandwidth control priority towards adjacent channel

(prevent breakthrough) or towards modulation (low distortion)

00 = high adjacent channel priority

01 = medium adjacent channel priority, standard operation

10 = medium modulation priority

11 = high modulation priority

2 and 1

ACDWAM[1:0] WAM threshold; desensitize bandwidth control at detection of WAM

00 = no desensitization on WAM

01 = low sensitivity

10 = medium sensitivity

11 = high sensitivity

0

HCSFH

HCC minimum bandwidth; combined control with bit HCSF;

see Table 57, Table 60 and Figure 26

0 = minimum bandwidth of high cut control is 2.2 kHz or 3.3 kHz

1 = minimum bandwidth of high cut control is 3.9 kHz or 5.6 kHz

8.2.12 Write mode: data byte SENSE

Table 50. SENSE - format of data byte 0Ah with default setting

7

CSA3

1

6

CSA2

0

5

CSA1

0

4

CSA0

0

3

USS1

0

2

USS0

1

WAS1

0

WAS0

1

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

42 of 107

TEF6901A

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Integrated car radio

Table 51. SENSE - data byte 0Ah bit description

Bit

Symbol

Description

7 to 4

3 and 2

CSA[3:0] alignment of FM stereo channel separation

USS[1:0] USN sensitivity; USN weak signal control equivalent level

voltage/frequency deviation for weak signal processing; see Figure 24

00 = −0.06 V/kHz

01 = −0.08 V/kHz

10 = −0.12 V/kHz

11 = −0.16 V/kHz

1 and 0

WAS[1:0] WAM sensitivity; WAM weak signal control equivalent level

voltage/V_LEVEL(peak-to-peak) for weak signal processing; see Figure 24

00 = −7.5

01 = −10

10 = −15

11 = −20

The input control value for weak signal control derived from USN is denoted by V_eq.LEVEL

equivalent level voltage. This indicates a weak signal control amount equal to the weak

signal control generated by a certain V_LEVELvoltage.

;

The USS setting does not inﬂuence the I²C-bus read quality information of USN; read

data byte 2, USN/WAM; see Table 12.

The input control value for weak signal control derived from WAM is denoted by V_eq.LEVEL

equivalent level voltage. This indicates a weak signal control amount equal to the weak

signal control generated by a certain V_LEVELvoltage.

;

The WAS setting does not inﬂuence the I²C-bus read quality information of WAM; read

data byte 2, USN/WAM; see Table 12.

001aab831

001aab538

4

V

eq. LEVEL

(V)

eq. LEVEL

(V)

3

2

1

0

3

2

1

0

[

]

[

]

USS 1:0

WAS 1:0

11

10

01

00

11

10

01

00

0

25

50

75

15

0

0.2

0.4

0.6

2

I C-bus:

WAM =

V

(V)

∆f (kHz)

LEVEL

USN =

15

a. MPX signal.

b. Level variation.

Fig 24. Weak signal control sensitivity versus MPX signal at 150 kHz (USN) and level variation at 21 kHz (WAM)

TEF6901A_3

Product data sheet

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43 of 107

TEF6901A

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Integrated car radio

8.2.13 Write mode: data byte TIMING

Table 52. TIMING - format of data byte 0Bh with default setting

7

STC1

1

6

STC0

0

5

HTC2

1

4

HTC1

0

3

HTC0

0

2

MTC2

1

MTC1

1

0

MTC0

0

Table 53. TIMING - data byte 0Bh bit description^[1]

Bit

Symbol

Description

setting of the stereo noise control time constants; see Table 54

7 and 6

5 to 3

2 to 0

STC[1:0]

HTC[2:0] setting of the high cut control time constants; see Table 55

MTC[2:0] setting of the soft mute control time constants; see Table 56

[1] During the tuning mute of the preset and search mode tuning action the time constants set by STC, HTC

and MTC change to t_attack= 50 ms and t_recovery= 50 ms to enable fast settling of the weak signal processing

to new conditions.

Table 54. SNC weak signal processing control speed setting

STC1

STC0

t_attack

0.1 s

t_recovery

1.25 s

2.5 s

5 s

0

1

0

1

0

1

10 s

Table 55. HCC speed setting^[1]

HTC2

HTC1

HTC0

t_attack

0.03 s

0.06 s

0.25 s

0.5 s

1 s

t_recovery

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0.04 s

0.08 s

0.3 s

0.6 s

1.25 s

2.5 s

1 s

[1] When for an external audio source VU-meter mode is enabled (bits AVUM or COMP are logic 1) the HTC

setting controls the t_recoveryVU-meter timing, t_attackhas a ﬁxed value of 20 ms; see Table 99.

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

44 of 107

TEF6901A

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Integrated car radio

Table 56. Soft mute weak signal processing control speed setting^[1]

[2]

[3]

MTC2

MTC1

MTC0

t_attack

t_recovery

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0.01 s

0.03 s

0.1 s

0.2 s

0.4 s

0.01 s

0.03 s

0.1 s

0.2 s

0.4 s

0.8 s

[1] When for an external audio source dynamic compression is enabled (bit COMP is logic 1) the MTC setting

controls the t_recoverycompression timing, t_attackhas a ﬁxed value of 20 ms; see Table 80.

[2] The attack time is the time, which the weak signal processing needs to realize a full control change for a

level voltage change between HIGH level (where the weak signal processing is inactive) and 0.75 V level

voltage.

[3] The recovery time is the time needed for the full control change when the level voltage rises from 0.75 V to

HIGH level.

8.2.14 Write mode: data byte SNC

Table 57. SNC - format of data byte 0Ch with default setting

7

SST3

0

6

SST2

1

5

SST1

1

4

SST0

1

3

SSL1

0

2

SSL0

1

HCMP

0

HCSF

0

Table 58. SNC - data byte 0Ch bit description

Bit

Symbol

Description

7 to 4

SST[3:0]

SNC start; start setting of the stereo noise control; see Table 59 and

Figure 25

3 and 2

SSL[1:0]

SNC slope; slope setting of the stereo noise control (α_sep/ V_eq.LEVEL);

see Figure 25

00 = 38 dB/V

01 = 51 dB/V

10 = 63 dB/V

11 = 72 dB/V

1

0

HCMP

HCSF

HCC control source

0 = high cut control is only controlled by the level information

1 = high cut control is controlled by level, USN and WAM

HCC minimum bandwidth; combined control with bit HCSFH;

see Table 49, Table 60 and Figure 26

TEF6901A_3

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TEF6901A

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Table 59. Start of stereo noise control weak signal processing

SST3

SST2

SST1

SST0

Stereo noise control start (V_eq.LEVEL)

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

1.88 V

1.94 V

2.00 V

2.06 V

2.13 V

2.19 V

2.25 V

2.31 V

2.38 V

2.44 V

2.5 V

2.56 V

2.63 V

2.69 V

2.75 V

2.81 V

Table 60. HCC minimum bandwidth

HCSFH

HCSF

High cut control minimum bandwidth

0

1

0

1

0

1

2.2 kHz

3.3 kHz

3.9 kHz

5.6 kHz

TEF6901A_3

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TEF6901A

NXP Semiconductors

Integrated car radio

001aab493

001aab539

40

α

cs

(dB)

30

20

10

0

20

10

0

SST[3:0]

SSL[1:0]

0000

0111 1000

1111

00 01

1.5

10

11

0.5

1

1.5

2

2.5

3

(V)

0.5

1

2

2.5

eq. LEVEL

3

(V)

V

eq. LEVEL

SSL = 63 dB/V.

SST = 2.5 V.

a. Start.

b. Slope.

Fig 25. SNC start and slope settings versus equivalent level voltage; SNC detector (level, USN and WAM), USN

detector and WAM detector

8.2.15 Write mode: data byte HIGHCUT

Table 61. HIGHCUT - format of data byte 0Dh with default setting

7

HST2

0

6

HST1

1

5

HST0

1

4

HSL1

0

3

HSL0

1

2

HCF2

1

HCF1

1

0

HCF0

1

Table 62. HIGHCUT - data byte 0Dh bit description

Bit

Symbol

HST[2:0]

HSL[1:0]

Description

7 to 5

4 and 3

HCC start; start setting of the high cut control; see Table 63 and Figure 26

HCC slope; slope setting of the high cut control (α_{10 kHz}/ V_eq.LEVEL); see Figure 26

00 = 9 dB/V

01 = 11 dB/V

10 = 14 dB/V

11 = 18 dB/V

2 to 0

HCF[2:0]

HCC maximum bandwidth; setting of the ﬁxed high cut control; see Table 64, Figure 26 and

Figure 27

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Table 63. Start of high cut control weak signal processing

HST2

HST1

HST0

High cut control start (V_eq.LEVEL)

0

1

0

1

0

1

0

1

0

1

0

1

0

1

1.5 V

1.75 V

2.0 V

2.25 V

2.5 V

3.0 V

3.5 V

4.0 V

Table 64. Fixed high cut settings

HCF2

HCF1

HCF0

Fixed high cut; HCC B_max

reserved

0

1

0

1

0

1

0

1

0

1

0

1

0

1

2 kHz

3 kHz

5 kHz

7 kHz

10 kHz

wide bandwidth

full bandwidth

TEF6901A_3

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Integrated car radio

001aab597

0

full bandwidth

0

HST[2:0]

α

10 kHz

(dB)

10 kHz

(dB)

wide bandwidth

3

6

10

B

(kHz)

7

3

6

000

001

010

011

(1)

5

3

(2)

(3)

9

100

101

110

111

01

HSL[1:0] 00

10 11

12

15

12

15

(4)

2

0.5

1.5

2.5

0.5

1.5

2.5

3.5

V

(V)

001aad655

eq.LEVEL

V

(V)

eq.LEVEL

HCF = 111, HCSF = 0, HCSFH = 0, HSL = 10.

HST = 100.

(1) HCSFH = 1; HCSF = 1; B_min= 5.6 kHz.

(2) HCSFH = 1; HCSF = 0; B_min= 3.9 kHz.

(3) HCSFH = 0; HCSF = 1; B_min= 3.3 kHz.

(4) HCSFH = 0; HCSF = 0; B_min= 2.2 kHz.

a. Start.

b. Slope and minimum bandwidth.

Fig 26. High cut control start and slope settings versus equivalent level voltage; HCC detector (HCMP = 0 for level

or HCMP = 1 for level, WAM and USN)

001aab542

8

gain

(dB)

HCF[2:0]

111

110

0

101

100

−8

011

−16

−24

010

001

−2

−1

2

10

1

10

f (kHz)

Fig 27. Fixed high cut setting characteristics

TEF6901A_3

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Integrated car radio

8.2.16 Write mode: data byte SOFTMUTE

Table 65. SOFTMUTE - format of data byte 0Eh with default setting

7

MST2

0

6

MST1

1

5

MST0

1

4

MSL1

0

3

MSL0

1

2

UMD1

0

1

UMD0

1

0

MSLE

0

Table 66. SOFTMUTE - data byte 0Eh bit description

Bit

Symbol

Description

7 to 5

MST[2:0] soft mute start; start setting of the soft mute; for FM see Table 67 and

Figure 28; for AM see Table 68 and Figure 29

4 and 3

2 and 1

MSL[1:0] soft mute slope^[1]; slope setting of the soft mute (α_{10 kHz}/ V_eq.LEVEL); for

FM see Table 69 and Figure 28; for AM see Table 70 and Figure 29

UMD[1:0] USN soft mute depth; setting of the maximum attenuation of the USN fast

soft mute control; see Figure 30

00 = 3 dB

01 = 6 dB

10 = 9 dB

11 = 12 dB

0

MSLE

soft mute slope extension; additional slope setting of the soft mute; for

FM see Table 69 and Figure 28; for AM see Table 70 and Figure 29

[1] When for an external audio source dynamic compression is enabled (bit COMP is logic 1) the MSL setting

controls the compression ratio. For default 2 : 1 compression MSL = 01 is used; see Table 82.

Table 67. Start of soft mute control weak signal processing; FM mode^[1]

MST2

MST1

MST0

Soft mute control start (V_eq.LEVEL)

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0.88 V

1.0 V

1.12 V

1.25 V

1.38 V

0.75 V

0.81 V

0.94 V

[1] When for an external audio source dynamic compression is enabled (COMP = 1) the MST setting controls

the compression range. For default full compression MST = 7 is used; see Table 81.

TEF6901A_3

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Integrated car radio

Table 68. Start of soft mute control weak signal processing; AM mode^[1]

MST2

MST1

MST0

Soft mute control start (V_eq.LEVEL)

0

1

0

1

0

1

0

1

0

1

0

1

0

1

1.5 V

1.75 V

2.0 V

1.25 V

1.38 V

1.62 V

1.88 V

2.12 V

[1] When for an external audio source dynamic compression is enabled (COMP = 1) the MST setting controls

the compression range. For default full compression MST = 7 is used; see Table 81.

Table 69. Slope of soft mute control weak signal processing; FM mode^[1]

MSLE

MSL1

MSL0

Soft mute control slope (α_AF/ V_eq.LEVEL)

0

1

0

1

0

1

0

1

0

1

0

1

0

1

8 dB/V

16 dB/V

24 dB/V

32 dB/V

40 dB/V

48 dB/V

reserved

[1] When for an external audio source dynamic compression is enabled (COMP = 1) the MSL setting controls

the compression range. For default 2 : 1 compression MSL = 1 is used; see Table 82.

Table 70. Slope of soft mute control weak signal processing; AM mode^[1]

MSL1

MSL0

MSLE

Soft mute control slope (α_AF/ V_eq.LEVEL)

0

1

0

1

0

1

0

1

0

1

0

1

0

1

8 dB/V

12 dB/V

16 dB/V

20 dB/V

24 dB/V

28 dB/V

32 dB/V

36 dB/V

[1] When for an external audio source dynamic compression is enabled (COMP = 1) the MSL setting controls

the compression range. For default 2 : 1 compression MSL = 1 is used; see Table 82.

TEF6901A_3

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Integrated car radio

001aad656

001aad658

0

(0)

(1)

(2)

(3)

α

(dB)

α

mute

(dB)

mute

MST[2:0]

12

6

101

110

000

111

001

010

011

100

24

36

48

12

18

24

(0E)

(1E)

0.5

1.0

1.5

2.0

2.5

(V)

0.5

0.75

1.0

1.25

eq.LEVEL

1.5

(V)

V

eq.LEVEL

MSL[1:0] = 11.

MST[2:0] = 000.

(0) MSLE = 0; MSL[1:0] = 00.

(1) MSLE = 0; MSL[1:0] = 01.

(2) MSLE = 0; MSL[1:0] = 10.

(3) MSLE = 0; MSL[1:0] = 11.

(0E) MSLE = 1; MSL[1:0] = 00.

(1E) MSLE = 1; MSL[1:0] = 01.

a. Start.

b. Slope.

