TEA5777HN [NXP]
Low-power AM/FM stereo radio for handheld applications; 低功耗AM / FM立体声收音机为手持式应用
| 型号： | TEA5777HN |
| 厂家： | 
NXP |
| 描述： | Low-power AM/FM stereo radio for handheld applications |
| 文件： | 总48页 (文件大小：244K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IMPORTANT NOTICE
Dear customer,
As from August 2nd 2008, the wireless operations of NXP have moved to a new company,
ST-NXP Wireless.
As a result, the following changes are applicable to the attached document.
●
●
Company name - Philips Semiconductors is replaced with ST-NXP Wireless.
Copyright - the copyright notice at the bottom of each page “© Koninklijke Philips
Electronics N.V. 200x. All rights reserved”, shall now read: “© ST-NXP Wireless 200x -
All rights reserved”.
●
●
Web site - http://www.semiconductors.philips.com is replaced with
http://www.stnwireless.com
Contact information - the list of sales offices previously obtained by sending an email
to sales.addresses@www.semiconductors.philips.com, is now found at
http://www.stnwireless.com under Contacts.
If you have any questions related to the document, please contact our nearest sales office.
Thank you for your cooperation and understanding.
ST-NXP Wireless
34ꢀ.80 7IRELESS
www.stnwireless.com
TEA5777
Low-power AM/FM stereo radio for handheld applications
Rev. 01 — 11 April 2006
Product data sheet
1. General description
The TEA5777 is a BiCMOS single-chip (32-pin or 48-pin package), electronically tuned
AM/FM stereo radio circuit, with fully integrated IF selectivity and demodulation including
local synthesized oscillator, and is intended to be used in electronically tuned radio sets.
In FM mode the radio is completely alignment free and in AM mode only a minimum of
antenna input alignment is required. The radio requires a minimum number of small and
low cost external components.
The IC communicates with a microcontroller via the I2C-bus or the 3-wire bus.
2. Features
2.1 General
I High integration level of the AM and FM receiver means a very limited number of
external components are required
I On-board PLL synthesizer tuning function which includes VCOs, dividers, phase
detectors and charge pump
I FM mixer conversion for US and Europe, OIRT and Japanese band to IF
I Crystal reference frequency oscillator operating at 4 MHz
I External reference input frequency of 13 MHz (bus selectable)
I Autonomous search function
I IF counter with 1-bit output via the bus
I Silent readout of mono or stereo information and IF in-window indication
I Level detector with 4-bit level information output via the bus
I I2C-bus or 3-wire bus
I Standby mode switched via the bus
I 2 software programmable I/O ports with multiple functions
I Supply voltage range: 2.7 V to 7 V (typical 3 V)
I Low current consumption: 9.8 mA in AM mode and 13.9 mA in FM mode
2.2 AM
I Fully integrated AM RF tuning function (no external varicap required)
I High-impedance MOSFET input
I Fully integrated AM IF filters
I Fully integrated AM VCO
I Integrated image rejection mixer structure
I LW and MW reception possibility
TEA5777
Philips Semiconductors
2.3 FM
Low-power AM/FM stereo radio for handheld applications
I High input sensitivity
I Fully integrated FM IF selectivity
I Fully integrated FM demodulator (no external discriminator)
I Integrated image rejection mixer structure
I RF LC oscillator operating with low cost fixed inductors (referenced to ground)
I FM I/Q mixer for conversion of the US, Europe, Japanese and OIRT band to IF
I Fully integrated, adjustment free, stereo decoder
I Signal dependent mono or stereo blend (with on and off function)
I FM stereo readout via the bus and silent readout mode
I RDS MPX output available
I Stereo decoder can be switched off via the bus
I Integrated anti-birdy filter
3. Applications
I Portable AM/FM stereo radio
I Mini and midi receiver sets
I PC radio applications
I GSM handsets
4. Quick reference data
Table 1.
Quick reference data
VCCA = VCCD = 3 V; Tamb = 25 °C; all AC values are given in RMS.
See Figure 9 for details on the dummy inputs Vi1, Vi2 and Vi3.
Symbol Parameter
General
Conditions
Min
Typ
Max
Unit
VCCA
VCCD
ICCA
analog supply voltage
2.7
2.7
10
8
3.0
7.0
5.0
17
V
digital supply voltage
analog supply current
3.0
V
FM mode
AM mode
13.9
9.8
mA
mA
mA
11
Standby mode
via bus control
-
0.03
0.15
ICCD
digital supply current
FM mode
AM mode
0.5
0.5
-
0.8
1.5
mA
mA
mA
0.8
1.5
Standby mode
via bus control
0.13
0.25
Tamb
Tuning
VO
ambient temperature
output voltage
−10
-
-
+65
°C
tuning voltage range
on pin CPOUT
0.2
VCCA
0.3
−
V
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
2 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 1.
Quick reference data …continued
VCCA = VCCD = 3 V; Tamb = 25 °C; all AC values are given in RMS.
See Figure 9 for details on the dummy inputs Vi1, Vi2 and Vi3.
Symbol Parameter
fRF RF frequency
Conditions
FM
Min
Typ
Max
Unit
[1]
fstep = 10 kHz;
10.24
34.13
51.2
-
-
-
81.91 MHz
273.03 MHz
409.55 MHz
f
IF = 150 kHz
fstep = 33.333 kHz;
IF = 133.333 kHz
fstep = 50 kHz;
IF = 150 kHz
AM; fstep = 1 kHz;
f
f
[1]
fIF = 21 kHz
LW
128
512
-
-
511.75 kHz
MW
2047
kHz
FM performance[2]
[3]
[4]
Vi
input voltage
Vi = Vi2
RF sensitivity at
dummy input
=
-
2.7
3.5
µV
Vo(AF)
AF output voltage
measured on pins
VAFL and VAFR
fIF = 133.333 kHz
fIF = 150 kHz
70
55
-
95
75
60
120
95
-
mV
mV
dB
S/N
signal-to-noise ratio
measured on pin
MPXOUT
[6]
[8]
THD
total harmonic distortion measured on pin
MPXOUT
-
-
0.55
155
1.5
-
%
AM performance[7]
Vi
input voltage
Vi = Vi1
=
µV
RF sensitivity at
dummy input
[9]
E
electric field strength
AF output voltage
RF sensitivity with
ferroceptor
-
2.9
90
-
mV/m
mV
[10]
Vo(AF)
measured on pins
VAFL and VAFR
72
108
[11]
[12]
S/N
signal-to-noise ratio
40
-
48
1
-
dB
%
THD
total harmonic distortion
2.5
MPX stereo decoder performance
αcs channel separation
[13]
26
40
-
dB
[1] Programmable frequency range of the synthesizer referred to the antenna input.
[2] fRF = 100 MHz; ∆fFM(max) = 22.5 kHz; fmod = 1 kHz; τdeemp = 50 µs.
[3] The sensitivity at the dummy input is equivalent to EMF in a 75 Ω system.
Conditions: (S+N)/N = 26 dB; L = R; Baud(−3dB) = 300 Hz to 15 kHz, A-weighted; fIF = 133.333 kHz.
[4] Vi2 = 1 mV; ∆fFM(max) = 22.5 kHz.
[5] Vi2 = 1 mV; L = R; Baud(−3dB) = 300 Hz to 15 kHz, A-weighted; fIF = 133.333 kHz.
[6] Vi2 = 1 mV; ∆f = 75 kHz; with external τdeemp = 50 µs; Baud(−3dB) limited to 15 kHz.
[7] fRF = 918 kHz; m = 0.3; fmod = 1 kHz; τdeemp = 75 µs
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
3 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
[8] Conditions: (S+N)/N = 26 dB; m = 0.3; A-weighting filter.
[9] With ferroceptor C8E-A0424 TOKO Inc; (S+N)/N = 26 dB; A-weighting filter.
[10] Vi1 = 5 mV.
[11] Vi1 = 5 mV; A-weighting filter.
[12] Vi1 = 5 mV; m = 0.8; bit AGCRF = 0 (slow AGC RF); bit AGCIF = 0 (slow AGC IF); Baud(−3dB) limited to
15 kHz.
[13] Vi3 = 300 mV; fmod = 1 kHz; Vpilot = 30 mV; R = 1 and L = 0 or R = 0 and L = 1; VTMUTE = 1 V;
fIF = 133.333 kHz; Baud(−3dB) limited to 15 kHz.
5. Ordering information
Table 2.
Ordering information
Type number
Package
Name
Description
Version
TEA5777HN
HVQFN48
plastic thermal enhanced very thin quad flat
package; no leads; 48 terminals;
body 7 × 7 × 0.85 mm
SOT619-1
TEA5777HL
LQFP32
plastic low profile quad flat package; 32 leads;
SOT358-1
body 7 × 7 × 1.4 mm
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
4 of 47
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xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxx x x
TMUTE
22 (15)
MPXOUT
MPXIN
33 (22)
36 (24)
TEA5777HN
(TEA5777HL)
AGC
IF COUNTER
bus
FM antenna
RFIN1
43 (28)
44 (29)
45 (30)
80 kHz
GNDRF
STEREO DECODER
REFERENCE
LIMITER
DEMODULATOR
bus
LNA
I/Q MIXER
IF FILTER
LPF
RFIN2
4 (3)
3 (2)
34
(23)
31
VAFR
VAFL
÷2
N1
VCOTANK2
VCO
SLOW LEVEL
ADC (4-bit)
MATRIX
MUX
MUTE
SDS
bus
(21)
VCOTANK1
bus
bus
bus
AM/FM
selection
5 (4)
bus
PILOT
DETECTOR
GNDVCO_AMRF
9
MASTER FILTER
SWPORT1
(6)
bus
PILDET/
10
(7)
AMRFAGC 46
PROGRAMMABLE
PHASE
DETECTOR
REFERENCE
DIVIDER
RF AGC
AM VCO
SWPORT2/EXTIN
DIVIDER
(31)
bus
bus
bus
16
XTAL1
4 MHz
XTAL2
(11)
7 (5)
AMRFIN
AM
DETECTOR
CHARGE
PUMP
CRYSTAL
OSCILLATOR
14
(9)
I/Q MIXER
IF FILTER
IF AGC
bus
AM antenna
bus
bus
bus
2
38
÷ 8 or ÷ 32
N1
I
C-BUS AND
POWER SUPPLY
BUSMODE
3-WIRE BUS
(25)
C-BANK
bus
47
(32)
40
(26)
30
(20)
26
(17)
23
(16)
11 41
(8) (27) (19) (10)
29
15
20
(14)
19
(13)
18
(12)
bus
27 (18)
2 (1)
CPOUT
AGC2CAP
001aab435
bus
control
supply voltage
Pin numbers in parenthesis apply to TEA5777HL.
