TB1274BFG [TOSHIBA]
LUMINANCE, CHROMA AND SYNCHRONIZING SIGNALS PROCESSOR IC FOR PAL / NTSC / SECAM COLOR TV; 亮度色度和同步信号处理器IC，适用于PAL / NTSC / SECAM彩色电视
| 型号： | TB1274BFG |
| 厂家： | 
TOSHIBA |
| 描述： | LUMINANCE, CHROMA AND SYNCHRONIZING SIGNALS PROCESSOR IC FOR PAL / NTSC / SECAM COLOR TV |
| 文件： | 总37页 (文件大小：840K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TB1274BFG
TOSHIBA Bi-CMOS INTEGRATED CIRCUIT SILICON MONOLITHIC
TB1274BFG
LUMINANCE,
CHROMA
AND
SYNCHRONIZING SIGNALS PROCESSOR IC
FOR PAL / NTSC / SECAM COLOR TV
TB1274BFG integrates luminance, chroma and synchronizing
signals processing circuits for PAL / NTSC / SECAM color TV
system.
TB1274BFG incorporates high performance picture quality
compensation circuits in luminance section, an automatic PAL
/ NTSC / SECAM discrimination and decode circuits in chroma
section, and an automatic 50 / 60 Hz discrimination circuit in
synchronizing section.
Besides a crystal oscillator generates 4.43MHz, 3.58MHz and
M/N-PAL clock signals internally for color demodulation. A
horizontal PLL circuit is also built in this IC.
QFP48-P-1014-0.80
Weight : 0.83 g (Typ.)
PAL
/
SECAM
demodulation
circuits
which
are
adjustment-free circuits incorporates a 1H DL circuit inside for
operating the base band signal processing system.
Also, TB1274BFG makes it possible to set and to control various functions through the built-in I2C BUS
line.
FEATURES
LUMINANCE SECTION
SYNCHRONIZING SECTION
• Built-in chroma trap filter
• Y delay line
• Sharpness control
• Sub-Contrast control (-/+ 2dB)
• Black set-up
• Built-in horizontal VCO resonator
• Adjustment-free horizontal and vertical oscillation
by count-down circuit
•
Automatic vertical frequency discrimination
circuit
• Noise detection circuit
CHROMA SECTION
OTHERS
• Built-in 1H delay circuit (PAL / SECAM base band
demodulation system)
• One crystal color demodulation circuit (4.43MHz,
3.58MHz, M/N-PAL)
• Automatic system discrimination system and
forced system mode
•
•
Y/C out level control
4-channels inputs switching
• 2-input circuit for RGB
• 2-input circuit for Y/Cb/Cr
• Y/Cb/Cr outputs
• 1H delay line also serves as comb filter in NTSC
demodulation
• Cb/Cr offset adjustment
• Built-in pre filters for A/D converter
• Built-in band-pass and take-off filter, SECAM bell
filter
• Sub-Color control (-/+2dB)
1
2005-08-18
TB1274BFG
BLOCK DIAGRAM
P
E S T - U
P
A M C L
P
A M
n i B 1 -
- i n G 1
S D A
S C L
F
L P
S S N E
H S A R P
D L
-
n i R 1 -
G N C D - Y /
i n 2 - C r
C C V - y n S c
o - u i t v Y
S C P
K S M A
P
C L
S W
O N T F E H A L
n i
C b 2 -
H S
S W
1 T
F F O S E
- i n Y 2
G N D i t a l - D i g
- S r c e d / F o
C
V - C Y / C
n i B 2 -
- i n G 2
i n
C o m b C -
V D D i t a l - D i g
i n -
C o m b Y
n i R 2 -
V S
) i n - 2 B G ( R
Y M 2 / Y S
o u t B S - C V
n i - y n S c
f i l
X ' t a l
n i - 1
B S 1 C / Y V
2
2005-08-18
TB1274BFG
TERMINAL DESCRIPTIONS (YC-VCC/SYNC-VCC/D-VDD=5V and Ta=25℃, unless otherwise specified)
PIN
No.
INPUT / OUTPUT
SIGNALS
PIN NAME
FUNCTION
INTERFACE CIRCUIT
32
CVBS : 1Vp-p
Y : 1Vp-p(with sync)
DC : 1.8V
Input CVBS1/Y1 signal through a
clamping capacitor.
1
1
CVBS1/Y1-IN
250Ω
28
12
1kΩ
1Vp-p (with sync)
DC : 1.7V
2
2
SYNC-IN
Input signal to synchronize.
16
32
50Ω
2Vp-p(with sync)
DC : 0.6V
3
3
4
CVBS-OUT
CVBS or Y+C signal output pin.
28
12
Hi
Output
pin
of
vertical
Low
synchronizing signal.
Minimum pull-up resister is
6.8kΩ.
4
VS
50Ω
4.7V≦Hi≦5.2V
0V≦Low≦0.8V
16
32
Input luminance signal from
Comb filter through a clamping
capacitor.
1Vp-p(with sync)
DC : 1.8V
5
5
6
COMB Y-IN
D-VDD
250Ω
28
Power
supply
pin
for
－
DC 5V
DDS/BUS/V-CD/H-CD sections.
32
Input chroma signal from Comb
filter through clamping
capacitor. When this pin is
a
0.3Vp-p(Burst)
DC : 2.4V
250Ω
C
Forced-S
7
COMB C-IN connected to Vcc, color killer is
/ FORCED-S OFF and SECAM ID is ON
forcibly. (Forced SECAM mode)
7
4.0V≦Forced-S≦5.0V
(Th : 3.5V)
50kΩ
20kΩ
Refer
to
FUNCTION
DESCRIPTION.