Fig 28. Soft mute start and slope settings versus equivalent level voltage (FM mode)

TEF6901A_3

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Integrated car radio

001aad657

001aad659

0

α

mute

(dB)

(0)

MST[2:0]

12

6

(0E)

(1)

011

24

36

48

12

18

24

100

000

101

001

110

010

111

(1E)

(2)

(2E)

(3)

(3E)

0.75

0.5

1.0

1.5

2.0

2.5

(V)

0.5

1.0

1.25

eq.LEVEL

1.5

(V)

V

eq.LEVEL

MSL[1:0] = 11.

MST[2:0] = 011.

(0) MSL[1:0] = 00; MSLE = 0.

(0E) MSL[1:0] = 00; MSLE = 1.

(1) MSL[1:0] = 01; MSLE = 0.

(1E) MSL[1:0] = 01; MSLE = 1.

(2) MSL[1:0] = 10; MSLE = 0.

(2E) MSL[1:0] = 10; MSLE = 1.

(3) MSL[1:0] = 11; MSLE = 0.

(3E) MSL[1:0] = 11; MSLE = 1.

a. Start.

b. Slope.

Fig 29. Soft mute start and slope settings versus equivalent level voltage (AM mode)

001aab544

0

00

01

10

α

(dB)

mute

6

11

12

UMD[1:0]

18

0.5

0.75

1

1.25

1.5

(V)

V

eq.LEVEL

MST[2:0] = 011, MSL[1:0] = 10.

Fig 30. USN soft mute depth settings; USN detector

TEF6901A_3

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TEF6901A

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Integrated car radio

8.2.17 Write mode: data byte RADIO

Table 71. RADIO - format of data byte 0Fh with default setting

7

6

MONO

0

5

DEMP

0

4

RDCL

1

3

NBS1

1

2

NBS0

0

1

NBL1

1

0

NBL0

0

Table 72. RADIO - data byte 0Fh bit description

Bit

7

Symbol

-

Description

reserved; 0 = normal operation

6

MONO

FM forced mono; stereo decoder disable option

0 = stereo decoder is set to FM stereo

1 = stereo decoder is set to FM mono

5

4

DEMP

RDCL

de-emphasis; selection of the de-emphasis time constant; see Figure 31

0 = de-emphasis is 75 µs

1 = de-emphasis is 50 µs

RDS output mode

0 = direct output mode; clock output and data output; see Figure 32

1 = buffered output mode; clock input and data output of 16-bit data

buffer and optional 3-bit demodulation quality (RDQ counter); see

Figure 33

3 and 2

NBS[1:0] noise blanker audio sensitivity

FM audio noise blanker sensitivity setting of FM MPX ignition noise

detector (peak value)

00 = 65 mV (high sensitivity)

01 = 100 mV

10 = 125 mV

11 = 160 mV (low sensitivity)

AM audio noise blanker sensitivity setting of audio ignition noise detector

00 = 16.5 V/ms

01 = 18.6 V/ms

10 = 21 V/ms

11 = 23.5 V/ms

1 and 0

NBL[1:0]

noise blanker IF or level sensitivity

FM audio noise blanker sensitivity setting of FM level ignition noise

detector (peak value)

00 = 10 mV

01 = 25 mV

10 = 36 mV

11 = 50 mV

AM IF noise blanker sensitivity setting of IF ignition noise detector

00 = 1.4 V (low sensitivity)

01 = 1 V

10 = 0.7 V (high sensitivity)

11 = AM IF noise blanker disabled

TEF6901A_3

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TEF6901A

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Integrated car radio

001aab545

8

0

gain

(dB)

DEMP

−8

−16

−24

1

0

−2

−1

2

10

1

10

f (kHz)

Fig 31. De-emphasis setting characteristics

RDDA output

RDCL output

bit slip

4 µs

> 400 µs

(as may occur at

poor reception)

4 µs

> 400 µs

001aab546

This mode is compatible with e.g. SAA6579, SAA6581, SAA770xH and TEF6890H.

Fig 32. RDS demodulator direct output mode (RDCL = 0); RDCL clock is output

TEF6901A_3

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TEF6901A

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data

available

RDDA output

D15

D14

D13

D1

D0

RDCL input

001aab547

1

2

3

15

16

a. The controlling microprocessor generates 16 clock pulses for output of 16 bits of buffered

RDS data. This mode use is compatible with e.g. SAA770xH and TEF6890H.

data

D15

D1

D0

Q2

Q1

Q0

available

RDDA output

RDCL input

1

15

16

17

18

19

20

001aab548

b. The controlling microprocessor generates 20 clock pulses for output of 16 bits of buffered

RDS data, a separator bit (logic 1) and 3 bits of RDQ bit quality counter information.

RDQ: 111 = good reception, 000 = poor or no reception. RDQ counter decrements on

each bad quality data bit.

Fig 33. RDS demodulator buffered output mode (RDCL = 1); RDCL clock is input

8.2.18 Write mode: data byte INPUT

Table 73. INPUT - format of data byte 10h with default setting

7

INP3

0

6

INP2

0

5

INP1

0

4

INP0

0

3

ING3

1

2

ING2

0

1

ING1

1

0

ING0

0

Table 74. INPUT - data byte 10h bit description

Bit

Symbol

Description

7 to 4

INP[3:0]

input selection; selection of the audio source for the tone/volume part;

see Table 75

3 to 0

ING[3:0]

Input gain; −10 dB to +18 dB input gain. The ING input gain setting is

added to the VOL volume setting to deﬁne the actual volume control;

see Table 76.

TEF6901A_3

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Table 75. Input select

INP3

INP2

INP1

INP0

Audio source for tone/volume processing

0

1

radio

stereo with Common Mode Rejection (CMR) (pins INAL,

INAR and INAC)

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

stereo (pins INBL and INBR)

mono symmetrical or mono with CMR (pins INC and IND)

stereo (pins INC and IND)

mono (pin INC)

mono (pin IND)

stereo with CMR (pins INBL, INBR and INC)

stereo symmetrical (pins INBL, INBR, INC and IND)

stereo (pins INAL and INAR)

mono (pin INAC)

reserved

Table 76. Input gain setting

ING3

1

ING2

0

ING1

1

ING0

1

Input gain control

−10 dB^[1]

−8 dB

1

0

1

0

1

−6 dB

1

0

−4 dB

1

−2 dB

0

0 dB

0

1

2 dB

0

1

0

4 dB

0

1

6 dB

0

1

0

8 dB

0

1

0

1

10 dB^[1]

12 dB^[1]

14 dB^[1]

16 dB^[1]

18 dB^[1]

mute

0

1

0

1

0

1

0

1

0

1

0

[1] The input gain setting ING and the volume setting VOL deﬁne the overall volume. The overall range is

limited to −83 dB to +26 dB. For overall values > +28 dB the actual gain is +28 dB. For overall values

< −83 dB the circuit is muted.

TEF6901A_3

Product data sheet

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57 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 77. Input select pin use and suggested combinations of input sources^[1]

INP[3:0]

Input pin use

Audio source

Source combinations

INAL INAR INAC INBL INBR INC

IND

0000

0001

0010

0011

0100

0101

0110

0111

1000

1001

1010

radio

x

L

R

GND

stereo CMR

stereo

L

R

x

M−

L−

M+

mono symmetrical

stereo

R−

x

M−

mono

x

M

mono

x

L

R

GND

stereo CMR

stereo symmetrical

stereo

L+

R+

L−

R−

x

L

R

x

M−

mono

[1] M−, L− and R− indicate inverted polarity of audio signal.

8.2.19 Write mode: data byte VOLUME

Table 78. VOLUME - format of data byte 11h with default setting

7

COMP

0

6

VOL6

0

5

VOL5

1

4

VOL4

1

3

2

VOL2

0

1

0

VOL3

0

VOL1

0

VOL0

0

Table 79. VOLUME - data byte 11h bit description

Bit

Symbol

Description

7

COMP

dynamic compression^[1]; see Figure 36

0 = compression is disabled (standard use)

1 = dynamic compression is enabled

6 to 0

VOL[6:0]

volume setting (see Table 83); for balance control see data byte 16h (see Table 94), for

loudness control see data byte 17h (see Table 97)

[1] Dynamic compression can be used with external sources only. When dynamic compression is active, the radio quality detection of USN,

MOD and offset is limited to AF update tuning only. For dynamic compression the bits MOD[4:0] indicate the external source input

amplitude as in the VU-meter mode; AVUM; data byte 17h (see Table 97). The FM dynamic bandwidth control is disabled and a ﬁxed

bandwidth of 113 kHz is deﬁned. However, other ﬁxed bandwidth settings are available by DYN = 0 and the setting of BW; data byte 0h

(see Table 28). The compression recovery timing is controlled by data byte 0Bh; TIMING (see Table 80). Compression start and slope

are controlled by data byte 0Eh; SOFTMUTE (see Table 81 and Table 82). Standard compression requires a setting of MST = 7 and

MSL = 1.

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

58 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 80. Dynamic compression timing; MTC[2:0] of data byte 0Bh; TIMING^[1]

MTC2

MTC1

MTC0

t_attack

0.02 s

t_recovery

0.03 s

0.06 s

0.2 s

5 s

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0.6 s

10 s

1 s

2 s

[1] Setting MTC is also in use for setting the timing of weak signal soft mute control during radio operation.

Table 81. Dynamic compression start; MST[2:0] of data byte 0Eh; SOFTMUTE^[1]

MST2

MST1

MST0

Compression range

0

1

0

1

0

1

0

1

0

1

0

1

0

1

reserved

start = 4 dBV; 2 : 1 range = 2 dB

start = −4 dBV; 2 : 1 range = 6 dB

start = −12 dBV; 2 : 1 range = 10 dB

start = −20 dBV; 2 : 1 range = 14 dB

start = −34 dBV; full range (2 : 1 = 18 dB)

[1] Setting MST is also in use for setting the start of weak signal soft mute control during radio operation.

Table 82. Dynamic compression slope; MSL[1:0] of data byte 0Eh; SOFTMUTE^[1]

MSL1

MSL0

Compression ratio

0

1

0

1

0

1

4 : 3; full range = 9 dB

standard compression (2 : 1); full range = 18 dB

4 : 1; full range = 27 dB

limiting; full range = 36 dB

[1] Setting MSL is also in use for setting the slope of weak signal soft mute control during radio operation.

TEF6901A_3

Product data sheet

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59 of 107

TEF6901A

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Integrated car radio

∆ volume

(dB)

0

(3, 0)

(3, 1)

(3, 2)

(3, 3)

(6, 1)

(5, 1) (4, 1)

(7, 0)

(7, 1)

(7, 2)

(7, 3)

−10

−20

−60

−50

−40

−30

−20

−10

0

6

line input (dBV)

001aac443

1 V = 0 dBV, (MST, MSL) control.

Fig 34. Dynamic compression volume control; non-standard characteristics

> 1 : 1

2 : 1

40 dB

∆ volume

(dB)

24 dB

0

18

dB

−10

12

dB

−20

−60

−50

−40

−30

−20

−10

0

6

line input (dBV)

001aab835

1 V = 0 dBV, MST = 7 (MST[2:0] = 111), MSL = 1 (MSL[1:0] = 01).

Fig 35. Dynamic compression volume control; typical setting

TEF6901A_3

Product data sheet

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TEF6901A

NXP Semiconductors

Integrated car radio

001aab549

0

line output

(dBV)

−20

−40

−60

−80

COMP = 1;

VOL = −5 dB

COMP = 0;

VOL = −20 dB

15 dB

−60

−40

−20

0

+6

20

line input (dBV)

1 V = 0 dBV.

Dynamic compression is realized by attenuation of the volume setting. To match the audio

amplitudes with and without compression a higher volume (VOL) setting should be selected

when compression is activated. The VOL correction value used deﬁnes the positioning of the

compression characteristic high signal attenuation and low signal ampliﬁcation.

In this example: COMP = 0: VOL = ‘user volume’; COMP = 1: VOL = ‘user volume’ + 15.

Fig 36. Example of input to output compression

Table 83. Volume setting

VOL6

VOL5

VOL4

VOL3

VOL2

VOL1

VOL0

Volume (dB)

28^[1]

27^[1]

26^[1]

25^[1]

24^[1]

23^[1]

22^[1]

21^[1]

20^[1]

19^[1]

18^[1]

17^[1]

16^[1]

15^[1]

14^[1]

13^[1]

12^[1]

11^[1]

10

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

9

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

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TEF6901A

NXP Semiconductors

Integrated car radio

Table 83. Volume setting …continued

VOL6

0

VOL5

0

1

VOL4

1

0

1

VOL3

0

1

0

1

0

1

VOL2

1

0

1

0

1

0

1

0

1

0

1

VOL1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

VOL0

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

Volume (dB)

8

7

6

5

4

3

2

1

0

−1

−2

−3

−4

−5

−6

−7

−8

−9

−10

−11

−12

−13

−14

−15

−16

−17

−18

−19

−20

−21

−22

−23

−24

−25

−26

−27

−28

−29

−30

−31

−32

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

62 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 83. Volume setting …continued

VOL6

0

1

VOL5

1

0

1

VOL4

1

0

1

0

VOL3

1

0

1

0

1

0

VOL2

1

0

1

0

1

0

1

0

1

0

1

VOL1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

VOL0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

Volume (dB)

−33

−34

−35

−36

−37

−38

−39

−40

−41

−42

−43

−44

−45

−46

−47

−48

−49

−50

−51

−52

−53

−54

−55

−56

−57^[2]

−58^[2]

−59^[2]

−60^[2]

−61^[2]

−62^[2]

−63^[2]

−64^[2]

−65^[2]

−66^[2]

−67^[2]

−68^[2]

−69^[2]

−70^[2]

−71^[2]

−72^[2]

−73^[2]

TEF6901A_3

Product data sheet

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63 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 83. Volume setting …continued

VOL6

1

VOL5

1

VOL4

0

VOL3

0

VOL2

1

VOL1

1

VOL0

0

Volume (dB)

−74^[1][2]

−75^[1][2]

−76^[1][2]

−77^[1][2]

−78^[1][2]

−79^[1][2]

−80^[1][2]

−81^[1][2]

−82^[1][2]

−83^[1][2]

−84^[1][2]

−85^[1][2]

−86^[1][2]

−87^[1][2]

−88^[1][2]

−89^[1][2]

−90^[1][2]

−91^[1][2]

−92^[1][2]

−93^[1][2]

−94^[1][2]

−95^[1][2]

−96^[1][2]

−97^[1][2]

−98^[1][2]

mute

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

[1] The overall gain is the sum of the input gain setting ING[3:0] and the volume setting VOL[6:0].

The overall gain has a range of +28 dB to −83 dB.

For ING + VOL > 28 dB the overall gain is 28 dB.