Fig 1. Block diagram
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
7. Pinning information
7.1 Pinning
terminal 1
index area
1
2
36
35
34
33
32
31
30
29
28
27
26
25
n.c.
MPXOUT
n.c.
CPOUT
VCOTANK1
VCOTANK2
GNDVCO_AMRF
n.c.
3
VAFR
MPXIN
n.c.
4
5
6
VAFL
V25DIG
GNDA
n.c.
TEA5777HN
7
AMRFIN
8
n.c.
9
SWPORT1
SWPORT2/EXTIN
10
11
12
AGC2CAP
VREF
n.c.
V
CCD
n.c.
001aab434
Transparent top view
Fig 2. Pin configuration HVQFN48
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
6 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
CPOUT
VCOTANK1
MPXOUT
VAFR
VCOTANK2
MPXIN
VAFL
GNDVCO_AMRF
AMRFIN
TEA5777HL
V25DIG
GNDA
SWPORT1
SWPORT2/EXTIN
AGC2CAP
VREF
V
CCD
001aab432
Fig 3. Pin configuration LQFP32
7.2 Pin description
Table 3.
Pin description
Symbol
Pin
Description
HVQFN48 LQFP32
n.c.
1
2
3
4
5
6
7
8
9
10
-
not connected
CPOUT
1
2
3
4
-
tuning current output
VCOTANK1
VCOTANK2
GNDVCO_AMRF
n.c.
parallel tuned FM oscillator to ground output 1
parallel tuned FM oscillator to ground output 2
FM VCO and AM RF input ground
not connected
AMRFIN
5
-
AM RF input (FET input)
n.c.
not connected
SWPORT1
SWPORT2/EXTIN
6
7
programmable output and input port 1
programmable output and input port 2 or external
reference frequency input
VCCD
n.c.
11
12
13
14
15
16
17
8
digital supply voltage
not connected
not connected
crystal input 2
digital ground
-
n.c.
-
XTAL2
GNDD
XTAL1
n.c.
9
10
11
-
crystal input 1
not connected
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
7 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 3.
Symbol
Pin description …continued
Pin
Description
HVQFN48 LQFP32
CLOCK
DATA
18
19
20
21
22
23
24
25
26
27
28
29
30
12
13
14
-
I2C-bus and 3-wire bus clock input
I2C-bus and 3-wire bus data input and output
3-wire bus write and read input
not connected
WRITE_READ
n.c.
TMUTE
VCCA
15
16
-
field strength indicator capacitor connection
analog supply voltage
n.c.
not connected
n.c.
-
not connected
VREF
AGC2CAP
n.c.
17
18
-
1.25 V stabilized reference voltage output
AM IF AGC capacitor connection
not connected
GNDA
V25DIG
19
20
analog ground
internal stabilized supply voltage (digital part)
output
VAFL
n.c.
31
32
33
34
35
36
37
38
39
40
21
-
left channel output
not connected
MPXIN
VAFR
n.c.
22
23
-
stereo decoder input
right channel output
not connected
MPXOUT
n.c.
24
-
FM MPX output
not connected
BUSMODE
n.c.
25
-
bus mode selection input
not connected
V25IF
26
internal stabilized supply voltage (IF, demodulator
and integrated birdy filter) output
GNDIF
41
27
ground of IF, demodulator and integrated birdy
filter
n.c.
42
43
44
45
-
not connected
RFIN1
GNDRF
RFIN2
28
29
30
31
FM RF antenna input 1
FM RF ground
FM RF antenna input 2
PILDET/AMRFAGC 46
stereo decoder pilot detector filter input or AM RF
AGC capacitor connection
VAMLNA
n.c.
47
48
32
-
internal stabilized supply voltage (AM front end)
output
not connected
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
8 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
8. Functional description
The TEA5777 is an integrated AM/FM stereo radio circuit with very high integration level
including digital tuning and control functions.
The IC communicates with a microcontroller via the I2C-bus or the 3-wire bus interface
and provides the following functions:
• AM single conversion receiver with integrated image rejection for fIF = 21 kHz
• FM single conversion receiver with integrated image rejection for fIF = 133.333 kHz or
150 kHz (software selectable)
• FM stereo decoder with signal dependent stereo effect
The AM circuit incorporates:
• Integrated antenna tuning function
• Integrated I/Q IF channel
• On-chip image reject mixer structure
• A fully integrated AM VCO with fVCO = 8 × (fRF + fIF)
• Software selectable high-side or low-side oscillator injection
• A fully integrated AM detector
The FM circuit incorporates:
• Integrated I/Q IF channel
• On-chip image reject mixer structure
• External RF VCO running at fVCO = 2 × (fRF ± fIF)
• Software selectable high-side or low-side oscillator injection
• A fully integrated demodulator
• Japan band possibility
The stereo decoder incorporates:
• A 1.52 MHz VCO, that needs no external adjustment, which can lock to the 19 kHz
stereo pilot tone by means of a PLL system; the sub-carrier frequencies of 19 kHz,
38 kHz and others are regenerated from the VCO output
• Integrated 50 µs or 75 µs (switchable) de-emphasis
• Signal Dependent Stereo (SDS) function can be switched off via the bus interface
• Stereo decoder can be switched off in order to save power
Tuning function:
• The tuning synthesizer is on-chip with the radio and utilizes a PLL system for tuning
and an IF counter has been added for search-stop detection
• Tuning to a wanted input signal can be achieved by preset tuning or search tuning. For
the latter the IC has a built-in auto search function which reduces the load of the
microcontroller
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
9 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Bus communication:
• Bus communication takes place via the I2C-bus or the 3-wire bus protocol. Selection
of the bus mode is done by hardware programming via pin BUSMODE
• 4-bit ADC level information, 1-bit IF counter and mono or stereo indication (in FM
mode) can be read via the bus. Alternatively, the mono or stereo and the IF in-window
indication can be obtained via silent readout via the bus lines CLOCK and DATA
8.1 AM radio part
8.1.1 AM RF amplifier
The AM input pin AMRFIN has a (selectable) high-impedance input. The input is intended
to be connected to the top of a tuned circuit. The input impedance is determined by the
LNA gain (bit LNA) and the value of the LNA feedback resistor (bit RFB).
For large RF input signals, the RF AGC reduces the input signal level to the AM front end
in order to prevent overloading. The required AM RF AGC time constant is created by
means of an internal current source and the capacitor connected to pin
PILDET/AMRFAGC. During search operation the response time of this RF AGC circuit
can be speeded up via the bus control by bit AGCRF.
8.1.2 Tuning AM antenna circuit
The tuning capacitor for the AM antenna circuit has been integrated by means of a
capacitor bank (C-bank) and the tuning frequency can be programmed in discrete steps
via the bus. No external varactor diode is required. In order to match the capacitor bank to
the external AM antenna coil, a provision has been made to electronically align the IC to
the AM antenna. For this bit CALLIGN has to be set to logic 1 and the corresponding bits
C[6:0] have to be programmed. After this alignment bit CALLIGN should be set to logic 0
again to freeze the alignment capacitor value and to enable the control over the main
capacitor bank again.
For more details on the alignment, see Section 13.1 and the application note.
For LW mode an external capacitor needs to be added in parallel to the LW coil.
8.1.3 AM I/Q mixer
AM quadrature mixers, in an orthogonal architecture, convert AM RF signals to the
internal fIF = 21 kHz. The mixer architecture provides inherent image rejection.
8.1.4 AM VCO
The fully integrated VCO provides the local oscillator signals for the AM quadrature
mixers. No external components are required.
The internal VCO frequency ranges from 4 MHz to 14 MHz and the proper divider ratio is
chosen by selecting the MW or LW band via the bus control bit MWLW.
Programming of the VCO is done:
• For MW: fVCO = 8 × (fRF ± fIF)
• For LW: fVCO = 32 × (fRF ± fIF)
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
10 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
High-side injection or low-side injection of the VCO can be chosen:
• High-side injection: local oscillator frequency at mixer input is higher than RF input
signal frequency.
• Low-side injection: local oscillator frequency at mixer input is lower than RF input
signal frequency.
8.1.5 AM IF filter
The AM circuit incorporates an I and Q orthogonal channel path with fully integrated
polyphase IF filter. All AM IF filtering is done inside the IC, therefore no external filter
components are required. The center frequency of the filter is 21 kHz and the −3 dB
bandwidth amounts to 8 kHz.
8.1.6 AM IF amplification and AM detection
The IF AGC controls the IF amplification and a fully integrated AM detector converts the
AM IF signal into audio. In AM mode the capacitor connected to pin AGC2CAP is used for
IF AGC filtering. The value of this capacitor is a compromise between AGC speed and
THD. In order to achieve an acceptable THD in normal mode and an acceptable AGC
response during e.g. a search action, the time constant can be switched to a value
15 times lower by means of bit AGCIF. In autonomous search mode (bit SEARCH = 1) the
time constant is switched automatically to the lowest value.
8.2 FM radio part
8.2.1 Low noise RF amplifier
The FM circuit incorporates a wideband input. The LNA input impedance together with the
LC RF input circuit defines a low Q, FM band-pass filter. The input filter is also used for
impedance matching between the source impedance and the 300 Ω LNA input
impedance between pins RFIN1 and RFIN2. An RF AGC circuit prevents the mixer and IF
filter from overdrive conditions.
8.2.2 FM I/Q mixer
FM quadrature mixers, in an orthogonal I/Q architecture, convert FM RF signals to the
internal fIF = 133.333 kHz or 150 kHz. The mixer architecture provides inherent image
rejection. Whether fIF = 133.333 kHz or 150 kHz is chosen depends on bits FREF[1:0].
For choosing the best signal conditions with respect to the influence of the image signals,
high-side or low-side injection can be selected:
• High-side injection: local oscillator frequency at mixer input is higher than RF input
signal frequency.
• Low-side injection: local oscillator frequency at mixer input is lower than RF input
signal frequency.
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
11 of 47
TEA5777
Philips Semiconductors
8.2.3 FM VCO
Low-power AM/FM stereo radio for handheld applications
The symmetrical LC, varactor tuned VCO provides the oscillator signals for the FM
quadrature mixers (pins VCOTANK1 and VCOTANK2). The VCO operates at double the
RF frequency fVCO = 2 × (fRF ± fIF) and has an internal AGC control circuit in order to
guarantee good start-up behavior and carrier-to-noise ratio (C/N) even with low Q coils
(Q > 40). High-side injection (+fIF) or low-side injection (−fIF) of the VCO can be chosen
via the bus control.
8.2.4 FM IF filter
The FM signal path incorporates an I and Q orthogonal FM channel with fully integrated
polyphase IF filter. All FM IF filtering is done inside the IC, therefore no external filter
components are required. The center frequency of the filter matches the chosen IF
(fIF = 133.333 kHz or 150 kHz) and has a −3 dB bandwidth of approximately 110 kHz.
8.2.5 FM demodulator
The FM demodulator is fully integrated and needs no external components. In order to
remove undesired IF and or RF input related components, a 80 kHz low-pass filter has
been integrated.
8.3 Stereo decoder
8.3.1 MPX decoder
The PLL stereo decoder is alignment free and incorporates a fully integrated PLL loop
filter. The stereo decoder can be switched to forced mono via bus control bit FOMO.
8.3.2 Signal strength depending mono/stereo blend
When decreasing the RF input level, the MPX decoder blends from stereo to mono to limit
the output noise. The control signal is obtained from the low-pass filtered level information
at pin TMUTE. This blend function, called SDS, can also be switched off via bus control bit
SDSOFF and a RF level related sudden change from stereo to mono transition will result.
8.3.3 Pilot detector
A pilot detector, with external filter capacitor at pin PILDET/AMRFAGC, is used to detect
the presence of a stereo signal. Mono or stereo reception can be read via the bus control,
but can also be passed to pin DATA in the Dbus mode (see Section 9). For this option, bit
DBUS has to be programmed. In this case, no bus action is required (silent readout) to
read the status of the pilot detector and the information is continuously available.
8.3.4 De-emphasis
In FM mode, the de-emphasis is switchable between 50 µs and 75 µs (bit DEEM). In AM
mode, bit DEEM selects a low-pass filter with the time constant 50 µs or 75 µs in order to
limit the noise bandwidth.
8.4 Tuning function
The tuning concept of the TEA5777 is based on a PLL and programming of the required
frequency takes place via the bus control.
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
12 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
8.4.1 Reference frequency generation
The internally required reference frequency can be obtained from the integrated crystal
oscillator or from an externally applied reference signal of 13 MHz. Selection of the
reference signal (internal or external) takes place via the bus control.
The reference frequency signals are used for:
• Reference frequency divider for the PLL synthesizer
• Center frequency adjustment of the IF filters
• Free running frequency adjustment of the stereo decoder VCO
• Clocking the stereo decoder state machine
• Timing of the IF counter
• Sampling the RF level for the level ADC
8.4.2 Crystal oscillator
The symmetrical crystal oscillator can operate with a 4 MHz clock crystal. An amplitude
control function is implemented in order to minimize the higher harmonic component
signal levels.
8.4.3 IF counter
An IF counter has been added for search-stop detection (optional, i.e. can be enabled or
disabled via bit IFCE). The IF counter result is a 1-bit output and in-window yes or no and
available via bus control. In order to minimize the interference, the IF counter can be
disabled via the bus control bit IFCE. In both AM and FM modes, two IF window settings
can be chosen by bit IFW.
When Dbus mode is activated and bit IFCE = 1, the IF counter result is available at pin
DATA (see Table 8). In this mode, the IF counter ready flag (bit IFCRDY) is put on pin
DATA. Disabling bit IFCE, while Dbus mode is active, puts the mono or stereo indication
information on pin DATA. In this case no bus actions are required to read the status of the
IF counter (silent readout).
Remark: For updating the IF counter information a short pulse on pin WRITE_READ
should be generated.
8.4.4 Automatic search operation
The IC can be programmed to an autonomous search mode operation. In this mode, the
IC will search for a new station without the need of communication to the microcontroller.
To enable this mode, bit SEARCH has to be set. Under control of bit UPDWN, search stop
level bits SLEV[1:0] and search step control bits STEP[1:0], various search modes can be
selected (see Section 9).
Before this mode can be activated, first the upper and lower band limits have to be
programmed. Bit PROGBLIM = 1 and bit UPDWN = 1 programs the upper band limit,
while bit PROGBLIM = 1 and bit UPDWN = 0 programs the lower band limit. Bit SFOUND
signals whether a new station is found. Bit BLIM signals whether a band limit is reached.
In AM mode, bit AMDELAY selects either a 40 ms or 80 ms delay time. The best value to
be selected depends on the realized AM IF AGC response (see Section 8.1.6).
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Low-power AM/FM stereo radio for handheld applications
8.5 RF level information (RSSI)
For processing Receiver Signal Strength Information (RSSI) in both AM and FM modes,
the internal level voltage is analog-to-digital converted with a 4-bit ADC. The level
information can be read by bits LEV[3:0] in the read register. In autonomous search mode,
bits LEV[3:0] still indicate some momentary level information, however the data is
dependent upon the readout timing and can be considered to have no relevance to the
user. The ADC full-scale goes from 0.25 V to 0.95 V. In AM mode, the level information
covers the ADC full-scale. In FM mode, the level information does not fully cover the ADC
full-scale.
8.6 Software programmable ports
Two software programmable ports can be addressed via the bus control. These ports can
be independently switched to multiple functions, knowing:
• Outputs: SWPORT1 and SWPORT2 can act as output ports which are capable of
sourcing and sinking approximately 9 mA.
• Inputs: SWPORT1 and SWPORT2 can act as input ports of which the status can be
read out via bus control.
Remark: Port SWPORT2 can be switched as input for the 13 MHz reference signal. In
that case, no other functions can be programmed for this port.
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Low-power AM/FM stereo radio for handheld applications
9. Control functions via I2C-bus and 3-wire bus
9.1 Bus interface
Via the bus interface a couple of main blocks are controlled:
• Tuning system
• Autonomous search
• AM capacitor bank (C-bank control)
• IF counter
• 4-bit level ADC
• Stereo decoder
• Mute and de-emphasis
• SWPORT1 and SWPORT2 outputs (I/O port control)
BUS INTERFACE
3-WIRE BUS OR
I C-BUS
INTERFACE
C-BANK
CONTROL
2
MUTE
I/O PORT
DE-EMPHASIS
CONTROL
STEREO
DECODER
TUNING
SYSTEM
AUTONOMOUS
SEARCH
IF COUNTER
LEVEL ADC
001aab436
Fig 4. Bus interface
9.2 Bus protocol
The TEA5777 bus interface is a combination of an I2C-bus and a 3-wire-bus. The bus
mode is determined by the bus mode input pin BUSMODE which will be connected to
ground or to VCCD
:
• Pin BUSMODE = HIGH enables the 3-wire mode
• Pin BUSMODE = LOW enables I2C-bus mode
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Low-power AM/FM stereo radio for handheld applications
9.3 I2C-bus mode
The I2C-bus interface is based on ‘The I2C-bus specification’ version 2.1 January 2000.
In the I2C-bus mode, only pins CLOCK and DATA are used for data transfer. The level on
pin WRITE_READ is don’t care.
Data transfer to the bus interface is byte oriented and no sub-addressing is used.
The data transfer consists of a START condition, device address byte plus R/W
Data is written at the rising edge and data is clocked out at the falling edge. The I2C-bus
can operate at a maximum clock frequency of 400 kHz.
The I2C-bus device address of the TEA5777 is: 110 0000 (7 bits).
Table 4.
Condition
START
I2C-bus data transfer
Byte
Description
start by master
Address byte
Byte 1
device address + R/W bit
acknowledge by slave
data byte 1
ACK
ACK
ACK
acknowledge by slave
data byte 2
Byte 2
acknowledge by slave
data byte n
Byte n
ACK
acknowledge by slave
stop by master
STOP
9.3.1 Write mode
The bus interface has a total of 6 write registers. Before data can be written to these
registers, the I2C-bus device address byte has to be written to the IC
After the bus interface (slave) recognizes a start of transmission, the address byte is
written to the bus. If the address is equal to the internal address of the bus interface, an
acknowledge is given to the master and data can be written to the write registers.
If the bus address does not match, no acknowledge is given and the internal bus interface
clock is disabled until a next start is detected.
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Low-power AM/FM stereo radio for handheld applications
Table 5.
Condition
START
I2C-bus write mode
Byte
Description
start by master
1100 0000 (bit R/W = 0)
acknowledge by slave
data byte 1
Address byte
Byte 1
ACK
ACK
ACK
acknowledge by slave
data byte 2
Byte 2
acknowledge by slave
:
:
Byte 6
data byte 6
ACK
acknowledge by slave
stop by master
STOP
9.3.2 Read mode
The bus interface has a total of 3 read bytes. If a start of transmission is detected and the
I2C-bus device address matches with the internal address, an acknowledge is given and
the data is clocked out. If not, the internal clock is disabled and the data output will be
logic 1s (FFh).
Table 6.
Condition
START
I2C-bus read mode
Byte
Description
start by master
Address byte
Byte 1
1100 0001 (bit R/W = 1)
acknowledge by slave
data byte 1
ACK
ACK
ACK
STOP
acknowledge by slave
data byte 2
Byte 2
acknowledge by slave
data byte 3
Byte 3
stop by master
9.3.3 Dbus function in I2C-bus mode (silent readout)
The Dbus function becomes active when bit DBUS = 1 and when the maximum available
bytes are written in the write mode or when the maximum available bytes are read in the
read mode. At every start of an I2C-bus data transfer, the Dbus mode is deactivated.
When the Dbus mode is active in I2C-bus mode, pin WRITE_READ becomes an
open-collector output (pull-up resistor required). Depending on the setting of bit IFCE and
bit SEARCH, the following data will be available at pin WRITE_READ:
• Mono or stereo indication flag
• IFC counter flag
• SFOUND flag or BLIM reached flag
In Table 7 the data at pin WRITE_READ is depicted as a function of bits DBUS, SEARCH
and IFCE.
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Low-power AM/FM stereo radio for handheld applications
Table 7.
Definition pin WRITE_READ functionality in I2C-bus Dbus mode
Bit
Pin WRITE_READ
Output signal
3-state
DBUS
SEARCH IFCE
Status[1]
0
1
X
0
0
1
X
0
1
X
not applicable
mono or stereo flag
IFCRDY flag
H = stereo, L = mono
H = IF counter ready
SFOUND or BLIM flag H = station found or band limit reached
[1] H = HIGH-level output voltage
L = LOW-level output voltage
9.4 3-wire bus mode
For the 3-wire bus mode pin BUSMODE = HIGH, i.e. connected to VCCA. The pins
CLOCK, DATA and WRITE_READ are used to communicate with the external hardware
(microcontroller or PC). The bus operates at a maximum clock of 1 MHz.
The selected mode (read or write mode) is determined by the rising or falling edge of
signal WRITE_READ.
9.4.1 Write mode
At the rising edge of signal WRITE_READ the bus interface is set to the write mode. At
every rising edge of the clock input (CLOCK) the data is clocked in. Signal DATA has to be
stable before it can be clocked in.