For ING + VOL < −83 dB the mute is active.

[2] For overall gain values below −75 dB (ING + VOL < −75 dB) the gain steps have a monotonous sequence.

The values of gain set error, gain step error and gain tracking error are not speciﬁed. The minimum gain

value is determined by the mute value.

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

64 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

8.2.20 Write mode: data byte TREBLE

Table 84. TREBLE - format of data byte 12h with default setting

7

6

TRE2

0

5

TRE1

0

4

TRE0

0

3

TREM

1

2

TRF1

1

TRF0

0

Table 85. TREBLE - data byte 12h bit description

Bit

7

Symbol

-

Description

reserved; 0 = normal operation

6 to 4

TRE[2:0]

treble setting; treble ampliﬁcation or gain setting; see Table 86 and

Figure 37

3

TREM

treble control mode; treble control of attenuation or gain; see Table 86

0 = treble mode is set to attenuation

1 = treble mode is set to gain

treble frequency

2 and 1

TRF[1:0]

00 = 8 kHz

01 = 10 kHz

10 = 12 kHz

11 = 15 kHz

0

-

reserved; 0 = normal operation

Table 86. Treble control setting

TRE2

TRE1

TRE0

Treble control

TREM = 0

0

1

0

1

0

1

0

1

0

1

0

1

0 dB

0

−2 dB

−4 dB

−6 dB

−8 dB

−10 dB

−12 dB

−14 dB

0

1

TREM = 1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0 dB

2 dB

4 dB

6 dB

8 dB

10 dB

12 dB

14 dB

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

65 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

001aab550

16

gain

(dB)

8

0

−8

−16

10

−2

−1

10

1

10

(kHz)

f

audio

Fig 37. Treble amplitude control characteristics; treble frequency (TRF) = 10 kHz

8.2.21 Write mode: data byte BASS

Table 87. BASS - format of data byte 13h with default setting

7

BAS3

0

6

BAS2

0

5

BAS1

0

4

BAS0

0

3

BASM

1

2

BAF1

1

0

BAF0

0

Table 88. BASS - data byte 13h bit description

Bit

7 to 4

3

Symbol

BAS[3:0]

BASM

Description

bass setting; bass ampliﬁcation or gain setting; see Table 89 and Figure 38

bass control mode; bass control of attenuation or gain; see Table 89

0 = bass mode is set to attenuation

1 = bass mode is set to gain

bass frequency

2 and 1

BAF[1:0]

00 = 60 Hz

01 = 80 Hz

10 = 100 Hz

11 = 120 Hz

0

-

reserved; 0 = normal operation

TEF6901A_3

Product data sheet

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TEF6901A

NXP Semiconductors

Integrated car radio

Table 89. Bass control setting

BAS3

BAS2

BAS1

BAS0

Bass control

BASM = 0

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0 dB

0

−2 dB

−4 dB

−6 dB

−8 dB

−10 dB

−12 dB

−14 dB

−16 dB

−18 dB

−20 dB

0

1

BASM = 1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0 dB

2 dB

4 dB

6 dB

8 dB

10 dB

12 dB

14 dB

16 dB

18 dB

20 dB

001aab551

16

G

bass

(dB)

8

0

−8

−16

−1

2

10

1

10

f

(kHz)

audio

Fig 38. Bass amplitude control characteristics; bass frequency (BAF) = 60 Hz

TEF6901A_3

Product data sheet

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TEF6901A

NXP Semiconductors

Integrated car radio

8.2.22 Write mode: data byte FADER

Table 90. FADER - format of data byte 14h with default setting

7

FADM1

0

6

FADM0

0

5

FAD5

0

4

FAD4

0

3

FAD3

0

2

FAD2

0

1

FAD1

0

FAD0

0

Table 91. FADER - data byte 14h bit description

Bit

Symbol

Description

7 and 6

FADM[1:0] fader mode; enable fader control for front or rear

00 = no fader; front output = 0 dB; rear output = 0 dB

01 = rear fader; front output = 0 dB; rear output = FAD[5:0]

10 = front fader; front output = FAD[5:0]; rear output = 0 dB

11 = output volume; front output = FAD[5:0]; rear output = FAD[5:0]

5 to 0

FAD[5:0]

Fader attenuation setting; 00 0000 to 11 1111 = −1 dB to −64 dB. For

output mute control see data byte 15h; OUTPUT (see Table 92).

8.2.23 Write mode: data byte OUTPUT

Table 92. OUTPUT - format of data byte 15h with default setting

7

6

5

4

OUTA

0

3

MULF

1

2

MURF

1

MULR

1

0

MURR

1

0

Table 93. OUTPUT - data byte 15h bit description

Bit

7 to 5

4

Symbol

-

Description

reserved; 0 = normal operation

output gain

OUTA

0 = standard output gain

1 = output gain is 3 dB

left front output mute

3

2

1

0

MULF

MURF

MULR

MURR

0 = output LFOUT is enabled

1 = output LFOUT is muted

right front output mute

0 = output RFOUT is enabled

1 = output RFOUT is muted

left rear output mute

0 = output LROUT is enabled

1 = output LROUT is muted

right rear output mute

0 = output RROUT is enabled

1 = output RROUT is muted

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

68 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

8.2.24 Write mode: data byte BALANCE

Table 94. BALANCE - format of data byte 16h with default setting

7

BALM

1

6

BAL6

0

5

BAL5

0

4

BAL4

0

3

BAL3

0

2

BAL2

0

1

BAL1

0

BAL0

0

Table 95. BALANCE - data byte 16h bit description

Bit

Symbol

Description

7

BALM

balance control mode; sets the balance mode to left or right attenuation

0 = left channel is attenuated

1 = right channel is attenuated

6 to 0

BAL[6:0]

balance setting; see Table 96

Table 96. Balance attenuation setting^[1]

BAL6

BAL5

BAL4

BAL3

BAL2

BAL1

BAL0

Balance

(dB)

0

:

0

:

0

:

0

:

0

:

0

:

0

1

:

0

−1

:

1

0

1

0

1

0

1

0

1

0

−110

−111

mute

[1] The maximum obtainable attenuation of volume and balance is limited to −83 dB. For VOL + BAL

attenuation settings below −83 dB; mute is activated.

8.2.25 Write mode: data byte LOUDNESS

Table 97. LOUDNESS - format of data byte 17h with default setting

7

AVUM

0

6

5

4

LDON

0

3

LDHB

1

2

LDS2

1

LDS1

0

LDS0

0

Table 98. LOUDNESS - data byte 17h bit description

Bit

Symbol

Description

7

AVUM

audio VU-meter mode^[1]

0 = MOD read information indicates the modulation of the radio

channel

1 and an external input source is selected = MOD read information will

indicate the input amplitude of the selected source

6 and 5

4

-

reserved; 0 = normal operation

loudness on

LDON

0 = loudness control is disabled

1 = loudness control is active; loudness is controlled by the volume

setting

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

69 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 98. LOUDNESS - data byte 17h bit description …continued

Bit

Symbol

Description

3

LDHB

loudness high boost; see Figure 39

0 = loudness control is limited to bass gain

1 = loudness controls bass gain and treble gain

2 to 0

LDS[2:0]

loudness start setting; loudness start deﬁnes the volume setting below

which loudness control is activated; see Table 100 and Figure 39

[1] The VU-meter mode can be used with external sources only. When the VU-meter mode is active, the radio

quality detection of USN, MOD and offset is limited to AF update tuning only. During VU-meter mode the

bits MOD[4:0] indicate the external source input amplitude. The FM dynamic bandwidth control is disabled

and a ﬁxed bandwidth of 113 kHz is deﬁned. However, other ﬁxed bandwidth settings are available by

DYN = 0 and the setting of BW; data byte 0h (see Table 28). See Table 99 for compression recovery timing

control. VU-meter mode is automatically activated when audio compression is on (COMP = 1).

Table 99. VU-meter timing; HTC[2:0] of data byte 0Bh; TIMING^[1]

HTC2

HTC1

HTC0

t_attack

0.02 s

t_recovery

0.03 s

0.06 s

0.2 s

5 s

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0.6 s

10 s

1 s

2 s

[1] Setting HTC[2:0] is also in use for setting the timing of weak signal high cut control during radio operation.

Table 100. Loudness start

LDS2

LDS1

LDS0

Start of loudness at volume setting

0

1

0

1

0

1

0

1

0

1

0

1

0

1

−12 dB

−16 dB

−20 dB

−24 dB

−28 dB

−32 dB

−36 dB

−40 dB

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

70 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

001aab599

−12

gain

(dB)

VOL =

−20

−28

−36

−44

−22

−24

−26

−28

−30

−32

−34

−36

−38

−40

−2

−1

2 × 10

10

1

10

20

f

(kHz)

audio

a. LDON = 1, LDHB = 0.

001aab553

−12

gain

(dB)

VOL =

−20

−28

−36

−44

−22

−24

−26/−28

−30

−32

−34/−36

−38

−40

−2

−1

2 × 10

10

1

10

20

f

(kHz)

audio

b. LDON = 1, LDHB = 1.

Fig 39. Loudness control characteristics; loudness start = −20 dB, bass frequency = 60 Hz,

treble frequency = 10 kHz; bass gain = 0 dB, treble gain = 0 dB

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

71 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

8.2.26 Write mode: data byte POWER

Table 101. POWER - format of data byte 18h with default setting

7

6

STBT

0

5

STBR

0

4

3

2

ASI

1

AST1

1

0

AST0

0

Table 102. POWER - data byte 18h bit description^[1]

Bit

7

Symbol

-

Description

reserved; 0 = normal operation

standby tuner

6

STBT

0 = normal operation

1 = power consumption is reduced by disabling part of the tuner circuit;

radio operation is disabled

5

STBR

standby RDS demodulator

0 = normal operation

1 = RDS demodulator in Standby mode

reserved; 0 = normal operation

audio step interpolation

4 and 3

2

-

ASI

0 = audio step interpolation is disabled

1 = audio step interpolation is enabled

ASI step time; selection of the audio step interpolation time

00 = 1 ms

1 and 0

AST[1:0]

01 = 3 ms

10 = 10 ms

11 = 30 ms

[1] The power saving offered by the Standby modes is limited and is not intended to realize an effective

power-down.

8.2.27 Write mode: data bytes RESERVED

Table 103. RESERVED - format of data byte 19h to 1Eh

7

6

5

4

3

2

1

0

Table 104. RESERVED - data byte 19h to 1Eh bit description^[1]

Bit

Symbol

Description

7 to 0

-

reserved; 0 = normal operation

[1] Reserved bits may control test options for factory testing.

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

72 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

8.2.28 Write mode: data byte TEST

Table 105. TEST - format of data byte 1Fh

7

RBWR

0

6

5

TEST5

0

4

TEST4

0

3

TEST3

0

2

TEST2

0

1

TEST1

0

TEST0

0

Table 106. TEST - data byte 1Fh bit description

Bit

7

Symbol

RBWR

-

Description

next I²C-bus read contains write register data (RBWR will be reset to logic 0 after read)

6

reserved; 0 = normal operation

5 to 0

TEST[5:0]

test mode

00 0000 = normal operation

00 1011 = AM IF noise blanker disabled

00 1110 = AM IF noise blanker disabled

01 1001 = AM audio noise blanker and FM noise blanker disabled

all other settings are reserved

9. Limiting values

Table 107. Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).

Symbol

Parameter

Conditions

Min

Max

Unit

V_CC

analog supply voltage on pins VCC,

VCCPLL, VCCVCO, VCCRF,

AMMIX2OUT1, AMMIX2OUT2, MIX1OUT1

and MIX1OUT2

−0.3

+10

V

∆V_CC

V_V60

V_I

voltage difference between any VCC pins

supply voltage for FM ﬁlter and demodulator

−0.3

+0.3

V

[1]

V_CC+ 0.3

+5.5

digital input voltage on pins SCL, SDA and

ADDR

V_n

voltage on all other pins

storage temperature

−0.3

−40

-

V_CC+ 0.3

+150

150

V

T_stg

T_j

°C

junction temperature

T_amb

V_esd

ambient temperature

−40

+85

electrostatic discharge voltage on

all pins except VCCVCO

[2]

[3]

[4]

[5]

human body model

machine model

−2000

−200

+2000

+200

V

pin VCCVCO

human body model

machine model

−1750

−175

+1750

+175

[1] The maximum voltage should be less than 10 V.

[2] Class 2 according to JESD22-A114D.

[3] Class B according to EIA/JESD22-A115-A.

[4] Class 1C according to JESD22-A114D.

[5] Class A according to EIA/JESD22-A115-A.

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

73 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

10. Thermal characteristics

Table 108. Thermal characteristics

Symbol

R_th(j-a)

Parameter

Conditions

Typ

55

Unit

K/W

thermal resistance from junction to ambient in free air

thermal resistance from junction to case

R_th(j-c)

18

11. Static characteristics

Table 109. Static characteristics

V_CC= 8.5 V; T_amb= 25 °C; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Supply voltage

V_CC

analog supply voltage on pins VCC,

8

8.5

7.2

9

V

VCCPLL, VCCVCO, VCCRF,

AMMIX2OUT1, AMMIX2OUT2,

MIX1OUT1 and MIX1OUT2

V_V60

supply voltage for FM ﬁlter and

demodulator

5.5

-

V

Current in FM mode

I_CC

supply current

T_amb= −40 °C

T_amb= 25 °C

T_amb= 85 °C

T_amb= −40 °C

T_amb= 25 °C

T_amb= 85 °C

T_amb= −40 °C

T_amb= 25 °C

T_amb= 85 °C

T_amb= −40 °C

T_amb= 25 °C

T_amb= 85 °C

T_amb= −40 °C

T_amb= 25 °C

T_amb= 85 °C

-

49

-

mA

40

49

60

-

49

-

I_CCPLL

I_CCVCO

I_CCRF

I_V60

supply current for tuning PLL

supply current for VCO

supply current for RF

-

4.0

3.6

3.3

2.2

2.1

2.0

12

-

2.9

5

-

16

16.5

18.5

-

10.5

13.5

14

-

supply current for FM ﬁlter and

demodulator

-

28

22

28

34

-

28

I_MIX1OUT1

I_MIX1OUT2

;

bias current of FM and AM mixer 1 at T_amb= −40 °C

output 1 or output 2

-

5.3

5.7

6.0

-

T_amb= 25 °C

4.3

-

7.5

8.0

T_amb= 85 °C

Current in AM mode

I_CC

supply current

T_amb= −40 °C

T_amb= 25 °C

T_amb= 85 °C

-

58

-

mA

44

-

75

-

TEF6901A_3

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TEF6901A

NXP Semiconductors

Integrated car radio

Table 109. Static characteristics …continued

V_CC= 8.5 V; T_amb= 25 °C; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

3.9

3.6

3.2

2.2

2.1

2.0

8.8

8.0

7.8

7.5

3.6

3.45

3.3

5.5

4.6

3.7

Max

Unit

mA

I_CCPLL

supply current for tuning PLL

T_amb= −40 °C

T_amb= 25 °C

T_amb= 85 °C

T_amb= −40 °C

T_amb= 25 °C

T_amb= 85 °C

T_amb= −40 °C

T_amb= 25 °C

T_amb= 85 °C

T_amb= −40 °C

T_amb= 25 °C

T_amb= 85 °C

-

2.9

5

-

I_CCVCO

I_CCRF

I_V60

supply current for VCO

supply current for RF

-

6.7

13

-

supply current for FM ﬁlter and

demodulator

-

6

10.2

-

I_MIX1OUT1

I_MIX1OUT2

;

bias current of FM and AM mixer 1 at T_amb= −40 °C

output 1 or output 2

-

T_amb= 25 °C

2.6

4.5

T_amb= 85 °C

-

I_AMMIX2OUT1; bias current of AM mixer 2 at output 1 T_amb= −40 °C

I_AMMIX2OUT2or output 2

-

T_amb= 25 °C

3.7

-

5.5

-

T_amb= 85 °C

Logic pins

V_IH

HIGH-level input voltage (pins RDCL

and ADDR)