50 %
WRITE_READ
t
w(W)
t
su(clk)
CLOCK
50 %
50 %
su(D)
t
h(D)
t
valid data
50 %
DATA
001aae434
Fig 5. 3-wire bus write data
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9.4.2 Read mode
Low-power AM/FM stereo radio for handheld applications
At the falling edge of signal WRITE_READ the bus interface is set to the read mode. Data
is clocked out on every falling edge of the input clock. In the read mode, pin DATA
becomes an open-collector output and an external pull-up resistor is required.
50 %
WRITE_READ
t
w(R)
t
t
clk(H)
su(clk)
CLOCK
50 %
50 %
t
clk(L)
t
t
h(Q)
d(Q)
50 %
50 %
DATA
001aae435
Fig 6. 3-wire bus read data
9.4.3 Dbus function in 3-wire mode (silent readout)
Bus pins CLOCK and DATA are bidirectional and act as inputs when bit DBUS = 0, but are
open-collector outputs when bit DBUS = 1. External pull-up resistors are required in this
case.
In Dbus mode, pins CLOCK and DATA are used for output data and pin WRITE_READ is
used as an input.
With a rising edge (write mode) or falling edge (read mode) of signal WRITE_READ the
Dbus mode is deactivated and a transmission is started.
The Dbus mode is activated with bit DBUS = 1 and after transfer of all 6 data bytes in the
write mode or all 3 data bytes in the read mode.
Data on pins CLOCK and DATA in the Dbus mode is given in Table 8.
Table 8.
Bit
CLOCK and DATA lines in Dbus-mode
Pin CLOCK
Pin DATA
Signal
input
DBUS SEARCH IFCE Signal
Status[1]
Status[1]
0
1
X
0
X
0
1
X
input
-
-
IFC flag H = IF in-window mono/stereo flag H = stereo, L = mono
IFC flag H = IF in-window IFCRDY flag
H = IF counter ready
1
1
SFOUND H = station found BLIM flag
flag
H = band limit
reached
[1] H = HIGH-level output voltage
L = LOW-level output voltage
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Low-power AM/FM stereo radio for handheld applications
9.5 Data transfer in I2C-bus and 3-wire mode
In the write mode, the data transfer between the TEA5777 (slave) and the microcontroller
(master) is byte oriented.
In the read mode, the data transfer from slave to master is bit oriented.
Remark: For writing to the PLL, it is necessary to write both the first and second data
byte. Only after completing the data transfer of data byte 2 is the PLL word copied into the
PLL register.
9.5.1 Register definition in write mode
Table 9.
Survey of bit names in FM write mode
Bits marked with * are common for FM and AM mode.
Bits
7
6
AM/FM*
PLL6
5
4
3
2
1
PLL9
PLL1
-
0
PLL8
PLL0
INTEXT*
-
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
MUTE*
PLL7
FREF1
P1*
STB*
PLL5
IFCE*
PEN1*
PLL12
PLL4
IFW*
PLL11
PLL3
HILO*
-
PLL10
PLL2
FREF0
P0*
DBUS*
CHP0*
PEN0*
DEEM*
FOMO
SEARCH*
SDSOFF
DOFF
-
-
-
-
-
-
PROGBLIM* UPDWN* SLEV1*
SLEV0*
STEP1
STEP0*
9.5.1.1 FM write mode
Table 10. FM write mode - data byte 1
Bits marked with * are common for FM and AM mode.
Bit Symbol Description
7 (MSB) MUTE*
audio mute: 0 = audio not muted; 1 = audio muted
AM/FM selection: 0 = FM; 1 = AM
6
AM/FM*
STBY*
PLL12
PLL11
PLL10
PLL9
5
operating mode: 0 = operating; 1 = standby
setting of synthesizer programmable counter
4
3
2
1
0 (LSB)
PLL8
Table 11. FM write mode - data byte 2
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) PLL7
setting of synthesizer programmable counter
6
PLL6
PLL5
PLL4
PLL3
PLL2
PLL1
PLL0
5
4
3
2
1
0 (LSB)
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Low-power AM/FM stereo radio for handheld applications
Table 12. FM write mode - data byte 3
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) FREF1
IF and reference frequency control: see Table 13
6
FREF0
IFCE*
IFW*
5
IF counter: 0 = not enabled; 1 = enabled
IF window: 0 = 10 kHz; 1 = 20 kHz
4
3
HILO*
DBUS*
-
VCO injection mode: 0 = low-side; 1 = high-side
Dbus mode selection: 0 = off; 1 = on
no function
2
1
0 (LSB)
INTEXT*
reference frequency source select: 0 = external; 1 = internal
Table 13. FM IF and reference frequency control
Bits FREF[1:0 fref(VCO)
fref(RF)
FM mode
VCO step
reference frequency
frequency (kHz)
100
referred to RF input (kHz)
00
01
10
11
50
fIF = 150 kHz
20
10
fIF = 150 kHz for East Europe
fIF = 133.333 kHz
fIF = 150 kHz
66.666
100
33.333
50
Table 14. FM write mode - data byte 4
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) P1*
I/O port control: see Table 28 and Table 29
6
P0*
5
PEN1*
PEN0*
-
4
3
no function
2
CHP0*
DEEM*
-
charge pump current: 0 = large; 1 = small
de-emphasis: 0 = 50 µs; 1 = 75 µs
no function
1
0 (LSB)
Table 15. FM write mode - data byte 5
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) FOMO
stereo reception: 0 = allow; 1 = force mono
stereo decoder blend function: 0 = on; 1 = off
stereo decoder: 0 = on; 1 = standby
6
SDSOFF
5
DOFF
4
-
-
-
-
-
3
2
1
0 (LSB)
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Low-power AM/FM stereo radio for handheld applications
Table 16. FM write mode - data byte 6
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) SEARCH*
search mode: 0 = disabled; 1 = enabled
6
5
PROGBLIM*
UPDWN*
copy word: 0 = no copy; 1 = copy PLL word to BLIM register
if bit PROGBLIM = 0: 0 = down search; 1 = up search
if bit PROGBLIM = 1: 0 = lower band-limit; 1 = upper band-limit
search level settings: see Table 17
4
SLEV1*
SLEV0*
STEP1
STEP0*
-
3
2
search steps FM: see Table 18
no function
1
0 (LSB)
Table 17. Search level settings
Bits SLEV[1:0]
RF level (FM)
5 µV
ADC[3:0] level bits
00
01
10
11
0010
0100
0110
1001
10 µV
30 µV
60 µV
Table 18. Search steps FM
Programmable steps
FM
100 kHz reference 66 kHz reference 20 kHz reference
Bits STEP[1:0]
Step size
00
01
10
11
1
2
3
4
50
33.333
66.666
100
10
20
30
40
100
150
200
133.333
9.5.1.2 AM write mode
Table 19. Survey of bit names in AM write mode
Bits marked with * are common for FM and AM mode.
Bits
7
MUTE*
PLL5
6
5
4
3
2
1
0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
AM/FM*
PLL4
LNA
STB*
PLL3
IFCE*
PEN1*
PLL10
PLL2
PLL9
PLL1
HILO*
-
PLL8
PLL0
DBUS*
CHP0*
PLL7
AGCRF
PEAK
PLL6
AGCIF
INTEXT*
RFB
MWLW
P1*
IFW*
P0*
PEN0*
DEEM*
CALLIGN
SEARCH*
C6
C5
C4
C3
SLEV0*
C2
C1
C0
PROGBLIM* UPDWN* SLEV1*
AMDELAY STEP0*
-
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Low-power AM/FM stereo radio for handheld applications
Table 20. AM write mode - data byte 1
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) MUTE*
audio mute: 0 = audio not muted; 1 = audio muted
AM/FM selection: 0 = FM; 1 = AM
operating mode: 0 = operating; 1 = standby
setting of synthesizer programmable counter
6
AM/FM*
STBY*
PLL10
PLL9
5
4
3
2
PLL8
1
PLL7
0 (LSB)
PLL6
Table 21. AM write mode - data byte 2
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) PLL5
setting of synthesizer programmable counter
6
PLL4
5
PLL3
4
PLL2
3
PLL1
2
PLL0
1
AGCRF
AGCIF
RF AGC response: 0 = slow; 1 = fast
IF AGC response: 0 = slow; 1 = fast
0 (LSB)
Table 22. AM write mode - data byte 3
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) MWLW
band select: 1 = MW; 0 = LW
6
LNA
LNA gain: 0 = 5 ×; 1 = 10 ×
5
IFCE*
IFW*
IF counter: 0 = not enabled; 1 = enabled
IF window: 0 = 2 kHz; 1 = 4 kHz
4
3
HILO*
DBUS*
PEAK
INTEXT*
VCO injection mode: 0 = low-side; 1 = high-side
Dbus mode selection: 0 = off; 1 = on
RFAGC speed-up: 0 = off; 1 = fast attack, normal decay
reference frequency source select: 0 = external; 1 = internal
2
1
0 (LSB)
Table 23. AM write mode - data byte 4
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) P1*
I/O port control: see Table 28 and Table 29
6
5
4
3
P0*
PEN1*
PEN0*
-
no function
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Low-power AM/FM stereo radio for handheld applications
Table 23. AM write mode - data byte 4 …continued
Bits marked with * are common for FM and AM mode.
Bit
Symbol
CHP0*
DEEM*
RFB
Description
2
charge pump current: 0 = large; 1 = small
de-emphasis: 0 = 50 µs; 1 = 75 µs
LNA feedback resistor: 0 = 1 MΩ; 1 = 2.2 MΩ
1
0 (LSB)
Table 24. AM write mode - data byte 5
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) CALLIGN
selection bit: 0 = C[6:0] sets C-bank; 1 = C[6:0] sets C-align
C[6:0] sets C-bank or C-align word depending upon bit CALLIGN:
C-align: C[6:0] should be between 0 and 128 (decimal)
C-bank: C[6:0] should be between 0 and 122 (decimal)
6
C6
C5
C4
C3
C2
C1
C0
5
4
3
2
1
0 (LSB)
Table 25. AM write mode - data byte 6
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) SEARCH*
search mode: 0 = disabled; 1 = enabled
6
5
PROGBLIM*
UPDWN*
copy word: 0 = no copy; 1 = copy PLL word to BLIM register
if bit PROGBLIM = 0: 0 = down search; 1 = up search
if bit PROGBLIM = 1: 0 = lower band limit; 1 = upper band limit
search level settings: see Table 26
4
SLEV1*
SLEV0*
AMDELAY
STEP0*
-
3
2
IF counter delay; 0 = 40 ms; 1 = 80 ms
search steps AM: see Table 27
no function
1
0 (LSB)
Table 26. Search level settings
Bits SLEV[1:0]
RF level (AM)[1]
ADC[3:0] level bits
00
01
10
11
0.9 mV/m
0010
0100
0110
1001
1.2 mV/m
1.9 mV/m
3.8 mV/m
[1] Measured with ferroceptor C8E-A0424 TOKO Inc.
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Low-power AM/FM stereo radio for handheld applications
Table 27. Search steps AM
Programmable steps
Bit STEP0 Step size
MW
AM fref = 8 kHz
PLL step
MW
C-bank step
MW LW
LW
36
LW
0
1
9
9 kHz
9 kHz
10 kHz
9 kHz mode 9 kHz mode
10 kHz mode 10 kHz mode
10
40
10 kHz
Table 28. I/O port control SWPORT1
Bit PEN0
Bit P0
X[1]
PORT P0 (pin SWPORT1)
input
0
1
0
output logic 0
output logic 1
1
[1] X = don’t care.
Table 29. I/O port control SWPORT2
Bit INTEXT
Bit PEN1
Bit P1
PORT P1 (SWPORT2)
1
1
0
1
X [1]
input (internal reference)
0
output logic 0 (internal reference)
output logic 1 (internal reference)
reference input (13 MHz)
1
0
X[1]
1
[1] X = don’t care.
9.5.2 Register definition in read mode
Table 30. Survey of bit names in FM read mode
Bits marked with * are common for FM and AM mode.
Bits
7
6
5
4
3
2
1
0
Byte 1
Byte 2
Byte 3
IFCRDY*
BLIM*
PLL7
IFCE*
P1*
MOST
P0*
LEV3*
PLL12
PLL4
LEV2*
PLL11
PLL3
LEV1*
PLL10
PLL2
LEV0*
PLL9
PLL1
SFOUND*
PLL8
PLL6
PLL5
PLL0
9.5.2.1 FM read mode
Table 31. FM read mode - data byte 1
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) IFCRDY*
IF counter ready
IF counter enable
mono or stereo setting
search level setting
6
IFCE*
5
MOST
LEV3*
LEV2*
LEV1*
LEV0*
SFOUND*
4
3
2
1
0 (LSB)
station found
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Low-power AM/FM stereo radio for handheld applications
Table 32. FM read mode - data byte 2
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) BLIM*
band limit reached
port 1 setting
6
P1*
5
P0*
port 0 setting
4
PLL12
PLL11
PLL10
PLL9
PLL8
setting of synthesizer
3
2
1
0 (LSB)
Table 33. FM read mode - data byte 3
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) PLL7
setting of synthesizer
6
PLL6
PLL5
PLL4
PLL3
PLL2
PLL1
PLL0
5
4
3
2
1
0 (LSB)
9.5.2.2 AM read mode
Table 34. Survey of bit names in AM read mode
Bits marked with * are common for FM and AM mode.
Bits
7
6
5
-
4
3
2
1
LEV0*
PLL7
-
0
SFOUND*
PLL6
-
Byte 1
Byte 2
Byte 3
IFCRDY*
BLIM*
PLL5
IFCE*
P1*
LEV3*
PLL10
PLL2
LEV2*
PLL9
PLL1
LEV1*
PLL8
PLL0
P0*
PLL3
PLL4
Table 35. AM read mode - data byte 1
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) IFCRDY*
IF counter ready
IF counter enable
no function
6
IFCE*
-
5
4
LEV3*
LEV2*
LEV1*
LEV0*
SFOUND*
search level setting
3
2
1
0 (LSB)
station found
TEA5777_1
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Product data sheet
Rev. 01 — 11 April 2006
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TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 36. AM read mode - data byte 2
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) BLIM*
band limit reached
port 1 setting
6
P1*
5
P0*
port 0 setting
4
PLL10
PLL9
PLL8
PLL7
PLL6
setting of synthesizer
3
2
1
0 (LSB)
Table 37. AM read mode - data byte 3
Bits marked with * are common for FM and AM mode.
Bit
Symbol
Description
7 (MSB) PLL5
setting of synthesizer
6
PLL4
PLL3
PLL2
PLL1
PLL0
-
5
4
3
2
1
no function
no function
0 (LSB)
-
TEA5777_1
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Product data sheet
Rev. 01 — 11 April 2006
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TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
10. Limiting values
Table 38. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
VCCA
VCCD
Vx
Parameter
Conditions
Min
−0.3
−0.3
Max
+8
Unit
V
analog supply voltage
digital supply voltage
voltage on pin x
+5
V
VCOTANK1 and VCOTANK2
storage temperature
ambient temperature
electrostatic discharge voltage
−0.3
−55
−10
+8
V
Tstg
+150
+65
°C
°C
Tamb
Vesd
[1]
[2]
[1]
[2]
[1]
[2]
on pins SWPORT1 and SWPORT2 MM
HBM
MM
-
-
-
-
-
-
±100
V
V
V
V
V
V
±1000
±200
on pin AMRFIN
on all other pins
HBM
MM
±1500
±200
HBM
±2000
[1] Machine model: R = 10 Ω, L = 0.75 µH, C = 200 pF.
[2] Human body model: R = 1.5 kΩ, C = 100 pF.
11. Thermal characteristics
Table 39. Thermal characteristics
Symbol
Parameter
Conditions
Typ
Unit
Rth(j-a)
thermal resistance from junction to ambient in free air
HVQFN48 package
29
80
K/W
K/W
LQFP32 package
TEA5777_1
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Product data sheet
Rev. 01 — 11 April 2006
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TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
12. Characteristics
Table 40. Static characteristics
VCCA = VCCD = 3 V; Tamb = 25 °C; unless otherwise specified.
Symbol Parameter
Supplies
Conditions
Min
Typ
Max
Unit
VCCA
VCCD
ICCA
analog supply voltage
2.7
2.7
10
8
3.0
7.0
5.0
17
V
digital supply voltage
analog supply current
3.0
V
FM mode
13.9
9.8
mA
mA
mA
mA
mA
mA
AM mode
11
Standby mode via bus control
FM mode
-
0.03
0.8
0.15
1.5
1.5
0.25
ICCD
digital supply current
0.5
0.5
-
AM mode
0.8
Standby mode via bus control
0.13
DC operating voltages
VO
output voltage
unloaded
on pin CPOUT
tuning voltage range
0.2
-
VCCA − 0.3 V
on pins XTAL1 and XTAL2
on pin TMUTE
-
1.6
-
-
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
[1]
FM
AM
0.2
0.8
0.1
-
1.2
on pin VREF
-
-
-
-
1.25
-
-
-
-
-
on pin AGC2CAP
FM
AM
1.25
2.5
on pin V25DIG
on pins VAFL and VAFR
FM
AM
FM
AM
0.675 0.750 0.825
0.55
0.65
1.25
0
0.75
on pin MPXOUT
1
-
1.5
-
on pin V25IF
-
2.5
0.75
-
-
on pin PILDET/AMRFAGC
FM
-
-
AM
0
-
2.5
on pin VAMLNA
FM
-
-
-
AM
-
2.3
VI
input voltage
on pin MPXIN
unloaded
FM
0.7
0.75
0
0.8
V
V
V
V
AM
-
-
-
-
on pins RFIN1 and RFIN2
FM
0
-
1.75
0
AM
[1] These minimum and maximum values are typical values.
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
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TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 41. Digital input and output characteristics
VCCA = VCCD = 3 V; Tamb = 25 °C; unless otherwise specified.
Symbol Parameter Conditions
Software programmable ports: pins SWPORT1 and SWPORT2
Min
Typ
Max
Unit
VOH
VOL
HIGH-level output voltage
LOW-level output voltage
IO = 0 A
-
2.4
-
V
IO = 1 mA
on pin SWPORT1
on pin SWPORT2
VO = 0 V
-
109.7
105.5
−9
-
mV
mV
mA
mA
-
-
Io(source) output source current
Io(sink) output sink current
−6
6
−14
14
VO = 3 V
9
VO = 0.8 V; Rpu = 1 kΩ
on pin SWPORT1
on pin SWPORT2
-
-
7.85
8.04
-
-
mA
mA
Digital inputs
VIH
VIL
HIGH-level input voltage
LOW-level input voltage
0.45VCCD
-
-
-
-
V
V
0.2VCCD
Digital outputs: pins CLOCK, DATA and WRITE_READ
VOL
IOL
LOW-level output voltage
LOW-level output current
IOL = 500 µA; open-collector
-
-
-
450
-
mV
open-collector
500
µA
Table 42. Bus timing characteristics
VCCA = VCCD = 3 V; Tamb = 25 °C; unless otherwise specified.
Symbol Parameter
Timing I2C-bus
Conditions
Min
Typ
Max
Unit
fSCL
SCL clock frequency
-
-
-
-
400
kHz
µs
tHIGH
tLOW
HIGH period of the SCL clock
LOW period of the SCL clock
1
1
-
-
µs
Timing 3-wire bus; see Figure 7 and Figure 8
fi(clk)
clock input frequency
clock HIGH time
clock LOW time
-
-
-
-
1
-
MHz
ns
tclk(H)
tclk(L)
Write mode
300
300
-
ns
tw(W)
tsu(clk)
tsu(D)
th(D)
write enable pulse width
1
-
-
-
-
-
-
-
-
µs
ns
ns
ns
clock setup time
300
100
100
data input set-up time
data input hold time
in write mode
in write mode
Read mode
tw(R)
tsu(clk)
th(Q)
read enable pulse width
1
-
-
-
-
-
µs
ns
ns
ns
clock setup time
300
10
-
-
data output hold time
data output delay time
in read mode
in read mode
-
td(Q)
100
TEA5777_1
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Product data sheet
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TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
50 %
WRITE_READ
t
w(W)
t
su(clk)
CLOCK
DATA
50 %
50 %
su(D)
t
h(D)
t
valid data
50 %
001aae434
Fig 7. 3-wire bus write data
50 %
WRITE_READ
t
w(R)
t
t
clk(H)
su(clk)
CLOCK
DATA
50 %
50 %
t
clk(L)
t
t
h(Q)
d(Q)
50 %
50 %
001aae435
Fig 8. 3-wire bus read data
Table 43. Dynamic characteristics
VCCA = VCCD = 3 V; Tamb = 25 °C; all values are given in RMS; unless otherwise specified.