1.75

−0.2

−10

-

5.5

V

V_IL

LOW-level input voltage (pins RDCL

and ADDR)

+1.0

+10

0.4

V

I_leak(od)

V_OL

open-drain leakage current (pins

RDCL and RDDA)

µA

V

LOW-level output voltage (pins RDCL open collector;

and RDDA)

I_OL= 3 mA

Power-on reset; all registers in default setting, outputs muted, Standby mode

V_th(POR)

threshold value of V_CCfor power-on

reset

V_CCdrop during

operation

T_amb= −40 °C

T_amb= 25 °C

T_amb= 85 °C

-

6.8

6.3

5.8

-

V

6.15

-

6.45

-

TEF6901A_3

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75 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

12. Dynamic characteristics

12.1 Dynamic characteristics of the tuner

Table 110. Dynamic characteristics of the tuner

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Crystal oscillator

f_xtal

crystal frequency

carrier-to-noise ratio

-

20.5

-

MHz

C/N

f_xtal= 20.5 MHz; ∆f = 10 kHz

112

dBc

----------

Hz

Circuit inputs: pins XTAL1 and XTAL2

[1]

V_o(osc)(rms)

oscillator output voltage

(RMS value)

80

-

100

−500

8

160

−250

-

mV

Ω

R_i

real part of input

impedance

V_XTAL1-XTAL2= 1 mV

C_i

input capacitance

-

pF

Tuning system; see Table 38, Table 39 and Table 41

Voltage controlled oscillator

f_osc(min)

f_osc(max)

C/N

minimum oscillator

frequency

-

153.6

MHz

maximum oscillator

frequency

256

-

carrier-to-noise ratio

f_osc= 200 MHz; ∆f = 10 kHz;

Q ≥ 30

98

dBc

----------

Hz

RR

ripple rejection;

f_ripple= 100 Hz;

44

50

-

dB

V

_CC(ripple)= 50 mV (RMS);

V_CC(ripple)

RR =

-----------------------

f_osc= 200 MHz; FM mode

V_MPXAM

Charge pump: pin CPOUT; see Table 40

I_sink(CP1)

charge pump CP1 sink V_CPOUT= 0.5 V to

130

180

240

µA

current

V

_CCPLL− 1.3 V; f_ref= 100 kHz

V_CPOUT= 0.5 V to

_CCPLL− 1.3 V; f_ref= 100 kHz

I_source(CP1)

I_sink(CP2)

I_source(CP2)

I_sink(CP3)

charge pump CP1

source current

−240

270

−180

360

−130

480

V

charge pump CP2 sink V_CPOUT= 0.7 V to

current

V

_CCPLL− 1.5 V; f_ref= 50 kHz

V_CPOUT= 0.7 V to

_CCPLL− 1.5 V; f_ref= 50 kHz

charge pump CP2

source current

−480

580

−360

780

−270

1050

V

charge pump CP3 sink V_CPOUT= 0.7 V to

current

V

_CCPLL− 0.7 V;

f

_ref= 20 kHz or 25 kHz

I_source(CP3)

charge pump CP3

source current

V_CPOUT= 0.7 V to

_CCPLL− 0.7 V;

_ref= 20 kHz or 25 kHz

−1050

−780

−580

µA

V

f

I_sink(CP4)

charge pump CP4 sink V_CPOUT= 0.7 V to

1040

1400

1900

µA

current

V

_CCPLL− 0.7 V; f_ref= 20 kHz

V_CPOUT= 0.7 V to

_CCPLL− 0.7 V; f_ref= 20 kHz

I_source(CP4)

charge pump CP4

source current

−1900

−1400

−1040

V

TEF6901A_3

Product data sheet

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76 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 110. Dynamic characteristics of the tuner …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

I_sink(CP5)

charge pump CP5 sink V_CPOUT= 0.7 V to

1630

2200

2970

µA

current

V

_CCPLL− 0.7 V; f_ref= 10 kHz

V_CPOUT= 0.7 V to

_CCPLL− 0.7 V; f_ref= 10 kHz

I_source(CP5)

charge pump CP5

source current

−2970

−2200

−1630

µA

V

Charge pump: pin VTUNE

I_sink

charge pump sink

current

V_VTUNE= 0.8 V to

V_CCPLL− 0.7 V

2070

−3780

-

2800

−2800

0.75

3780

−2070

1

µA

ms

I_source

t_tune

charge pump source

current

V_VTUNE= 0.8 V to

_CCPLL− 0.7 V

V

tuning time

Europe FM and US FM band;

_ref= 100 kHz; f_RF= 87.5 MHz

f

to 108 MHz

AM MW band; f_ref= 20 kHz;

-

5

6

20

ms

f

_RF= 0.53 MHz to 1.7 MHz

T_cy

inaudible AF update

cycle time including

1 ms mute start and

1 ms mute release time

6.5

Antenna Digital Auto Alignment (DAA)

DAA: pin DAAOUT^[2]

I_leak(DAA)

antenna DAA input

leakage current on pin

VTUNE (test mode)

V

_VTUNE= 0.4 V to 8 V

−10

-

+10

nA

∆V_o(T)

output voltage variation T_amb= −40 °C to +85 °C;

with temperature DAA[6:0] = 100 0000

−30

-

+30

mV

∆V_o(sink)

∆V_o(source)

output voltage variation V_VTUNE= 4 V; I_L= 50 µA

caused by sink current

−V_LSB

+V_LSB

output voltage variation

caused by source

current

V_VTUNE= 4 V; I_L= −50 µA

t_st

settling time

V_DAAOUT= 0.2 V to 8.25 V;

C_L= 270 pF

-

30

60

µs

AM mode

V_o

output voltage

DAA[6:0] = 000 0000

DAA[6:0] = 111 1111

-

0.5

8.5

V

8.0

FM mode

V_o(n)

output noise voltage

ripple rejection

V_VTUNE= 4 V;

DAA[6:0] = 100 0000;

B = 300 Hz to 22 kHz

-

30

40

100

-

µV

RR

V

_VTUNE= 4 V;

DAA[6:0] = 101 0101;

_ripple= 100 Hz;

_CC(ripple)= 100 mV

dB

f

V

∆V_o(step)

step accuracy

V_VTUNE= 2 V

−0.5V_LSB

0

+0.5V_LSB

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

77 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 110. Dynamic characteristics of the tuner …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

V_o

output voltage

V_VTUNE= 0.5 V;

-

0.5

V

DAA[6:0] = 000 0000

V_VTUNE= 4.25 V;

8

-

V

DAA[6:0] = 111 1111

V_VTUNE= 4 V

DAA[6:0] = 000 0000

DAA[6:0] = 100 0000

V_VTUNE= 2 V

-

0.5

V

3.8

4.23

4.65

DAA[6:0] = 101 0101

DAA[6:0] = 010 1010

2.45

1.3

2.74

1.46

3.05

1.6

V

AM channel

AM RF AGC detector A: pin AMMIX1IN; see Figure 40

V_{AMMIX1IN(p-p)}AM AGC start level

(peak-to-peak value)

AGC[1:0] = 00; m = 1

700

-

1000

0.23

1400

-

mV

V

AM RF AGC detector B: pin AMIF2IN; see Figure 40

V_AMIF2IN(p-p)IF voltage on pin

AMIF2IN for AGC start

(peak-to-peak value)

m = 1; f_mod= 400 Hz

RF cascode AGC

∆AGC

AGC control range

-

10

5

-

dB

V

V_VAMCAS

cascode base voltage

AGC[1:0] = 00; maximum gain

at cascode AGC

R_VAMCAS

I_VAMCAS

cascode base source

resistance

-

1.6

-

kΩ

cascode base current

drive capability

source current

sink current

100

-

µA

mV

-

0

V_VAMCASFB

cascode emitter

DC voltage

minimum gain at cascode

AGC

320

maximum gain at cascode

AGC

KAGC = 1

KAGC = 0

-

800

4.15

-

mV

V

-

I_VAMCASFB

cascode feedback

current

2

µA

RF PIN diode AGC current generator output: pin IAMAGC

∆AGC

AGC control range

f_RF= 999 kHz; dummy aerial

15 pF/60 pF

-

50

-

dB

I_sink(max)

maximum AGC sink

current

V_IAMAGC> 1 V

10

mA

I_source

AGC source current

AGC not active

AGCSW = 1

AGCSW = 0

-

−2.5

-

µA

mA

nA

I_sink(FM)

AGC sink current in

FM mode

0.5

-

1

-

100

TEF6901A_3

Product data sheet

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TEF6901A

NXP Semiconductors

Integrated car radio

Table 110. Dynamic characteristics of the tuner …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

C_IAMAGC

source current

generator output

capacitance

-

3

-

pF

V_VDCPIN

bias voltage for AM PIN

diode

4.5

5

5.5

V

R_VDCPIN

I_bias(max)

bias source resistance

maximum bias current

-

150

-

Ω

source current

sink current

20

30

-

mA

µA

AM mixer 1 (IF1 = 10.7 MHz)

Mixer input: pins AMMIX1IN and AMMIX1DEC

[3]

R_i

input resistance

10

-

13.2

16

-

kΩ

pF

C_i

input capacitance

3

-

V_i(max)

maximum input voltage 1 dB compression point of

500

-

mV

V

_{MIX1OUT1-MIX1OUT2}; m = 0

Mixer output: pins MIX1OUT1 and MIX1OUT2

V_o(max)(p-p)

g_m(conv)

maximum output voltage

(peak-to-peak value)

-

12

-

V

conversion

transconductance I_o/ V_i

1.75

2.5

3.25

mA

-------

V

g_m(conv)(T)

conversion

transconductance

variation with

T

_amb= −40 °C

-

1

-

dB

T_amb= 85 °C

−0.2

temperature related to

T

_amb= 25 °C

[4]

R_o

output resistance

100

-

kΩ

C_o

output capacitance

4

7

-

pF

IP3

3rd-order intercept point R_L= 2.6 kΩ (AC load between

output pins); ∆f = 300 kHz

135

138

dBµV

IP2

2nd-order intercept

point

R_L= 2.6 kΩ (AC load between

output pins)

-

170

5.8

-

dBµV

V_i(n)(eq)

equivalent input noise

voltage

band limited noise;

8

nV

----------

R

_gen= 750 Ω; noise of R_gen

Hz

included; R_L= 2.6 kΩ

(AC load between output pins)

F

noise ﬁgure of

AM mixer 1

-

4.5

7.1

dB

AM mixer 2 (IF2 = 450 kHz)

Mixer input: pins IF1IN and IF1DEC

[5]

R_i

input resistance

-

330

3

-

Ω

C_i

input capacitance

-

pF

V

V_i(max)(p)

maximum input voltage 1 dB compression point of

(peak value) V_{AMMIX2OUT1-AMMIX2OUT2}

1.1

1.4

Mixer output: pins AMMIX2OUT1 and AMMIX2OUT2

[6]

R_o

output resistance

50

-

kΩ

TEF6901A_3

Product data sheet

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79 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 110. Dynamic characteristics of the tuner …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; unless otherwise speciﬁed.

Symbol

C_o

Parameter

Conditions

Min

Typ

3

Max

Unit

pF

V

[6]

output capacitance

-

V_o(max)(p-p)

maximum output voltage V_CCAMMIX2= 8.5 V

(peak-to-peak value)

12

g_m(conv)

conversion

transconductance I_o/ V_i

1.2

1.6

0

2.1

+1

mA

-------

V

g_m(conv)(T)

conversion

T

_amb= −40 °C to +85 °C

−1

dB

transconductance

variation with

temperature related to

T

_amb= 25 °C

IP3

3rd-order intercept point R_L= 1.5 kΩ (AC load between

output pins); ∆f = 300 kHz

134

137

170

15

-

dBµV

IP2

2nd-order intercept

point

R_L= 1.5 kΩ (AC load between

output pins)

-

V_i(n)(eq)

equivalent input noise

voltage

R_gen= 330 Ω; noise of R_gen

included; R_L= 1.5 kΩ

22

nV

----------

Hz

(AC load between output pins)

F

noise ﬁgure of

AM mixer 2

-

16

-

19.5

10

dB

I_leak

mixer leakage current

FM mode;

µA

T

_amb= −40 °C to +85 °C

AM IF2 AGC stage: pins AMIF2IN and AMIF2DEC^[5]

R_i

C_i

V_i

input resistance

input capacitance

input voltage

1.6

2

2.4

-

kΩ

pF

µV

-

5

for α = −10 dB audio

10

20

attenuation at MPXAMOUT

V_AGC(stop)

AGC stop voltage (input

carrier voltage)

100

-

mV

AM demodulator output: pin MPXAMOUT

V_sens

sensitivity voltage

m = 0.3; f_mod= 400 Hz;

B

_AF= 2.15 kHz; R_gen= 2 kΩ

(S+N)/N = 26 dB

-

60

90

900

-

µV

dB

(S+N)/N = 46 dB

-

600

60

(S+N)/N

V_o

maximum signal plus

noise-to-noise ratio

m = 0.3; f_mod= 400 Hz;

_AF= 2.15 kHz; R_gen= 2 kΩ

54

B

MPXAMOUT output

voltage

m = 0.3; f_mod= 400 Hz;

V_i= 100 µV to 100 mV

200

-

255

0.5

320

1

mV

%

THD

total harmonic distortion B_AF= 2.15 kHz;

V

_AMIF2IN= 100 µV to 100 mV;

m = 0.8; f_mod= 400 Hz

t_st

AM AGC settling time

V_AMIF2IN= 100 µV to 100 mV

V_AMIF2IN= 100 mV to 100 µV

-

165

-

ms

Ω

-

440

-

R_o

C_o

Z_L

output resistance

output capacitance

load impedance

-

500

-

3

-

pF

kΩ

10

TEF6901A_3

Product data sheet

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TEF6901A

NXP Semiconductors

Integrated car radio

Table 110. Dynamic characteristics of the tuner …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; unless otherwise speciﬁed.