Symbol Parameter Conditions
FM voltage controlled oscillator: pins VCOTANK1 and VCOTANK2
Min
Typ
Max
Unit
fosc
Vo
oscillator frequency
output voltage
VCPOUT = 0.2 V to (VCCA − 0.3 V)
130
-
-
217
-
MHz
mV
measured between pins VCOTANK1 and
VCOTANK2; fosc = 200 MHz; Q = 40;
L = 33 nH
500
ICCA(VCO)
VCO analog supply current
0.5
1
3
mA
Crystal oscillator: pins XTAL1 and XTAL2
fxtal
crystal frequency
internal reference source selected
fxtal = 4 MHz
-
-
-
4
-
MHz
ppm
mV
∆fxtal
crystal frequency accuracy
20
280
50
-
Vo(xtal)(p-p) peak-to-peak crystal oscillator measured between pins XTAL1 and XTAL2
output voltage
VO(bias)
Ri
bias output voltage
input resistance
-
1.6
-
-
-
V
measured between pins XTAL1 and XTAL2
150
Ω
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
31 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 43. Dynamic characteristics …continued
VCCA = VCCD = 3 V; Tamb = 25 °C; all values are given in RMS; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Ci
input capacitance
measured between pins XTAL1 and XTAL2
-
16
-
pF
External reference frequency input: pin SWPORT2/EXTIN
fi
input frequency
FM
-
13
13
-
-
MHz
MHz
mV
V
AM
-
-
[1]
Vi
input voltage
input voltage
input impedance
external applied
150
1800
VI
no external input signal applied
at indicated input frequency
-
-
0.9
100
-
-
Zi
kΩ
Synthesizer
tsrch
search time
synthesizer search time for empty band
FM band from 87.5 MHz to 108 MHz;
step = 100 kHz
-
-
2.3
10
-
-
s
s
AM band from 522 kHz to 1620 kHz;
AM delay = 40 ms
tacq
acquisition time
synthesizer preset acquisition time between
two band limits
FM
-
-
-
10
10
10
-
-
-
ms
ms
ms
AM: MW
AM: LW
[2]
[2]
fRF
RF frequency
FM
fstep = 10 kHz; fIF = 150 kHz
fstep = 33.333 kHz; fIF = 133.333 kHz
fstep = 50 kHz; fIF = 150 kHz
AM; fstep = 1 kHz; fIF = 21 kHz
LW
10.24 -
34.13 -
81.91 MHz
273.03 MHz
409.55 MHz
51.2
-
128
512
-
-
511.75 kHz
MW
2047
kHz
Synthesizer programmable divider
D/Dprog programmable divider ratio
FM
AM
1024
8191
512
2047
Dprog(step) programmable divider step
NVCO(AM) AM VCO divider
-
-
-
1
-
-
-
AM MW
AM LW
8
32
Synthesizer reference divider
D/Dref(xtal) crystal reference divider ratio internal reference frequency; fxtal = 4 MHz
FM
fref(RF) = 10 kHz; fIF = 150 kHz
fref(RF) = 33.333 kHz; fIF = 133.333 kHz
fref(RF) = 50 kHz; fIF = 150 kHz
AM
-
-
-
200
60
-
-
-
40
fref(RF) = 1 kHz; fIF = 21 kHz
-
500
-
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
32 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 43. Dynamic characteristics …continued
VCCA = VCCD = 3 V; Tamb = 25 °C; all values are given in RMS; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
D/Dref(ext) external reference divider
ratio
external reference frequency; fi = 13 MHz
FM
fref(RF) = 10 kHz
fref(RF) = 33.333 kHz
fref(RF) = 50 kHz
AM
-
-
-
650
195
130
-
-
-
fref(RF) = 1 kHz
-
1625
-
Charge pump: pin CPOUT
Io(sink)
output sink current
high current range
low current range
high current range
low current range
300
200
350
250
410
300
µA
µA
µA
µA
Io(source)(M) peak source output current
−200 −250 −300
−140 −170 −200
IF counter
NIFc
IF counter length
-
-
-
-
13
1
-
-
-
-
bit
bit
µV
µV
NIFc(result) IF counter result
in-window or out-window
Vsens
sensitivity voltage
FM
5
AM
-
fIF(window)
IF window width frequency
FM
bit IFW = 0
bit IFW = 1
AM
−10
−20
+10
+20
kHz
kHz
bit IFW = 0
bit IFW = 1
period measuring time
FM
−2
−4
+2
+4
kHz
kHz
tIFc
IF counter time
-
-
-
20
5
-
-
-
ms
ms
ms
AM
td(IFc)
IF counter delay time
FM
5
AM
bit AMDELAY = 0
bit AMDELAY = 1
-
-
40
80
-
-
ms
ms
[1] Works with digital input signal from 0 V to 1.4 V.
[2] Programmable frequency range of the synthesizer referred to the antenna input.
TEA5777_1
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Product data sheet
Rev. 01 — 11 April 2006
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TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 44. FM performance
VCCA = VCCD = 3 V; Tamb = 25 °C; fRF = 100 MHz; fmod = 1 kHz; ∆f = 22.5 kHz; τdeemp = 50 µs; all AC values are given in
RMS; see test circuit of Figure 9; unless otherwise specified.
Symbol
Inputs
Parameter
Conditions
Min
Typ
Max
Unit
Input: pins RFIN1 and RFIN2
Ri
input resistance
measured between pins RFIN1 and
RFIN2
-
-
300
4
-
-
Ω
Ci
input capacitance
pF
FM dummy
Vi
[1]
input voltage
Vi = Vi2 = sensitivity at dummy input;
(S+N)/N = 26 dB; L = R;
-
-
2.7
3.5
-
µV
Baud(−3dB) = 300 Hz to 15 kHz
A-weighted; fIF = 133.333 kHz
large signal voltage handling capacity;
THD < 10 %
1000
mV
FM channel
∆fAF(M)
peak AF frequency deviation
Vi2 = 1 mV; fmod = 1 kHz, L = R;
fIF = 133.333 kHz
THD < 1 %
75
75
-
102.7
110.1
97
-
-
-
kHz
THD < 1.5 %
kHz
[2]
[2]
IP3ib
in-band third-order intercept
point
∆f1 = 200 kHz; ∆f2 = 400 kHz;
RF = 98 MHz
dBµV
f
IP3ob
out-band third-order intercept ∆f1 = 5 MHz; ∆f2 = 10 MHz;
-
96
-
dBµV
point
fRF = 88 MHz or 103 MHz
S+300
S−300
αimage
high-side 300 kHz selectivity
low-side 300 kHz selectivity
image rejection
40
35
25
-
-
-
-
dB
dB
dB
-
fRF = 87.5 MHz to 108 MHz
Vi2 = 1 mV; ∆fFM(max) = 22.5 kHz
low-end
41
Baud(−3dB) −3 dB audio bandwidth
[3]
-
-
50
-
Hz
Hz
dB
dB
high-end
12500
-
PSRR
power supply rejection ratio
AM suppression
∆VCCA = 147 mV (RMS); fripple = 1 kHz
100 µV < Vi2 < 10 mV; m = 0.3;
-
-
42
50
-
αAM
-
fmod = 1 kHz
I and Q channel IF filter
fIF
IF frequency
fstep = 33.333 kHz
fstep = 10 kHz or 50 kHz
all combinations
fIF = 133.333 kHz
fIF = 150 kHz
-
133.333 -
kHz
kHz
kHz
kHz
kHz
-
150
-
-
∆fc(IF)
IF center frequency deviation
IF filter bandwidth
-
5.5
112
127
BIF
108
123
110
125
Outputs
MPX output: pin MPXOUT
Vo
output voltage
Vi2 = 1 mV
fIF = 133.333 kHz
fIF = 150 kHz
75
60
-
104
82
125
100
-
mV
mV
µA
Io(AC)M
peak AC output current
100
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
34 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 44. FM performance …continued
VCCA = VCCD = 3 V; Tamb = 25 °C; fRF = 100 MHz; fmod = 1 kHz; ∆f = 22.5 kHz; τdeemp = 50 µs; all AC values are given in
RMS; see test circuit of Figure 9; unless otherwise specified.
Symbol
VO
Parameter
Conditions
Min
Typ
1.25
0.55
Max
1.5
Unit
V
output voltage
properly tuned
1
-
THD
total harmonic distortion
Vi2 = 1 mV; ∆f = 75 kHz; with external
τdeemp = 50 µs; Baud(−3dB) limited to
15 kHz
1.5
%
S/N
signal-to-noise ratio
Vi2 = 1 mV; L = R;
-
60
-
dB
Baud(−3dB) = 300 Hz to 15 kHz
A-weighted; fIF = 133.333 kHz
Zo
CL
RL
output impedance
load capacitance
load resistance
300
-
420
550
40
-
Ω
-
-
pF
kΩ
33
AF output: pins VAFL and VAFR
Vo(AF) AF output voltage
Vi2 = 1 mV, ∆fFM(max) = 22.5 kHz
fIF = 133.333 kHz
70
55
95
75
120
95
mV
mV
fIF = 150 kHz
FM IF level detector
Input FM dummy
Vi
input voltage
Vi = Vi2 = detector level voltage
start ADC
-
-
5
-
-
µV
step size of ADC
4.7
dB
Level output: pin TMUTE
VO
output voltage
Vi2 = 0 V
-
-
-
0.2
0.8
214
-
-
-
V
V
Vi2 = 5 mV
Vo(slope)
Ro
output voltage slope
output resistance
10 mV < Vi2 < 1 mV
mV/
20dB
200
250
350
kΩ
[1] The sensitivity at the dummy input is equivalent to EMF in a 75 Ω system.
[2] Related to LNA input.
[3] With a pre-emphasis of 50 µs.
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
35 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 45. AM performance
VCCA = VCCD = 3 V; Tamb = 25 °C; fRF = 918 kHz; fmod = 1 kHz; m = 0.3; τdeemp = 75 µs; Vi1 measured at input of matching
network; all AC values are given in RMS; see test circuit of Figure 9; unless otherwise specified.
Symbol
Inputs
Parameter
Conditions
Min
Typ
Max
Unit
AM RF input: pin AMRFIN
VI
II
input voltage
input current
input voltage
-
-
-
0
-
-
-
V
VPILDET/AMRFAGC = 0 V
0
µA
µV
Vi
RF sensitivity at dummy input;
Vi = Vi1; (S+N)/N = 26 dB;
A-weighting filter
155
large signal voltage handling
capability; THD < 10 %
-
-
300
2.9
-
-
mV
[1]
E
electric field strength
RF sensitivity with ferroceptor;
mV/m
(S+N)/N = 26 dB; A-weighting filter
AM channel
Overall data
Baud(−3dB)
−3 dB audio bandwidth
Vi1 = 5 mV
low-end
-
-
50
-
Hz
kHz
dB
%
high-end
1.5
40
-
2.1
48
1
S/N
signal-to-noise ratio
Vi1 = 5 mV; A-weighting filter
-
THD
total harmonic distortion
Vi1 = 5 mV; m = 0.8;
bit AGCRF = 0 (slow);
bit AGCIF = 0 (slow);
2.5
B
aud(−3dB) limited to 15 kHz
∆VCCA = 147 mV (RMS);
ripple = 1 kHz
PSRR
power supply rejection ratio
-
34
-
dB
f
S+9
high-side 9 kHz selectivity
low-side 9 kHz selectivity
high-side 27 kHz selectivity
low-side 27 kHz selectivity
high-side 100 kHz selectivity
low-side 100 kHz selectivity
image rejection
measured at dummy input Vi1
measured at dummy input Vi1
measured at dummy input Vi1
measured at dummy input Vi1
measured at dummy input Vi1
measured at dummy input Vi1
520 kHz ≤ fRF ≤ 1720 kHz
25
25
45
45
45
45
40
32
30
58
58
59
59
-
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
S−9
S+27
S−27
S+100
S−100
αimage
[2]
Capacitance bank
Ci
input capacitance
bit CALLIGN = 0
minimum C[6:0] = 000 0000
maximum C[6:0] = 111 1010
-
20.5
453
122
-
pF
pF
390
-
544
-
Nstep(bank)
Calign
number of bank steps
alignment capacitance
bit CALLIGN = 1
C[6:0] = 000 0000
C[6:0] = 111 1111
-
-
-
-
0
-
-
-
-
pF
pF
pF
17
Calign(step)
Nstep(align)
alignment capacitance step
number of alignment steps
0.134
128
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
36 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 45. AM performance …continued
VCCA = VCCD = 3 V; Tamb = 25 °C; fRF = 918 kHz; fmod = 1 kHz; m = 0.3; τdeemp = 75 µs; Vi1 measured at input of matching
network; all AC values are given in RMS; see test circuit of Figure 9; unless otherwise specified.
Symbol
LNA
Parameter
Conditions
Min
Typ
Max
Unit
GLNA
LNA gain
bit LNA = 0 (5 ×)
-
-
-
-
14
20
0
-
-
-
-
dB
dB
dB
dB
bit LNA = 1 (10 ×)
αAGC(RF)
RF AGC attenuation
input resistance
VPILDET/AMRFAGC = 0 V
VPILDET/AMRFAGC = 2 V
bit LNA = 0 (5 ×)
25
Ri
RFB = 0 (low feed-back)
RFB = 1 (high feed-back)
bit LNA = 1 (10 ×)
-
-
166
366
-
-
kΩ
kΩ
RFB = 0 (low feed-back)
RFB = 1 (high feed-back)
-
-
91
-
-
kΩ
kΩ
200
I and Q channel IF filter
fIF
IF frequency
-
-
-
21
-
-
kHz
kHz
kHz
∆fIF
IF frequency deviation
IF filter bandwidth
0.2
-
BIF
8
Outputs
AF output: pins VAFL and VAFR
Vo(AF)
VO
AF output voltage
output voltage
Vi1 = 5 mV
72
90
108
0.75
800
mV
V
properly tuned
0.55
300
0.65
500
Zo
output impedance
Ω
AM IF level detector
Input AM dummy
Vi
input voltage
Vi = Vi2 = detector level voltage;
LNA = 1 and RFB = 0
start ADC
end ADC
-
-
50
2
-
-
µV
mV
Level output: pin TMUTE
VO
output voltage
Vi1 = 0 V
0.1
0.8
-
0.15
1
0.3
1.2
-
V
V
Vi1 = 10 mV
Vo(slope)
Zo
output voltage slope
output impedance
100 µV< Vi1 < 1 mV
375
mV/
20dB
260
360
480
kΩ
[1] With ferroceptor C8E-A0424 TOKO Inc.
[2] Without antenna input contribution.
TEA5777_1
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Product data sheet
Rev. 01 — 11 April 2006
37 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 46. Stereo decoder characteristics
VCCA = VCCD = 3 V; Tamb = 25 °C; τdeemp= 50 µs; not forced to mono; all AC values are given in RMS; see test circuit of
Figure 9; unless otherwise specified.
Symbol Parameter
Input: pin MPXIN
Conditions
Min
Typ
Max
Unit
VI
Ri
input voltage
0.7
0.75
400
0.8
V
input resistance
300
500
kΩ
MPX stereo decoder channel
Overall data
[1]
Gv
voltage gain
fmod = 1 kHz
−1.1
−0.82 −0.4
dB
dB
αcs
channel separation
Vi3 = 300 mV; fmod = 1 kHz;
26
40
-
V
pilot = 30 mV; R = 1 and L = 0 or
R = 0 and L = 1; VTMUTE = 1 V;
IF = 133.333 kHz; Baud(−3dB)
f
limited to 15 kHz
(S+N)/N signal plus noise-to-noise ratio
measured at AF output; L = R;
Vi3 = 300 mV; fmod = 1 kHz;
-
-
68.5
0.05
-
dB
%
Vpilot = 30 mV; A-weighted
THD
total harmonic distortion
measured at AF output; L = R;
VMPXOUT = 300 mV; fmod = 1 kHz;
0.5
Vpilot = 30 mV; Baud(−3dB) limited to
15 kHz
α19
α38
19 kHz suppression
38 kHz suppression
reference 300 mV = 0 dB
reference 300 mV = 0 dB
23
31
28
52
-
-
dB
dB
Pilot detector
Vpilot
pilot voltage
VTMUTE = 1 V
switching to stereo
switching back to mono
mono hysteresis
-
13
6
16
-
mV
mV
mV
3
6
7
8
Integrated de-emphasis
τdeemp
de-emphasis time constant
bit DEEM = 0
bit DEEM = 1
-
-
50
75
-
-
µs
µs
Hard mute
αmute
mute attenuation
measured on pins VAFL and
VAFR; audio muted with bit
MUTE = 1; A-weighted
60
70
-
dB
SDS curve (blend function)
Vi
input voltage
SDS region voltage Vi = Vi1;
Vi3 = 300 mV; fmod = 1 kHz;
Vpilot = 30 mV; R = 1 and L = 0 or
R = 0 and L = 1; bit SDSOFF = 0;
bit DOFF = 0; bit FOMO = 0
start level
stop level
-
-
15
-
-
µV
µV
150
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
38 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 46. Stereo decoder characteristics …continued
VCCA = VCCD = 3 V; Tamb = 25 °C; τdeemp= 50 µs; not forced to mono; all AC values are given in RMS; see test circuit of
Figure 9; unless otherwise specified.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
AF output: pins VAFL and VAFR
Vo(AF)
AF output voltage
measured with respect to input pin
MPXIN; Vi3 = 100 mV; L = R;
83
91
99
mV
fmod = 1 kHz
Io(sink)M
VO
peak sink output current
output voltage
Vi3 = 100 mV; L = R; fmod = 1 kHz
-
60
-
µA
measured with respect to input pin
MPXIN; FM mode
0.675 0.75
0.825
V
Ro
output resistance
300 500
800
Ω
[1] This includes the attenuation due to the de-emphasis. At 1 kHz this is approximately 0.4 dB for 50 µs.
TEA5777_1
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Product data sheet
Rev. 01 — 11 April 2006
39 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
13. Application information
13.1 AM coil requirements and alignment
The AM receiver is a magnetic field receiver. It can be used with a ferroceptor or an
antenna. In both cases, the antenna can be seen as an inductor that should be in
resonance with the on-chip C-bank at the frequency of interest. The C-bank values are
such that a nominal device and nominal antenna inductor value result in the correct tuning
grid depending upon bit STEP0; see Table 16 and Table 27.This puts requirements on the
nominal value and tuning range of the AM antenna. Due to spread an alignment is
needed.
13.1.1 AM coil requirements
In order to align the antenna C-bank the antenna coil must meet the requirements of
Table 47.
Table 47. AM coil requirements
Parameter
Value
Nominal value
203 µH
± 16 %
Tuning range needed for alignment
(excluding own tolerance)
Optimal TC1[1]
−50 ppm/K
[1] Optimal means that the LC product (L of AM coil and C of C-bank) has zero TC1, since
TC1(C-bank) = +50 ppm/K. Having TC1(L of AM coil) equal to −50 ppm/K is not a hard requirement.
However, it is advisable to keep the TC1(LC product) < 350 ppm/K.
13.1.2 AM coil alignment
Alignment is setting the right C-align value and tuning the AM coil. This is done as follows:
1. Set C-align = 0
2. Measure the resonance frequency 1 (frsn1) with C-bank = 0
3. Measure the resonance frequency 2 (frsn2) with C-bank = 122
4. Set C-bank = 0:
– Tune C-align until the resonance frequency 3 becomes frsn3
– Tune AM coil until the resonance frequency 4 becomes frsn4
The frsn3 and frsn4 values can be calculated based upon frsn1 and frsn2
.
This procedure only has to be done once in order to fit the AM coil and device together.
The C-align data has to be stored in the microcontroller and should be written every time
the device is powered up.
For C-align the internal digital controlled capacitor is used in principle. It is also possible to
use an external trim capacitor (0 pF to 17 pF) instead. This has the advantage that no
alignment data has to be stored in the microcontroller at the cost of one trim capacitor.