Symbol

Parameter

ripple rejection

V_CC(ripple)

Conditions

Min

Typ

Max

Unit

RR

f_ripple= 100 Hz;

20

26

-

dB

V

_CC(ripple)= 50 mV (RMS);

_AMIF2IN= 10 mV

RR =

----------------------------

V_MPXAMOUT

AM level detector output: pin LEVEL

Input: pins AMIF2IN and AMIF2DEC

LST

level start alignment

position

V_i(AMIF2IN)= 95 µV; level slope

aligned to (800 ± 50) mV/dec;

level start aligned to

6

-

25

-

V

_LEVEL= (1.24 ± 0.04) V

∆V_LEVEL

step size for adjustment V_AMIF2IN= 0 V; default setting

20

0

40

-

72

7

mV

-

of level starting point

of level slope

LSL

level slope alignment

position

level slope measured from

V

_i(AMIF2IN)= 95 µV to

_i(AMIF2IN)= 950 µV; level

slope aligned to

(800 ± 50) mV/dec

∆V_step

step size for adjustment V_AMIF2IN= 1.4 mV

of level slope

40

-

60

80

-

mV

-------

dec

∆V_LEVEL(T)

level voltage drift over

temperature

T_amb= −40 °C to +85 °C

0.05

dB

------

K

R_o

output resistance

-

500

Ω

R_L

output load resistance

25

-

kΩ

pF

C_L(max)

maximum load

capacitance

RR

ripple rejection

V_CC(ripple)= 50 mV (RMS);

_ripple= 100 Hz;

V_AMIF2IN= 10 mV

-

24

-

dB

f

V_CC(ripple)

RR =

--------------------------

V_LEVEL(AC)

AM noise blanker IF part

t_sup

V_th

suppression time at IF2 IF2 = 450 kHz

8

µs

noise blanker trigger

threshold

noise pulse at RF input

(CISPR 16-1);

repetition rate = 100 Hz; pulse

duration 5 ns; t_rand t_f< 1 ns;

measured at dummy aerial

input (15 pF/60 pF)

NBL[1:0] = 00

NBL[1:0] = 01

NBL[1:0] = 10

-

1.4

1.0

0.7

5

-

V

%

m_th

modulation threshold for maximum modulation, which

blanking of audio signal triggers the blanking circuit in

the audio part; LODX = 0

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

81 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 110. Dynamic characteristics of the tuner …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

FM channel

FM RF AGC (FM distance mode; LODX = 0)

Inputs: pins FMMIX1IN1 and FMMIX1IN2^[7]

V_i(RF)

RF input voltage for

AGC[1:0] = 11

-

9

-

mV

start of wideband AGC

PIN diode drive output: pin IFMAGC

I_source(max)

maximum AGC source AGC[1:0] = 00; KAGC = 0;

−15

−10

−7

mA

current

V

_i(RF)> V_AGC(start)

;

see Table 34

I_sink(max)

I_source

maximum AGC sink

AGC[1:0] = 00; KAGC = 0

7

10

15

current at AGC recovery

AGC source current

AM mode; AGCSW = 1

AM mode; AGCSW = 0

LODX = 1 (FM local)

−6

−4

0

−2.5

-

mA

-

−0.75

−0.5

−0.35

Voltage for narrow-band AGC: pin LEVEL

V_th

threshold voltage for

narrow-band AGC

KAGC = 1 (keyed AGC)

500

950

1400

mV

FM mixer 1 (IF1 = 10.7 MHz)

Mixer input: pins FMMIX1IN1 and FMMIX1IN2^[7]and mixer output: pins MIX1OUT1 and MIX1OUT2^[4]

R_i

input resistance

RFGAIN = 0

RFGAIN = 1

3

3.8

2.0

2

4.7

2.5

4

kΩ

pF

kΩ

pF

mV

1.6

-

C_i

input capacitance

output resistance

output capacitance

R_o

100

-

C_o

4

6

V_i(RF)(max)

maximum RF input

voltage

1 dB compression point of

FM mixer output voltage

75

100

-

V_i(n)(eq)

equivalent input noise

voltage

R_gen= 200 Ω; noise of R_gen

included; R_L= 2.6 kΩ

-

2.7

3.2

nV

----------

Hz

g_m(conv)

conversion

transconductance I_o/ V_i

RFGAIN = 0

RFGAIN = 1

12

24

-

18

25

50

-

mA

-------

V

36

mA

-------

V

g_m(conv)(T)

conversion

−0.2 × 10⁻²

K⁻¹

transconductance

variation with

temperature

F

noise ﬁgure

R_gen= 300 Ω

T_amb= −40 °C

T_amb= 25 °C

T_amb= 85 °C

-

2.8

3.1

3.5

200

-

dB

Ω

4.6

-

R_gen

recommended

generator resistance

IP3

3rd-order intercept point RFGAIN = 0

-

120

-

dBµV

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

82 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 110. Dynamic characteristics of the tuner …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

IRR

image rejection ratio

V_owanted

f_RFwanted= 87.5 MHz;

25

35

-

dB

f

_RFimage= 108.9 MHz

-------------------

V_oimage

V_o(max)(p-p)

maximum output voltage

(peak-to-peak value)

4.5

5.6

-

V

FM ﬁlter and demodulator

Tunable ﬁlter

B_max

maximum bandwidth

DYN = 1

DYN = 0

DYN = 1

DYN = 0

-

165

57

-

kHz

B_min

minimum bandwidth

57

∆f_IF2

FM IF2 center frequency

alignment step size

2

f_IF2(T)

temperature

dependence of IF2

center frequency

−60

-

+60

Hz

------

K

FM demodulator

FM mixer 2 input: pins IF1IN and IF1DEC^[5]and output: pin MPXAMOUT

R_i

input resistance

275

330

400

Ω

R_o

output resistance

load resistance

-

500

Ω

R_L

20

-

kΩ

pF

mV

µV

C_L

load capacitance

maximum input voltage

-

20

-

V_i(max)

V_{i(start)(lim)}

-

280

2.3

input voltage for start of α_AF= −3 dB

-

limiting of V_MPXAMOUT

V_i(sens)

sensitivity input voltage ∆f = 22.5 kHz; f_mod= 1 kHz;

de-emphasis = 50 µs

(S+N)/N = 26 dB;

-

5

-

µV

R

_gen= 330 Ω

(S+N)/N = 46 dB

-

41

78

-

µV

(S+N)/N

ultimate signal plus

noise-to-noise ratio on

pin MPXAMOUT

∆f = 22.5 kHz; f_mod= 1 kHz;

V_i= 3 mV;

75

dB

de-emphasis = 50 µs;

B = 300 Hz to 22 kHz

THD

∆f_max

α_AM

total harmonic distortion ∆f = 75 kHz; f_mod= 1 kHz;

of V_MPXAMOUTV_i= 10 mV

-

0.5

1

-

%

maximum FM deviation THD = 3 %; f_mod= 1 kHz;

V_i= 10 mV

120

180

kHz

AM suppression

FM reference: ∆f = 22.5 kHz;

_mod= 1 kHz;

AM: m = 0.3; f_mod= 1 kHz;

f

V

----^M----^P---^X---^A---^M----^O---^U---^T---⁽--^F--^M----⁾

V_MPXAMOUT(AM)

de-emphasis = 50 µs

10 µV < V_i< 1 V

100 µV < V_i< 1 V

-

40

50

-

dB

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

83 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 110. Dynamic characteristics of the tuner …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

[4]

V_o

output voltage

V_i= 20 µV to 1 V

∆f = 1.2 kHz; f_mod= 57 kHz

∆f = 22.5 kHz; f_mod= 1 kHz

C_L= 0 F; R_L> 20 kΩ

f_ripple= 100 Hz to 20 kHz;

-

7

-

mV

kHz

dB

180

230

65

36

290

f_cut

cut-off frequency

ripple rejection

V_CC(ripple)

-

RR

V

_CC(ripple)= 50 mV;

_IF1IN= 3 mV

RR =

----------------------------

V_MPXAMOUT

FM level detector output: pin LEVEL^[5]

R_o

output resistance

load resistance

load capacitance

-

500

-

Ω

R_L

25

-

kΩ

pF

-

C_L

25

LST

level start alignment

position

V_i(IF1IN)= 135 µV; level slope

aligned to (800 ± 50) mV/dec;

level start aligned to

6

V

_LEVEL= (1.47 ± 0.04) V

∆V_LEVEL

step size of level start

adjustment

LSL[2:0] = 100

20

0

40

-

72

7

mV

-

LSL

level slope alignment

position

level slope measured from

V

_i(IF1IN)= 135 µV to

_i(IF1IN)= 1.35 mV; level slope

aligned to (800 ± 50) mV/dec

∆V_step

step size of level slope V_i= 1 mV

adjustment

40

-

60

25

80

-

mV

-------

dec

RR

ripple rejection

V

_CC(ripple)= 50 mV;

dB

f

_ripple= 100 Hz

V_CC(ripple)

RR =

-----------------------

V_level(AC)

IF counter (FM IF2 or AM IF2 counter); see Table 8

Pins IF1IN and IF1DEC^[5]

V_i(sens)

Pins AMIF2IN and AMIF2DEC^[8]

V_i(sens)sensitivity voltage

sensitivity voltage

FM mode

-

5

10

µV

AM mode; m = 0

70

260

[1] Measured between pins XTAL1 and XTAL2.

n

[2] Conversion gain formula of DAA: V_DAAOUT

=

1.915 ×

+ 0.1 × V

where n = 0 to 127.

VTUNE

--------

128

[3] Input parameters of AM mixer 1 measured between pins AMMIX1IN and AMMIX1DEC.

[4] Output parameters of FM and AM mixer 1 measured between pins MIX1OUT1 and MIX1OUT2.

[5] Input parameters of FM mixer 2 measured between pins IF1IN and IF1DEC.

[6] Output parameters of AM mixer 2 measured between pins AMMIX2OUT1 and AMMIX2OUT2.

[7] Input parameters of FM mixer 1 measured between pins FMMIX1IN1 and FMMIX1IN2.

[8] Input parameters of AM mixer 2 measured between pins AMIF2IN and AMIF2DEC.

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

84 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

JFET

RF

FILTER

RFIN

LNA

CASCODE

diode

MIX1OUT1,

MIX1OUT2

AMMIX2OUT1,

AMMIX2OUT2 AMIF2IN

TRFAGC IAMAGC

15

VAMCASFB

18

VAMCAS

19

AMMIX1IN

21

IF1IN

27

9

23, 24

28, 29

32

X

AM

MIXER1

MIXER2

detector A

AGC

THRESHOLD

TEF6901AH

AGC threshold

AGC[1:0]

AGC

detector B

008aaa004

reduce cascode enable 1 mA

AGC control range pin diode current

KAGC (FM mode)

AGCSW

Fig 40. AM AGC circuit

12.2 Dynamic characteristics of the sound processor

Table 111. Dynamic characteristics of the sound processor

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; treble: 10 kHz ﬁlter frequency; treble = 0 dB;

bass: 60 Hz ﬁlter frequency; bass = 0 dB; f_audio= 1 kHz; G_vol= 0 dB; G_fader= 0 dB; loudness off; standard output gain

(byte OUTPUT; bit OUTA = 0); R_L= 10 kΩ; C_L= 1 nF; unless otherwise speciﬁed.

Symbol

Stereo decoder and AM path

V_o(FM)FM mono output voltage

Parameter

Conditions

Min

Typ

Max

Unit

f_MPXAMOUT= 1 kHz;

-

330

-

mV

on pins LFOUT and

RFOUT

30 % FM modulation without

pilot

V_o(AM)

AM output voltage on

pins LFOUT and RFOUT 30 % AM modulation

f_AM= 1 kHz;

-

365

-

mV

dB

α_cs

channel separation

stereo adjust for ﬁne

f_FMMPX= 1 kHz

40

g_f(L-R)

measure 1 kHz level for L − R

adjustment of separation modulation; compare to 1 kHz

level for L + R modulation

CSA[3:0] = 0000

CSA[3:0] = 0001

:

-

0

-

dB

0.2

:

CSA[3:0] = 1110

CSA[3:0] = 1111

2.8

3.0

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

85 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 111. Dynamic characteristics of the sound processor …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; treble: 10 kHz ﬁlter frequency; treble = 0 dB;

bass: 60 Hz ﬁlter frequency; bass = 0 dB; f_audio= 1 kHz; G_vol= 0 dB; G_fader= 0 dB; loudness off; standard output gain

(byte OUTPUT; bit OUTA = 0); R_L= 10 kΩ; C_L= 1 nF; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

S/N

signal-to-noise ratio

f_MPXAMIN= 20 Hz to 15 kHz;

referenced to 1 kHz at

91 % FM modulation;

DEMP = 1

70

-

dB

THD

total harmonic distortion FM mode; DEMP = 1;

measured with 15 kHz

brick-wall low-pass ﬁlter

f_MPXAMIN= 200 Hz to

-

0.3

%

15 kHz

V_MPXAMIN= 50 %; L; pilot on

-

0.3

%

V_MPXAMIN= 50 %; R;

pilot on

V_o(bal)

mono channel balance

FM mode

−1

-

+1

dB

V_oL

--------

V_oR

α₁₉

pilot signal suppression

subcarrier suppression

9 % pilot; f_pilot= 19 kHz;

referenced to 1 kHz at

91 % FM modulation;

DEMP = 1

40

50

-

dB

α

modulation off; referenced to

1 kHz at 91 % FM modulation

f

_sc= 38 kHz

35

40

50

24

50

-

dB

f_sc= 57 kHz

f_sc= 76 kHz

60

-

PSRR

power supply ripple

rejection

FM mode; f_ripple= 100 Hz;

V_CC(AC)= V_ripple= 100 mV

(RMS)

∆V_out

frequency response

FM mode

f_MPXAMIN= 20 Hz

f_MPXAMIN= 20 kHz

−3 dB point; see Figure 31

DEMP = 1 (τ = 50 µs)

DEMP = 0 (τ = 75 µs)

stereo

−0.5

-

+0.5

dB

f_cut(de-em)

cut-off frequency of

de-emphasis ﬁlter

-

3.18

2.12

-

kHz

m_i(pilot)

pilot threshold

modulation for automatic

switching by pilot input

voltage

on

-

4.0

2.7

5.5

-

%

off

1.3

hys_pilot

hysteresis of pilot

threshold voltage

-

2

-

dB

Noise blanker

FM part

t_sup(min)

minimum suppression

time

-

15

-

µs

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

86 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 111. Dynamic characteristics of the sound processor …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; treble: 10 kHz ﬁlter frequency; treble = 0 dB;

bass: 60 Hz ﬁlter frequency; bass = 0 dB; f_audio= 1 kHz; G_vol= 0 dB; G_fader= 0 dB; loudness off; standard output gain