TEA5777_1
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Product data sheet
Rev. 01 — 11 April 2006
40 of 47
xxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx x xxxxxxxxxxxxxx xxxxxxxxxx xxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx
xxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxx xxxxxxxxxxxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxx x x
audio
L
R
V
i3
C10
C20
C7
C1
24
23
22
21
20
19
18
17
C21
V
R10
CC
V
CCA
BUSMODE
25
26
27
28
29
30
31
16
15
14
13
12
11
10
9
V
CC
C5
C6
V25IF
GNDIF
RFIN1
TMUTE
WRITE_READ
DATA
FM dummy
R11 R13
write/read
data
C18
L4
V
i2
bus
control
C17
C16
TEA5777HL
GNDRF
RFIN2
CLOCK
XTAL1
50 Ω
R12
L3
clock
C14
C15
GNDD
X1
40 MHz
PILDET/AMRFAGC
VAMLNA
XTAL2
32
1
2
3
4
5
6
7
8
R8
V
CC
L6
AM dummy
R15
V
i(ext)
C19
L1
L2
C12
R4
C11
D8
D9
R14
001aab437
V
i1
50 Ω
Fig 9. Test circuit
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
Table 48. Test circuit components
Part
number
Specification
Value
Remark
Tolerance Type
C1
100 nF
3.3 µF
100 nF
2.2 µF
220 nF
15 nF
20 %
20 %
20 %
20 %
20 %
20 %
20 %
20 %
20 %
5 %
C0603
6V3
C5
B45196E1335M10*, EPCOS
B45196E1225M10*, EPCOS
C6
C0603
6V3
C7
C10
C11
C12
C14
C15
C16
C17
C18
C19
C20
C21
D8
C0805
C0603
C0805
C1206
6V3
220 nF
1 µF
low leakage (< 5 nA), X7R
3.3 µF
33 pF
B45196E1335M10*, EPCOS
C0603
C0603
C0603
6V3
NP0
39 pF
5 %
NP0
12 pF
5 %
NP0
2.2 µF
220 nF
1 µF
20 %
20 %
20 %
B45196E1225M10*, EPCOS
NP0
C0603
16 V
B45196E3105M10*, EPCOS
BB202
BB202
33 nH
D9
L1
5 %
5 %
5 %
5 %
Q = 40
Q = 40
TOKO, LLQ1608-A33N_J
TOKO, LLQ1608-A33N_J
TOKO, LLQ1608-AR120N_J
TOKO, LLQ1608-AR220N_J
L2
33 nH
L3
120 nH
220 nH
200 nH
L4
L6
Q > 120
tuning range larger than −16 % to +16 %;
Sagami 940927266B (part of the AM dummy)
R4
2.2 kΩ
100 W
47 W
10 W
60 W
45 W
51 W
1 W
20 %
20 %
20 %
5 %
R0603
R0603
R0603
R0603
R0603
R0603
R0603
R0603
HC49
R8
R10
R11
R12
R13
R14
R15
X1
(part of the FM dummy, i.e. 50 Ω to 75 Ω)
(part of the FM dummy, i.e. 50 Ω to 75 Ω)
(part of the FM dummy, i.e. 50 Ω to 75 Ω)
(part of the AM dummy)
5 %
5 %
5 %
5 %
(part of the AM dummy)
4 MHz
NDK
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
42 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
15. Package outline
HVQFN48: plastic thermal enhanced very thin quad flat package; no leads;
48 terminals; body 7 x 7 x 0.85 mm
SOT619-1
D
B
A
terminal 1
index area
A
A
1
E
c
detail X
C
e
1
y
y
1/2 e
e
v
M
M
b
C
C
A
B
C
1
w
13
24
L
25
12
e
e
E
2
h
1/2 e
1
36
terminal 1
index area
48
37
D
h
X
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
(1)
A
(1)
(1)
UNIT
A
b
c
E
e
e
e
2
y
D
D
E
L
v
w
y
1
1
h
1
h
max.
0.05 0.30
0.00 0.18
7.1
6.9
5.25
4.95
7.1
6.9
5.25
4.95
0.5
0.3
mm
0.05
0.1
1
0.2
0.5
5.5
5.5
0.1 0.05
Note
1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
01-08-08
02-10-18
SOT619-1
- - -
MO-220
- - -
Fig 10. Package outline SOT619-1 (HVQFN48)
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
43 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
LQFP32: plastic low profile quad flat package; 32 leads; body 7 x 7 x 1.4 mm
SOT358-1
c
y
X
A
24
17
16
25
Z
E
e
H
E
A
E
(A )
3
2
A
A
1
w M
p
θ
b
L
p
pin 1 index
L
32
9
detail X
1
8
e
Z
D
v M
A
w M
b
p
D
B
H
v M
B
D
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
A
(1)
(1)
(1)
(1)
UNIT
A
A
A
b
c
D
E
e
H
D
H
L
L
v
w
y
Z
Z
E
θ
1
2
3
p
E
p
D
max.
7o
0o
0.20 1.45
0.05 1.35
0.4 0.18 7.1
0.3 0.12 6.9
7.1
6.9
9.15 9.15
8.85 8.85
0.75
0.45
0.9
0.5
0.9
0.5
mm
1.6
0.25
0.8
1
0.2 0.25 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
03-02-25
05-11-09
SOT358 -1
136E03
MS-026
Fig 11. Package outline SOT358-1 (LQFP32)
TEA5777_1
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
44 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
16. Abbreviations
Table 49. Abbreviations
Acronym
ADC
Description
Analog-to-Digital Converter
Automatic Gain Control
AGC
BiCMOS
FET
Bi-polar Complementary Metal-Oxide Semiconductor
Field-Effect Transistor
GSM
HBM
I/Q
Global System for Mobile communication
Human Body Model
In-phase/Quadrature-phase
Low Noise Amplifier
LNA
LW
Long Wave
MOSFET
MPX
MM
Metal-Oxide-Semiconductor Field-Effect Transistor
Multiplex
Machine Model
MW
Medium Wave
OIRT
Organisation Internationale de Radiodiffusion et de Télévision (International
Radio and Television Organization)
PLL
Phase-Locked Loop
RDS
RSSI
SDS
VCO
Radio Data System
Receiver Signal Strength Information
Signal Dependent Stereo
Voltage Controlled Oscillator
17. Revision history
Table 50. Revision history
Document ID
Release date
20060411
Data sheet status
Change notice
Supersedes
TEA5777_1
Product data sheet
-
-
TEA5777_1
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Product data sheet
Rev. 01 — 11 April 2006
45 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
18. Legal information
18.1 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.semiconductors.philips.com.
to result in personal injury, death or severe property or environmental
18.2 Definitions
damage. Philips Semiconductors accepts no liability for inclusion and/or use
of Philips Semiconductors products in such equipment or applications and
therefore such inclusion and/or use is at the customer’s own risk.
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. Philips 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. Philips 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 Philips 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 — Philips Semiconductors products are sold
subject to the general terms and conditions of commercial sale, as published
at http://www.semiconductors.philips.com/profile/terms, including those
pertaining to warranty, intellectual property rights infringement and limitation
of liability, unless explicitly otherwise agreed to in writing by Philips
18.3 Disclaimers
General — Information in this document is believed to be accurate and
reliable. However, Philips 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.
Semiconductors. In case of any inconsistency or conflict between information
in this document and such terms and conditions, the latter will prevail.
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 — Philips 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.
18.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
Suitability for use — Philips 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 a Philips Semiconductors product can reasonably be expected
I2C-bus — logo is a trademark of Koninklijke Philips Electronics N.V.
19. Contact information
For additional information, please visit: http://www.semiconductors.philips.com
For sales office addresses, send an email to: sales.addresses@www.semiconductors.philips.com
TEA5777_1
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Product data sheet
Rev. 01 — 11 April 2006
46 of 47
TEA5777
Philips Semiconductors
Low-power AM/FM stereo radio for handheld applications
20. Contents
1
General description . . . . . . . . . . . . . . . . . . . . . . 1
9.4.1
9.4.2
9.4.3
9.5
Write mode. . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Read mode. . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Dbus function in 3-wire mode (silent readout) 19
Data transfer in I2C-bus and 3-wire mode . . . 20
Register definition in write mode . . . . . . . . . . 20
FM write mode . . . . . . . . . . . . . . . . . . . . . . . . 20
AM write mode . . . . . . . . . . . . . . . . . . . . . . . . 22
Register definition in read mode . . . . . . . . . . 25
FM read mode . . . . . . . . . . . . . . . . . . . . . . . . 25
AM read mode . . . . . . . . . . . . . . . . . . . . . . . . 26
2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
AM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
FM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.1
2.2
2.3
9.5.1
9.5.1.1
9.5.1.2
9.5.2
9.5.2.1
9.5.2.2
3
4
5
6
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Quick reference data . . . . . . . . . . . . . . . . . . . . . 2
Ordering information. . . . . . . . . . . . . . . . . . . . . 4
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7
7.1
7.2
Pinning information. . . . . . . . . . . . . . . . . . . . . . 6
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 7
10
11
12
Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 28
Thermal characteristics . . . . . . . . . . . . . . . . . 28
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 29
8
8.1
Functional description . . . . . . . . . . . . . . . . . . . 9
AM radio part . . . . . . . . . . . . . . . . . . . . . . . . . 10
AM RF amplifier . . . . . . . . . . . . . . . . . . . . . . . 10
Tuning AM antenna circuit . . . . . . . . . . . . . . . 10
AM I/Q mixer. . . . . . . . . . . . . . . . . . . . . . . . . . 10
AM VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
AM IF filter . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
AM IF amplification and AM detection . . . . . . 11
FM radio part . . . . . . . . . . . . . . . . . . . . . . . . . 11
Low noise RF amplifier . . . . . . . . . . . . . . . . . . 11
FM I/Q mixer. . . . . . . . . . . . . . . . . . . . . . . . . . 11
FM VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
FM IF filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
FM demodulator . . . . . . . . . . . . . . . . . . . . . . . 12
Stereo decoder . . . . . . . . . . . . . . . . . . . . . . . . 12
MPX decoder . . . . . . . . . . . . . . . . . . . . . . . . . 12
Signal strength depending mono/stereo blend 12
Pilot detector. . . . . . . . . . . . . . . . . . . . . . . . . . 12
De-emphasis. . . . . . . . . . . . . . . . . . . . . . . . . . 12
Tuning function . . . . . . . . . . . . . . . . . . . . . . . . 12
Reference frequency generation . . . . . . . . . . 13
Crystal oscillator . . . . . . . . . . . . . . . . . . . . . . . 13
IF counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Automatic search operation . . . . . . . . . . . . . . 13
RF level information (RSSI) . . . . . . . . . . . . . . 14
Software programmable ports . . . . . . . . . . . . 14
13
13.1
13.1.1
13.1.2
Application information . . . . . . . . . . . . . . . . . 40
AM coil requirements and alignment . . . . . . . 40
AM coil requirements . . . . . . . . . . . . . . . . . . . 40
AM coil alignment. . . . . . . . . . . . . . . . . . . . . . 40
8.1.1
8.1.2
8.1.3
8.1.4
8.1.5
8.1.6
8.2
8.2.1
8.2.2
8.2.3
8.2.4
8.2.5
8.3
8.3.1
8.3.2
8.3.3
8.3.4
8.4
8.4.1
8.4.2
8.4.3
8.4.4
8.5
14
15
16
17
Test information. . . . . . . . . . . . . . . . . . . . . . . . 41
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 43
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 45
Revision history . . . . . . . . . . . . . . . . . . . . . . . 45
18
Legal information . . . . . . . . . . . . . . . . . . . . . . 46
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 46
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 46
18.1
18.2
18.3
18.4
19
20
Contact information . . . . . . . . . . . . . . . . . . . . 46
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
8.6
9
9.1
9.2
9.3
9.3.1
9.3.2
9.3.3
9.4
Control functions via I2C-bus and 3-wire bus 15
Bus interface. . . . . . . . . . . . . . . . . . . . . . . . . . 15
Bus protocol . . . . . . . . . . . . . . . . . . . . . . . . . . 15
I2C-bus mode . . . . . . . . . . . . . . . . . . . . . . . . . 16
Write mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Read mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Dbus function in I2C-bus mode (silent readout) 17
3-wire bus mode . . . . . . . . . . . . . . . . . . . . . . . 18
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© Koninklijke Philips Electronics N.V. 2006.
All rights reserved.
For more information, please visit: http://www.semiconductors.philips.com.
For sales office addresses, email to: sales.addresses@www.semiconductors.philips.com.
Date of release: 11 April 2006
Document identifier: TEA5777_1
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