(byte OUTPUT; bit OUTA = 0); R_L= 10 kΩ; C_L= 1 nF; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

V_MPXAMIN(M)

noise blanker sensitivity

at MPXAMIN input

(peak value of noise

pulses)

t

_pulse= 10 µs; f_pulse= 100 Hz

NBS[1:0] = 00

-

65

-

mV

NBS[1:0] = 01

100

125

160

NBS[1:0] = 10

NBS[1:0] = 11

V_LEVEL(M)

noise blanker sensitivity

at LEVEL output

(peak value of noise

pulses) (test mode)

t

_pulse= 10 µs; f_pulse= 100 Hz

NBL[1:0] = 00

-

10

25

36

50

-

mV

NBL[1:0] = 01

NBL[1:0] = 10

NBL[1:0] = 11

AM audio part

t_sup(min)

minimum suppression

time

-

200

-

µs

M_AM

noise blanker sensitivity; NBS[1:0] = 00

-

16.5

18.6

21

-

V/ms

triggered from pulses at

MPXAMIN slew rate

NBS[1:0] = 10

NBS[1:0] = 01

NBS[1:0] = 11

23.5

Weak signal processing

Detectors

[1]

V_eqUSN/∆f

USN equivalent voltage

to frequency deviation

ratio

see Figure 24;

_MPXAMOUT= 150 kHz;

_MPXAMOUT= 250 mV;

f

V

HCMP = 1

USS[1:0] = 00

USS[1:0] = 01

USS[1:0] = 10

USS[1:0] = 11

-

−0.06

−0.08

−0.12

−0.16

-

V/kHz

[1]

V_eqWAM/V_LEV(p-p)WAM equivalent voltage see Figure 24;

to peak-to-peak voltage

on pin LEVEL ratio

V_LEVEL= 200 mV (p-p) at

f = 21 kHz on the level

voltage; HCMP = 1

WAS[1:0] = 00

WAS[1:0] = 01

WAS[1:0] = 10

WAS[1:0] = 11

-

−7.5

−10

−15

−20

-

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

87 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 111. Dynamic characteristics of the sound processor …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; treble: 10 kHz ﬁlter frequency; treble = 0 dB;

bass: 60 Hz ﬁlter frequency; bass = 0 dB; f_audio= 1 kHz; G_vol= 0 dB; G_fader= 0 dB; loudness off; standard output gain

(byte OUTPUT; bit OUTA = 0); R_L= 10 kΩ; C_L= 1 nF; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Setting of time constants for SNC, MUTE and HCC

t_USN(attack)

USN detector attack time soft mute and SNC

-

1

-

ms

t_{USN(recovery)}

USN detector recovery

time

soft mute and SNC

∆USS

USN detector

desensitization

USN sensitivity setting (USS)

versus level voltage (USN

sensitivity setting is

automatically reduced as level

voltage decreases)

V

_LEVEL> 1.25 V

-

3

2

1

0

-

1.25 V > V_LEVEL> 1.125 V

1.125 V > V_LEVEL> 1.0 V

1.0 V > V_LEVEL

-

t_WAM(attack)

WAM detector attack

time (SNC)

1

ms

t_{WAM(recovery)}

t_{peak(USN)(attack)}

WAM detector recovery

time (SNC)

-

1

-

ms

peak detector attack time

for USN read-out via

I²C-bus

t_{peak(USN)(recovery)}peak detector recovery

time for USN read-out via

I²C-bus

-

10

1

-

ms

t_{peak(WAM)(attack)}

peak detector attack time

for WAM read-out via

I²C-bus

t_{peak(WAM)(recovery)}peak detector recovery

time for WAM read-out

10

via I²C-bus

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

88 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 111. Dynamic characteristics of the sound processor …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; treble: 10 kHz ﬁlter frequency; treble = 0 dB;

bass: 60 Hz ﬁlter frequency; bass = 0 dB; f_audio= 1 kHz; G_vol= 0 dB; G_fader= 0 dB; loudness off; standard output gain

(byte OUTPUT; bit OUTA = 0); R_L= 10 kΩ; C_L= 1 nF; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Control functions

V_start(mute)

soft mute start voltage

FM mode; see Figure 28;

equivalent level voltage that

causes α_mute= 3 dB;

MSL[1:0] = 11

MST[2:0] = 000

MST[2:0] = 001

MST[2:0] = 010

MST[2:0] = 011

MST[2:0] = 100

MST[2:0] = 101

MST[2:0] = 110

MST[2:0] = 111

-

0.75

0.88

1

-

V

1.12

1.25

0.68

0.73

0.85

AM mode; see Figure 29;

equivalent level voltage that

causes α_mute= 3 dB;

MSL[1:0] = 11

MST[2:0] = 000

MST[2:0] = 001

MST[2:0] = 010

MST[2:0] = 011

MST[2:0] = 100

MST[2:0] = 101

MST[2:0] = 110

MST[2:0] = 111

-

1.35

1.58

1.80

1.12

1.25

1.50

1.70

1.91

-

V

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

89 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 111. Dynamic characteristics of the sound processor …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; treble: 10 kHz ﬁlter frequency; treble = 0 dB;

bass: 60 Hz ﬁlter frequency; bass = 0 dB; f_audio= 1 kHz; G_vol= 0 dB; G_fader= 0 dB; loudness off; standard output gain

(byte OUTPUT; bit OUTA = 0); R_L= 10 kΩ; C_L= 1 nF; unless otherwise speciﬁed.

Symbol

Parameter

soft mute slope

∆α

Conditions

Min

Typ

Max

Unit

C_mute

FM mode; see Figure 28;

slope of soft mute attenuation

with respect to equivalent level

voltage; MST[2:0] = 000

mute

C

=

--------------------------

mute

∆V

eq.LEVEL

MSLE = 0; MSL[1:0] = 00

MSLE = 0; MSL[1:0] = 01

MSLE = 0; MSL[1:0] = 10

MSLE = 0; MSL[1:0] = 11

MSLE = 1; MSL[1:0] = 00

MSLE = 1; MSL[1:0] = 01

-

8

-

dB/V

16

24

32

40

48

AM mode; see Figure 29;

slope of soft mute attenuation

with respect to equivalent level

voltage; MST[2:0] = 011

MSLE = 0; MSL[1:0] = 00

MSLE = 0; MSL[1:0] = 01

MSLE = 0; MSL[1:0] = 10

MSLE = 0; MSL[1:0] = 11

MSLE = 1; MSL[1:0] = 00

MSLE = 1; MSL[1:0] = 01

MSLE = 1; MSL[1:0] = 10

MSLE = 1; MSL[1:0] = 11

see Figure 30;

-

8

-

dB/V

12

16

20

24

28

32

36

α_mute(max)

maximum soft mute

attenuation by USN

f_MPXAMOUT= 150 kHz;

_MPXAMOUT= 0.6 V (RMS);

V

USS[1:0] = 11

UMD[1:0] = 00

UMD[1:0] = 01

UMD[1:0] = 10

UMD[1:0] = 11

-

3

-

dB

6

9

12

V_start(SNC)

SNC stereo blend start

voltage

see Figure 25; equivalent level

voltage that causes channel

separation is 10 dB;

SSL[1:0] = 10

SST[3:0] = 0000

-

1.5

:

-

V

:

SST[3:0] = 1000

2.0

:

SST[3:0] = 1111

2.45

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

90 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 111. Dynamic characteristics of the sound processor …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; treble: 10 kHz ﬁlter frequency; treble = 0 dB;

bass: 60 Hz ﬁlter frequency; bass = 0 dB; f_audio= 1 kHz; G_vol= 0 dB; G_fader= 0 dB; loudness off; standard output gain

(byte OUTPUT; bit OUTA = 0); R_L= 10 kΩ; C_L= 1 nF; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

C_SNC

SNC slope

see Figure 25; slope of

channel separation between

30 dB and 10 dB with respect

to level voltage;

∆α

cs

C

=

--------------------------

∆V

SNC

eq.LEVEL

SST[3:0] = 1010

SSL[1:0] = 00

SSL[1:0] = 01

SSL[1:0] = 10

SSL[1:0] = 11

-

38

51

63

72

-

dB/V

V_start(HCC)

HCC start voltage

see Figure 26; f_audio= 10 kHz;

equivalent level voltage that

causes α_HCC= 3 dB;

HSL[1:0] = 10

HST[2:0] = 000

HST[2:0] = 001

HST[2:0] = 010

HST[2:0] = 011

HST[2:0] = 100

HST[2:0] = 101

HST[2:0] = 110

HST[2:0] = 111

-

1.17

1.42

1.67

1.92

2.17

2.67

3.17

3.67

-

V

C_HCC

HCC slope

see Figure 26; f_audio= 10 kHz;

HST[2:0] = 010

∆α

10 kHz

C

=

--------------------------

HSL[1:0] = 00

-

9

-

dB/V

HCC

∆V

eq.LEVEL

HSL[1:0] = 01

11

14

18

HSL[1:0] = 10

HSL[1:0] = 11

α_HCC(max)

maximum HCC

attenuation

see Figure 26; f_audio= 10 kHz

HCSF = 1; HCSFH = 0

HCSF = 0; HCSFH = 0

-

10

14

-

dB

f_cut

cut-off frequency of ﬁxed see Figure 27; −3 dB point

HCC

(ﬁrst order ﬁlter)

HCF[2:0] = 000

HCF[2:0] = 001

HCF[2:0] = 010

HCF[2:0] = 011

HCF[2:0] = 100

HCF[2:0] = 101

HCF[2:0] = 110

HCF[2:0] = 111

-

reserved

-

kHz

-

2

3

5

7

10

wide

unlimited

-

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

91 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 111. Dynamic characteristics of the sound processor …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; treble: 10 kHz ﬁlter frequency; treble = 0 dB;

bass: 60 Hz ﬁlter frequency; bass = 0 dB; f_audio= 1 kHz; G_vol= 0 dB; G_fader= 0 dB; loudness off; standard output gain

(byte OUTPUT; bit OUTA = 0); R_L= 10 kΩ; C_L= 1 nF; unless otherwise speciﬁed.

Symbol

Analog-to-digital converters for I²C-bus

Level analog-to-digital converter (8-bit); see Table 10

Parameter

Conditions

Min

Typ

Max

Unit

V_LEVEL(min)

V_LEVEL(max)

∆V_LEVEL

lower voltage limit of

conversion range

-

0.25

4.25

15.7

-

V

upper voltage limit of

conversion range

V

bit resolution voltage

mV

Ultrasonic noise analog-to-digital converter (4-bit); see Figure 24

∆f_USN(min)

∆f_USN(max)

∆f_USN

conversion range lower

deviation limit

f_MPXAMOUT= 150 kHz

-

0

-

kHz

conversion range upper f_MPXAMOUT= 150 kHz

deviation limit

100

6.25

bit resolution

Wideband AM analog-to-digital converter (4-bit); see Figure 24

V_{WAM(min)(p-p)}

V_{WAM(max)(p-p)}

∆V_WAM(p-p)

lower voltage limit of

conversion range

(peak-to-peak value)

f

_LEVEL= 21 kHz

-

0

-

mV

upper voltage limit of

conversion range

(peak-to-peak value)

f_LEVEL= 21 kHz

800

53.3

bit resolution voltage

(peak-to-peak value)

Tone/volume control

Z_i

input impedance

measured unbalanced;

pins INAL, INAR, INAC, INBL,

INBR, INC and IND

110

160

-

kΩ

Z_o

output impedance

pins LFOUT, RFOUT, LROUT

and RROUT

-

100

+1

Ω

G_s(main)

signal gain from

−1

dB

pins INAL, INAR, INAC,

INBL, INBR, INC and

IND to LFOUT, RFOUT,

LROUT and RROUT

V_i(max)

maximum input voltage

THD = 0.2 %; G_vol= −6 dB;

pins INAL, INAR, INAC, INBL,

INBR, INC and IND

2

-

V

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

92 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

Table 111. Dynamic characteristics of the sound processor …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; treble: 10 kHz ﬁlter frequency; treble = 0 dB;

bass: 60 Hz ﬁlter frequency; bass = 0 dB; f_audio= 1 kHz; G_vol= 0 dB; G_fader= 0 dB; loudness off; standard output gain

(byte OUTPUT; bit OUTA = 0); R_L= 10 kΩ; C_L= 1 nF; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

V_o(max)

maximum output voltage G_vol= +6 dB

THD = 0.2 %

1.4

1.8

-

V

THD = 1 %; R_L= 5 kΩ;

C_L= 10 nF

G_vol= +3 dB;

OUTA = 1 (+3 dB)

THD = 0.2 %

2

2.2

-

V

THD = 0.2 %; V_CC= 8.0 V

1.6

2

1.8

R_L= 5 kΩ; C_L= 10 nF;

2.25

THD = 1 %

R_L= 5 kΩ; C_L= 10 nF;

THD = 1 %; V_CC= 8.0 V

1.7

20

1.9

-

V

f_max

frequency response (pins upper −1 dB point; referenced

INAL, INAR, INAC, INBL, to 1 kHz

INBR, INC and IND)

kHz

α_ASI

attenuation during ASI

f = 20 kHz referenced to 1 kHz

-

0.15

1

dB

CMRR

common mode rejection G_vol= 0 dB; line input

ratio

capacitance C_i= 1 µF

f_audio= 1 kHz on common

mode inputs

-

60

-

dB

f_audio= 20 Hz to 20 kHz on

common mode inputs

40

THD

total harmonic distortion conﬁgured as non-inverting,

single-ended inputs

f_audio= 20 Hz to 10 kHz;

V_i= 1 V (RMS)

-

0.02

0.03

0.1

0.2

%

f_audio= 20 Hz to 10 kHz;

V_i= 2 V (RMS);

G_vol= −10 dB

f_audio= 25 Hz;

V_i= 500 mV (RMS);

-

0.025

0.02

75

0.2

-

%

G_bass= +8 dB; G_vol= 0 dB

f_audio= 4 kHz;

V_i= 500 mV (RMS);

-

%

G_treble= +8 dB; G_vol= 0 dB

α_cs

α_S

channel separation

f_audio= 20 Hz to 20 kHz

60

dB

input isolation of one

selected source to any

other input

source impedance of unused

input: 600 Ω

f_audio= 20 Hz to 10 kHz

f_audio= 20 kHz

75

70

90

-

dB

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Table 111. Dynamic characteristics of the sound processor …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; treble: 10 kHz ﬁlter frequency; treble = 0 dB;

bass: 60 Hz ﬁlter frequency; bass = 0 dB; f_audio= 1 kHz; G_vol= 0 dB; G_fader= 0 dB; loudness off; standard output gain

(byte OUTPUT; bit OUTA = 0); R_L= 10 kΩ; C_L= 1 nF; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

V_noise(rms)

noise voltage

(RMS value)

ITU-R ARM-weighted and

20 kHz ‘brick wall’ without

input signal (source

impedance 600 Ω);

unbalanced

G

_vol= 0 dB

G_bass= +6 dB;

_treble= +6 dB; G_vol= 0 dB

-

12

24

20

35

µV

G

G_vol= +20 dB

-

71

100

10

9.5

5

100

140

18

µV

G_vol= +20 dB; balanced

G_vol= −10 dB

G_vol= −40 dB

13.5

12

outputs muted

using ‘A-weighting’ ﬁlter and

20 kHz ‘brick wall’;

6.8

10

G_vol= −20 dB; start of

loudness = −12 dB

V_offset(max)

maximum DC offset

between any two settings

(non-consecutive) on any one

audio control

-

7

-

mV

between any two settings

(non-consecutive) on volume

control; G_vol≤ +6 dB

between any two settings

(non-consecutive) on input

gain control; G_ing≤ +6 dB

PSRR

power supply ripple

rejection

V_CC(AC)= V_ripple= 200 mV

(RMS); G_vol= 0 dB

f_ripple= 20 Hz to 100 Hz

f_ripple= 100 Hz to 1 kHz

f_ripple= 1 kHz to 20 kHz

f_ripple= 500 Hz

35

50

30

-

65

70

50

70

110

-

dB

[2]

α_ct

crosstalk between bus

f_clk= 100 kHz

-

inputs and signal outputs

t_d

delay time from V_CC

applied to ﬁnal

-

12

-

ms

DC voltage at outputs

Input gain

G_ing

input gain control

step resolution

see Table 76

[3]

maximum setting

minimum setting

-

18

−10

2

-

dB

G_step(vol)

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Product data sheet

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Table 111. Dynamic characteristics of the sound processor …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; treble: 10 kHz ﬁlter frequency; treble = 0 dB;

bass: 60 Hz ﬁlter frequency; bass = 0 dB; f_audio= 1 kHz; G_vol= 0 dB; G_fader= 0 dB; loudness off; standard output gain

(byte OUTPUT; bit OUTA = 0); R_L= 10 kΩ; C_L= 1 nF; unless otherwise speciﬁed.

Symbol

Volume

G_vol

Parameter

Conditions

Min

Typ

Max

Unit

volume/balance gain

control

see Table 83

[3]

maximum setting

minimum setting

-

20

-

dB

−75

−90

-

mute attenuation;

20 Hz to 20 kHz

−80

G_step(vol)

step resolution

gain set error

-

1

-

dB

|∆G_set

|

G_vol= +20 dB to −35 dB

G_vol= −36 dB to −75 dB

0.25

0.55

-

1

3

1

3

∆G_step(vol)

|∆G_track

gain step error

|

gain tracking error

between left and right

G_vol= +20 dB to −35 dB

G_vol= −36 dB to −75 dB

0.1

0.3

Loudness; see Table 100 and Figure 39

[4]

G_bass

loudness bass control

range

-

20

4

-

dB

G_treble

loudness treble control

range

G_step

Treble

f_treble

loudness step resolution

2

treble control ﬁlter

frequency

see Figure 37; −3 dB

frequency of maximum treble

setting referenced to 100 kHz

TRF[1:0] = 00

-

8

-

kHz

dB

TRF[1:0] = 01

10

12

15

14

−14

2

-

TRF[1:0] = 10

-

TRF[1:0] = 11

-

G_treble

treble gain control

TRE[2:0] = 111; TREM = 1

TRE[2:0] = 111; TREM = 0

-

dB

G_step(treble)

∆G_step(treble)

Bass

step resolution gain

treble step error

-

dB

-

0.5

dB

f_bass

bass control ﬁlter

frequency at maximum

gain

see Figure 38

BAF[1:0] = 00

-

60

80

100

120

14

−14

2

-

Hz

dB

BAF[1:0] = 01

-

BAF[1:0] = 10

-

BAF[1:0] = 11

-

G_bass

bass gain control

BAS[3:0] = 0111; BASM = 1

BAS[3:0] = 0111; BASM = 0

-

G_step(bass)

step resolution gain

bass step error

-

∆G_step(bass)

-

0.5

TEF6901A_3

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Integrated car radio

Table 111. Dynamic characteristics of the sound processor …continued

V_CC= 8.5 V; T_amb= 25 °C; see Figure 43; all AC values are given in RMS; treble: 10 kHz ﬁlter frequency; treble = 0 dB;

bass: 60 Hz ﬁlter frequency; bass = 0 dB; f_audio= 1 kHz; G_vol= 0 dB; G_fader= 0 dB; loudness off; standard output gain

(byte OUTPUT; bit OUTA = 0); R_L= 10 kΩ; C_L= 1 nF; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

EQ_bow

equalizer bowing

f_audio= 1 kHz;

-

1.8

-

dB

V_i= 500 mV (RMS);

G

_bass= +12 dB; f_bass= 60 Hz;

_treble= +12 dB;

f_cut(treble)= 15 kHz

Fader

G_fader

fader gain control

see Table 91

maximum setting

minimum setting

output mute

-

0

-

dB

-

−64

-

−80

G_step(fader)

∆G_step(fader)

α_mute

step resolution gain

fader step error

audio mute

-

1

-

1

-

volume control: mute and

output muted (bits MULF,

MURF, MULR and MURR)

80

90

[1] The equivalent level voltage is that value of the level voltage (on pin LEVEL) which results in the same weak signal control effect (for

instance HCC roll-off) as the output value of the speciﬁed detector (USN, WAM and multipath).

V

bus(p-p)

[2] Crosstalk between bus inputs and signal outputs: α = 20log

-------------------

ct

V

o(rms)

[3] The input gain setting ING and the volume setting VOL deﬁne the overall volume. The overall range is limited to −83 dB to +28 dB. For

values > +28 dB the actual value is +28 dB. For overall values < −83 dB the actual value is mute.

[4] The maximum bass gain including BASS setting is +20 dB.

13. I²C-bus characteristics

The maximum I²C-bus communication speed is 400 kbit/s. SDA and SCL HIGH and LOW

internal thresholds are speciﬁed according to an I²C-bus voltage range from 2.5 V to 3.3 V

including I²C-bus voltage tolerances of 10 %. The bus interface tolerates also SDA and

SCL signals from a 5 V bus. Restrictions for V_ILin a 5 V application can be derived from

Table 112.

Table 112. I²C-bus parameters

Symbol

V_IL

Parameter

Conditions

Min

Typ

Max

Unit

V

LOW-level input voltage

HIGH-level input voltage

capacitance of SDA pin

capacitance of SCL pin

-

1.09

V_IH

1.56

-

V

C_SDA

C_SCL

-

4

3

6

5

pF

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Table 112. I²C-bus parameters …continued

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

t_DOR(HL)

data output reaction time

(acknowledge and read

data) HIGH-to-LOW

V_DD= 5 V; I = 3 mA;

C_b= 400 pF;

see Figure 41

-

700

863

ns

V_DD= 3.3 V;

R_p= 1.8 kΩ;

C_b= 400 pF;

see Figure 41

-

570

668

593

ns

V_DD= 2.5 V; R_p= 35 kΩ;

-

520

450

C_b= 10 pF;

see Figure 41

t_DOR(LH)

t_of

data output reaction time

(read data) LOW-to-HIGH

see Figure 41

488

-

ns

[1]

output fall time

C_b= 10 pF to 120 pF;

see Figure 42

20 + 0.1C_b10 × V_DD

[1][2]

C_b≥ 120 pF;

20 + 0.1C_b

-

250

see Figure 42

[1] Minimum value of t_of; C_b= total capacitance of one I²C-bus line [pF].

[2] Typical value of t_of; the output fall time t_of[ns] depends on the total load capacitance C_b[pF] and the I²C-bus voltage V_DD[V]:

t_of= ¹⁄₁₂× V_DD× C_b.

0.7V

DD

SDA

SCL

V

IL(max)

t

DOR(LH)

DOR(HL)

001aac124

001aab802

a. Data change from LOW to HIGH.

b. Data change from HIGH to LOW.

Fig 41. Data output reaction time of the IC

V

DD

0.7V

DD

0.3V

DD

t

of

001aab803

Fig 42. Deﬁnition of the fall time of the output signal

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Integrated car radio

14. Overall system parameters

Table 113. Overall system parameters

Symbol Parameter Conditions

Supply current in FM mode

Min

Typ

Max

Unit

I_CC

total supply current

inclusive I_V60

-

102

-

mA

Supply current in AM mode

I_CC

total supply current

inclusive I_V60

-

89

-

mA

AM overall system parameters

f_tune

AM tuning frequency

LW

144

522

2.3

-

288

1710

26.1

-

kHz

MHz

µV

MW

-

SW

-

V_sens

sensitivity voltage

f_RF= 990 kHz; m = 0.3;

50

f_mod= 1 kHz;

B_AF= 2.15 kHz;

(S+N)/N = 26 dB;

dummy aerial

15 pF/60 pF

S/N

THD

IP3

ultimate signal-to-noise

ratio

54

-

58

-

dB

total harmonic

distortion

200 µV < V_RF< 1 V;

m = 0.8; f_AF= 400 Hz

0.4

130

1

-

%

3rd-order intercept

point

∆f = 40 kHz

-

dBµV

FM overall system parameters

f_tune

FM tuning frequency

65

-

108

-

MHz

V_sens

sensitivity voltage (RF ∆f = 22.5 kHz;

2

µV

input voltage at

f_mod= 1 kHz;

(S+N)/N = 26 dB)

DEMP = 1; B = 300 Hz

to 22 kHz; measured

with 75 Ω dummy

antenna and test circuit

(S+N)/N

maximum signal plus

noise-to-noise ratio of

MPXAM output voltage

V_i= 3 mV;

∆f = 22.5 kHz;

-

60

-

dB

f_mod= 1 kHz;

DEMP = 1; B = 300 Hz

to 22 kHz; measured

with 75 Ω dummy

antenna and test circuit

THD

IP3

total harmonic

distortion

∆f = 75 kHz

-

0.5

1

-

%

3rd-order intercept

point

∆f = 400 kHz

120

dBµV

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Integrated car radio

Table 114. List of components^[1]

Symbol Component

Type

Manufacturer

C1

C2

C3

R1

L1

L2

L3

L4

X1

D1

D2

D3

D4

D5

T1

T2

F1

F2

capacitor for frequency pulling

capacitor for VCO tuning

decoupling capacitor for VCO tuning

resistor for supply V60

2.2 pF^[2]

-

270 pF

-

1 nF

-

47 Ω; 0.2 W

E543SNAS-02010

C6342A-R11

PF670CCS-A065DX

P7PSGAE-A021YBY=S

LN-G102-587

BB208

-

oscillator coil

TOKO

FM RF selectivity coil

SAGAMI

10.7 MHz IF transformer

450 kHz IF transformer

crystal 20.5 MHz

TOKO

NDK

VCO varactor diode

NXP Semiconductors

muRata

RF selectivity varactor diode

FM PIN diode

BB207

BAP64-04

AM PIN diode

BAP70AM

ElectroStatic Discharge (ESD) protection diode

AM Low Noise Ampliﬁer (LNA) JFET transistor

AM LNA cascode transistor

10.7 MHz ceramic ﬁlter

450 kHz ceramic ﬁlter

BAV99

BF862

BC847C

SFELA10M7HAA0-B0

CFWLA450KGFA-B0

muRata

[1] All low value capacitors (≤ 1 nF) must be of NP0 type for guaranteed high frequency performance.

[2] The capacitor is used to achieve a crystal frequency of 20.5 MHz together with the crystal type LN-G102-587.

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16. Package outline

QFP64: plastic quad flat package; 64 leads (lead length 1.6 mm); body 14 x 14 x 2.7 mm

SOT393-1

y

X

A

48

33

32

49

Z

E

e

A

2

H

A

E

(A )

3

E

A

1

θ

w M

p

pin 1 index

L

p

b

L

17

64

detail X

16

1

w M

v

M

A

b

p

Z

e

D

B

H

v

M

B

D

0

5

10 mm

scale

DIMENSIONS (mm are the original dimensions)

A

(1)

UNIT

A

b

c

D

E

e

H

D

H

L

v

w

y

Z

E

θ

1

2

3

p

E

p

D

max.

7^o

0^o

0.25 2.75

0.10 2.55

0.45 0.23 14.1 14.1

0.30 0.13 13.9 13.9

17.45 17.45

16.95 16.95

1.03

0.73

1.2

0.8

1.2

0.8

mm

3

0.25

0.8

1.6

0.16 0.16 0.1

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

REFERENCES

OUTLINE

EUROPEAN

PROJECTION

ISSUE DATE

VERSION

IEC

JEDEC

JEITA

00-01-19

03-02-20

SOT393-1

134E07

MS-022

Fig 44. Package outline SOT393-1 (QFP64)

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17. Soldering

This text provides a very brief insight into a complex technology. A more in-depth account

of soldering ICs can be found in Application Note AN10365 “Surface mount reﬂow

soldering description”.

17.1 Introduction to soldering

Soldering is one of the most common methods through which packages are attached to

Printed Circuit Boards (PCBs), to form electrical circuits. The soldered joint provides both

the mechanical and the electrical connection. There is no single soldering method that is

ideal for all IC packages. Wave soldering is often preferred when through-hole and

Surface Mount Devices (SMDs) are mixed on one printed wiring board; however, it is not

suitable for ﬁne pitch SMDs. Reﬂow soldering is ideal for the small pitches and high

densities that come with increased miniaturization.

17.2 Wave and reﬂow soldering

Wave soldering is a joining technology in which the joints are made by solder coming from

a standing wave of liquid solder. The wave soldering process is suitable for the following:

• Through-hole components

• Leaded or leadless SMDs, which are glued to the surface of the printed circuit board

Not all SMDs can be wave soldered. Packages with solder balls, and some leadless

packages which have solder lands underneath the body, cannot be wave soldered. Also,

leaded SMDs with leads having a pitch smaller than ~0.6 mm cannot be wave soldered,

due to an increased probability of bridging.

The reﬂow soldering process involves applying solder paste to a board, followed by

component placement and exposure to a temperature proﬁle. Leaded packages,

packages with solder balls, and leadless packages are all reﬂow solderable.

Key characteristics in both wave and reﬂow soldering are:

• Board speciﬁcations, including the board ﬁnish, solder masks and vias

• Package footprints, including solder thieves and orientation

• The moisture sensitivity level of the packages

• Package placement

• Inspection and repair

• Lead-free soldering versus PbSn soldering

17.3 Wave soldering

Key characteristics in wave soldering are:

• Process issues, such as application of adhesive and ﬂux, clinching of leads, board

transport, the solder wave parameters, and the time during which components are

exposed to the wave

• Solder bath speciﬁcations, including temperature and impurities

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17.4 Reﬂow soldering

Key characteristics in reﬂow soldering are:

• Lead-free versus SnPb soldering; note that a lead-free reﬂow process usually leads to

higher minimum peak temperatures (see Figure 45) than a PbSn process, thus

reducing the process window

• Solder paste printing issues including smearing, release, and adjusting the process

window for a mix of large and small components on one board

• Reﬂow temperature proﬁle; this proﬁle includes preheat, reﬂow (in which the board is

heated to the peak temperature) and cooling down. It is imperative that the peak

temperature is high enough for the solder to make reliable solder joints (a solder paste

characteristic). In addition, the peak temperature must be low enough that the

packages and/or boards are not damaged. The peak temperature of the package

depends on package thickness and volume and is classiﬁed in accordance with

Table 115 and 116

Table 115. SnPb eutectic process (from J-STD-020C)

Package thickness (mm) Package reﬂow temperature (°C)

Volume (mm³)

< 350

235

≥ 350

220

< 2.5

≥ 2.5

220

Table 116. Lead-free process (from J-STD-020C)

Package thickness (mm) Package reﬂow temperature (°C)

Volume (mm³)

< 350

260

350 to 2000

> 2000

260

< 1.6

260

250

245

1.6 to 2.5

> 2.5

260

245

250

245

Moisture sensitivity precautions, as indicated on the packing, must be respected at all

times.

Studies have shown that small packages reach higher temperatures during reﬂow

soldering, see Figure 45.

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maximum peak temperature

= MSL limit, damage level

temperature

minimum peak temperature

= minimum soldering temperature

peak

temperature

time

001aac844

MSL: Moisture Sensitivity Level

Fig 45. Temperature proﬁles for large and small components

For further information on temperature proﬁles, refer to Application Note AN10365

“Surface mount reﬂow soldering description”.

18. Revision history

Table 117. Revision history

Document ID

TEF6901A_3

Modiﬁcations:

Release date

20080320

Data sheet status

Change notice

Supersedes

Product data sheet

PCN20071211003

TEF6901A_2

• The format of this data sheet has been redesigned to comply with the new identity guidelines of

NXP Semiconductors.

• Legal texts have been adapted to the new company name where appropriate.

• Table 106: test mode description corrected

TEF6901A_2

Modiﬁcations:

20060710

Product data sheet

-

TEF6901A_1

• Table 22: added row 1Fh

• Section 8.2.27: changed 1Fh to 1Eh in table titles

• Section 8.2.28: added

• Table 110: AM demodulator output pin MPXAMOUT speciﬁcation: changed values of V_o

• Table 111: stereo decoder and AM path speciﬁcation: changed value of V_o(AM)

TEF6901A_1

20060202

Preliminary data sheet

-

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19. Legal information

19.1 Data sheet status

Document status^[1][2]

Product status^[3]

Development

Deﬁnition

Objective [short] data sheet

This document contains data from the objective speciﬁcation for product development.

This document contains data from the preliminary speciﬁcation.

This document contains the product speciﬁcation.

Preliminary [short] data sheet Qualiﬁcation

Product [short] data sheet Production

[1]

[2]

[3]

Please consult the most recently issued document before initiating or completing a design.

The term ‘short data sheet’ is explained in section “Deﬁnitions”.

The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status

information is available on the Internet at URL http://www.nxp.com.

damage. NXP Semiconductors accepts no liability for inclusion and/or use of

NXP Semiconductors products in such equipment or applications and

therefore such inclusion and/or use is at the customer’s own risk.

19.2 Deﬁnitions

Draft — The document is a draft version only. The content is still under

internal review and subject to formal approval, which may result in

modiﬁcations or additions. NXP Semiconductors does not give any

representations or warranties as to the accuracy or completeness of

information included herein and shall have no liability for the consequences of

use of such information.

Applications — Applications that are described herein for any of these

products are for illustrative purposes only. NXP Semiconductors makes no

representation or warranty that such applications will be suitable for the

speciﬁed use without further testing or modiﬁcation.

Limiting values — Stress above one or more limiting values (as deﬁned in

the Absolute Maximum Ratings System of IEC 60134) may cause permanent

damage to the device. Limiting values are stress ratings only and operation of

the device at these or any other conditions above those given in the

Characteristics sections of this document is not implied. Exposure to limiting

values for extended periods may affect device reliability.

Short data sheet — A short data sheet is an extract from a full data sheet

with the same product type number(s) and title. A short data sheet is intended

for quick reference only and should not be relied upon to contain detailed and

full information. For detailed and full information see the relevant full data

sheet, which is available on request via the local NXP Semiconductors sales

ofﬁce. In case of any inconsistency or conﬂict with the short data sheet, the

full data sheet shall prevail.

Terms and conditions of sale — NXP Semiconductors products are sold

subject to the general terms and conditions of commercial sale, as published

at http://www.nxp.com/proﬁle/terms, including those pertaining to warranty,

intellectual property rights infringement and limitation of liability, unless

explicitly otherwise agreed to in writing by NXP Semiconductors. In case of

any inconsistency or conﬂict between information in this document and such

terms and conditions, the latter will prevail.

19.3 Disclaimers

General — Information in this document is believed to be accurate and

reliable. However, NXP Semiconductors does not give any representations or

warranties, expressed or implied, as to the accuracy or completeness of such

information and shall have no liability for the consequences of use of such

information.

No offer to sell or license — Nothing in this document may be interpreted

or construed as an offer to sell products that is open for acceptance or the

grant, conveyance or implication of any license under any copyrights, patents

or other industrial or intellectual property rights.

Right to make changes — NXP Semiconductors reserves the right to make

changes to information published in this document, including without

limitation speciﬁcations and product descriptions, at any time and without

notice. This document supersedes and replaces all information supplied prior

to the publication hereof.

Quick reference data — The Quick reference data is an extract of the

product data given in the Limiting values and Characteristics sections of this

document, and as such is not complete, exhaustive or legally binding.

Suitability for use — NXP Semiconductors products are not designed,

authorized or warranted to be suitable for use in medical, military, aircraft,

space or life support equipment, nor in applications where failure or

malfunction of an NXP Semiconductors product can reasonably be expected

to result in personal injury, death or severe property or environmental

19.4 Trademarks

Notice: All referenced brands, product names, service names and trademarks

are the property of their respective owners.

I²C-bus — logo is a trademark of NXP B.V.

20. Contact information

For additional information, please visit: http://www.nxp.com

For sales ofﬁce addresses, send an email to: salesaddresses@nxp.com

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

105 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

21. Contents

1

2

3

4

5

General description . . . . . . . . . . . . . . . . . . . . . . 1

8.1

Read mode. . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Read mode: data byte IFCOUNTER . . . . . . . 14

Read mode: data byte LEVEL . . . . . . . . . . . . 16

Read mode: data byte USN/WAM . . . . . . . . . 17

Read mode: data byte MOD . . . . . . . . . . . . . 18

Read mode: data byte IFBW . . . . . . . . . . . . . 20

Read mode: data byte ID . . . . . . . . . . . . . . . . 20

Read mode: data byte TEMP. . . . . . . . . . . . . 21

Write mode. . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Mode and subaddress byte for write . . . . . . . 27

Write mode: data byte BANDWIDTH . . . . . . . 34

Write mode: data bytes PLLM and PLLL . . . . 36

Write mode: data byte DAA . . . . . . . . . . . . . . 36

Write mode: data byte AGC . . . . . . . . . . . . . . 37

Write mode: data byte BAND. . . . . . . . . . . . . 38

Tuning overview . . . . . . . . . . . . . . . . . . . . . . . 39

Write mode: data byte LEVELALGN . . . . . . . 40

Write mode: data byte IFCF. . . . . . . . . . . . . . 40

Write mode: data byte IFCAP . . . . . . . . . . . . 40

8.1.1

8.1.2

8.1.3

8.1.4

8.1.5

8.1.6

8.1.7

8.2

8.2.1

8.2.2

8.2.3

8.2.4

8.2.5

8.2.6

8.2.7

8.2.8

8.2.9

8.2.10

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Quick reference data . . . . . . . . . . . . . . . . . . . . . 2

Ordering information. . . . . . . . . . . . . . . . . . . . . 3

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4

6

6.1

6.2

Pinning information. . . . . . . . . . . . . . . . . . . . . . 5

Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5

7

Functional description . . . . . . . . . . . . . . . . . . . 7

FM mixer 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

FM RF AGC . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

FM mixer 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

FM IF2 channel ﬁlter. . . . . . . . . . . . . . . . . . . . . 7

FM limiter and level detection . . . . . . . . . . . . . . 8

FM demodulator . . . . . . . . . . . . . . . . . . . . . . . . 8

Center frequency and bandwidth tuning and

7.1

7.2

7.3

7.4

7.5

7.6

7.7

center frequency DAA. . . . . . . . . . . . . . . . . . . . 8

Bandwidth control algorithm . . . . . . . . . . . . . . . 8

VCO and dividers . . . . . . . . . . . . . . . . . . . . . . . 8

Crystal oscillator . . . . . . . . . . . . . . . . . . . . . . . . 8

Tuning PLL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Antenna DAA . . . . . . . . . . . . . . . . . . . . . . . . . . 9

AM RF AGC control . . . . . . . . . . . . . . . . . . . . . 9

AM mixer 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

AM IF noise blanker . . . . . . . . . . . . . . . . . . . . . 9

AM IF AGC ampliﬁer and demodulator. . . . . . . 9

AM level detection. . . . . . . . . . . . . . . . . . . . . . . 9

AM and FM level DAA. . . . . . . . . . . . . . . . . . . . 9

AM and FM IF counter . . . . . . . . . . . . . . . . . . . 9

Tuning mute . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

FM stereo decoder . . . . . . . . . . . . . . . . . . . . . 10

FM and AM AF noise blanker . . . . . . . . . . . . . 10

Fixed high cut and high cut control. . . . . . . . . 10

De-emphasis. . . . . . . . . . . . . . . . . . . . . . . . . . 10

Weak signal processing . . . . . . . . . . . . . . . . . 10

Audio step interpolation . . . . . . . . . . . . . . . . . 11

Source selector. . . . . . . . . . . . . . . . . . . . . . . . 11

VU-meter read . . . . . . . . . . . . . . . . . . . . . . . . 11

Volume and balance . . . . . . . . . . . . . . . . . . . . 11

CD compression . . . . . . . . . . . . . . . . . . . . . . . 11

Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Treble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Loudness . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Fader. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

RDS/RBDS demodulator . . . . . . . . . . . . . . . . 12

7.8

7.9

8.2.10.1 Factory alignment of bits IFCAP[3:0] . . . . . . . 41

8.2.10.2 Initialization of the radio . . . . . . . . . . . . . . . . . 41

8.2.10.3 Factory alignment of IFCF . . . . . . . . . . . . . . . 41

7.10

7.11

7.12

7.13

7.14

7.15

7.16

7.17

7.18

7.19

7.20

7.21

7.22

7.23

7.24

7.25

7.26

7.27

7.28

7.29

7.30

7.31

7.32

7.33

7.34

7.35

8.2.11

8.2.12

8.2.13

8.2.14

8.2.15

8.2.16

8.2.17

8.2.18

8.2.19

8.2.20

8.2.21

8.2.22

8.2.23

8.2.24

8.2.25

8.2.26

8.2.27

8.2.28

Write mode: data byte ACD . . . . . . . . . . . . . . 42

Write mode: data byte SENSE. . . . . . . . . . . . 42

Write mode: data byte TIMING . . . . . . . . . . . 44

Write mode: data byte SNC . . . . . . . . . . . . . . 45

Write mode: data byte HIGHCUT. . . . . . . . . . 47

Write mode: data byte SOFTMUTE . . . . . . . . 50

Write mode: data byte RADIO . . . . . . . . . . . . 54

Write mode: data byte INPUT . . . . . . . . . . . . 56

Write mode: data byte VOLUME . . . . . . . . . . 58

Write mode: data byte TREBLE. . . . . . . . . . . 65

Write mode: data byte BASS . . . . . . . . . . . . . 66

Write mode: data byte FADER . . . . . . . . . . . . 68

Write mode: data byte OUTPUT . . . . . . . . . . 68

Write mode: data byte BALANCE . . . . . . . . . 69

Write mode: data byte LOUDNESS . . . . . . . . 69

Write mode: data byte POWER . . . . . . . . . . . 72

Write mode: data bytes RESERVED . . . . . . . 72

Write mode: data byte TEST . . . . . . . . . . . . . 73

9

Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 73

Thermal characteristics . . . . . . . . . . . . . . . . . 74

Static characteristics . . . . . . . . . . . . . . . . . . . 74

10

11

12

12.1

12.2

Dynamic characteristics. . . . . . . . . . . . . . . . . 76

Dynamic characteristics of the tuner . . . . . . . 76

Dynamic characteristics of the sound

8

I²C-bus protocol. . . . . . . . . . . . . . . . . . . . . . . . 12

processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

continued >>

TEF6901A_3

Product data sheet

Rev. 03 — 20 March 2008

106 of 107

TEF6901A

NXP Semiconductors

Integrated car radio

13

14

15

16

I²C-bus characteristics . . . . . . . . . . . . . . . . . . 96

Overall system parameters. . . . . . . . . . . . . . . 98

Application information. . . . . . . . . . . . . . . . . . 99

Package outline . . . . . . . . . . . . . . . . . . . . . . . 101

17

Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Introduction to soldering . . . . . . . . . . . . . . . . 102

Wave and reﬂow soldering . . . . . . . . . . . . . . 102

Wave soldering . . . . . . . . . . . . . . . . . . . . . . . 102

Reﬂow soldering . . . . . . . . . . . . . . . . . . . . . . 103

17.1

17.2

17.3

17.4

18

Revision history. . . . . . . . . . . . . . . . . . . . . . . 104

19

Legal information. . . . . . . . . . . . . . . . . . . . . . 105

Data sheet status . . . . . . . . . . . . . . . . . . . . . 105

Deﬁnitions. . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . 105

19.1

19.2

19.3

19.4

20

21

Contact information. . . . . . . . . . . . . . . . . . . . 105

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Please be aware that important notices concerning this document and the product(s)

described herein, have been included in section ‘Legal information’.

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddresses@nxp.com

Date of release: 20 March 2008

Document identifier: TEF6901A_3


型号：	TEF6901AH/V4,557
厂家：	NXP
描述：	TEF6901A - Integrated car radio QFP 64-Pin
文件：	总107页 (文件大小：457K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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