28
3
2005-08-18
TB1274BFG
PIN
No.
INPUT / OUTPUT
SIGNALS
PIN NAME
D-GND
FUNCTION
pin
INTERFACE CIRCUIT
GND
for
－
8
DDS/BUS/V-CD/H-CD sections.
12
Hi
Output
pin
of
horizontal
synchronizing signal.
Minimum pull-down resister is
9
9
HS
50Ω
Low
2.7kΩ.
3.8V≦Hi≦4.6V
0≦Low≦1.0V
16
12
CP
H-BLK
Sand Castle Pulse output pin.
The clamping pulse and the
horizontal blanking pulse are
outputted.
Low
10
10 SCP
50Ω
3.6V≦CP≦4.4V
1.6V≦H-BLK≦2.4V
0.0V≦Low≦0.8V
with pull-down
16
12
resister (7.5kΩ)
Output pin to synchronize
inputs. Y signal from video-SW is
outputted.
1Vp-p(with sync)
DC : 2.1V
11
11 Yvi-OUT
50Ω
16
Power supply pin for liner
SYNC/HVCO sections.
－
12 SYNC-VCC
13 SCL
DC 5V
6
8
SCL pin for I2CBUS.
3kΩ
SCL
SCL
13
6
14 SDA
SDA pin for I2CBUS.
50Ω
3kΩ
14
SDA
SDA
ACK
8
Pin to switch main signals and
RGB1 signals. If the voltage of
this pin is HI and the
RGB1-ENB data is “enable” via
I2C BUS, RGB1-IN is selected.
And its status is responded to
the Read Bus data.
32
6kΩ
1.0V≦RGB1≦5.0V
(Th : 0.7V)
YS3
15
15
(RGB1-in)
28
GND pin for liner SYNC/HVCO
sections.
－
16 SYNC-GND
4
2005-08-18
TB1274BFG
PIN
No.
INPUT / OUTPUT
SIGNALS
PIN NAME
FUNCTION
INTERFACE CIRCUIT
32
17 Cr1-IN
18 Cb1-IN
240Ω
17,18
240Ω
240Ω
28
Y : 1Vp-p(with sync)
DC : 1.7V
32
Input Y1/Cb1/Cr1 signal through
a clamping capacitor.
1kΩ
1kΩ
(Selected by I2C BUS.)
Cb/Cr : 0.7Vp-p(100％
color bar)
DC : 2.5V
When Y/Cb/Cr1-IN is active, Y1
signal is synchronized.
19 Y1-IN
19
5kΩ
28
32
Connect a filter for clamping Y
signal.
10kΩ
50Ω
20 CLP-FIL
20
28
32
DC ;
21 Y-OUT
22 Cb-OUT
23 Cr-OUT
Y : 1.3V, Cb/Cr : 1.8V
Y/Cb/Cr output pins.
21,22,23
The
output’s
amplitudes
is
AC ;
Y
50Ω
variable from 0.5 to 1.6Vp-p by
:
I2C BUS.
0.7Vp-p(0dB,non-sync)
Cb/Cr : 0.7Vp-p(0dB)
28
32
1.0V≦YCbCr2≦5.0V
(Th : 0.7V)
YS1
24
Pin to switch main signals and
(YCbCr2-in) YCbCr2 signals.
6.1kΩ
24
28
5
2005-08-18
TB1274BFG
PIN
No.
INPUT / OUTPUT
SIGNALS
PIN NAME
FUNCTION
INTERFACE CIRCUIT
32
25 B1-IN
26 G1-IN
Input RGB1 signal through
a
250Ω
0.7Vp-p
DC : 2.5V
25,26,27
clamping capacitor.(Selected by
250Ω
YS3 and I2C BUS.)
250Ω
27 R1-IN
28
32
GND
pin
for
－
28 Y/C-GND
Y/C/Text/Video-SW/1HDL
sections.
29 Cr2-IN
30 Cb2-IN
270Ω
29,30
240Ω
270Ω
DAC
OFFSET
Y : 1Vp-p(with sync)
DC : 1.7V
28
Input Y2/Cb2/Cr2 signal through
a clamping capacitor. (Selected by
YS1.)
32
Cb/Cr : 0.7Vp-p(100％
color bar)
DC : 2.5V
240Ω
31 Y2-IN
240Ω
31
240Ω
28
32
Power supply pin for Y/C/Text/
Video-SW/1HDL sections.
－
32 Y/C-VCC
33 B2-IN
DC 5V
Input RGB2 signal through
clamping capacitor. (Selected by
YS2.)
a
250Ω
0.7Vp-p
DC : 2.5V
33,34,35
34 G2-IN
35 R2-IN
250Ω
250Ω
28
32
Pin to switch main signals and
RGB2 inputs.
Half-tone ON/OFF SW is also
included. Half tone gain is
selected by I2C BUS.
1.0V≦YM≦1.5V
2.5V≦RGB2≦5.0V
YS2/YM
36
(RGB2-in)
(Th1
: 0.7V, Th2 :
36
6kΩ
2.0V)
28
6
2005-08-18
TB1274BFG
PIN
No.
INPUT / OUTPUT
SIGNALS
PIN NAME
FUNCTION
INTERFACE CIRCUIT
–
Connect this terminal to Y/C
VCC.
37 FIL
–
32
Pin to connect a 16.2MHz crystal.
Recommended crystal :
NR-18 NT162020A, made by
NIHON DENPA KOGYO CO,
LTD.
500Ω
500Ω
1kΩ
1kΩ
38 X’TAL
16.2MHz wave
38
28
32
Input C3 signal through
clamping capacitor.
a
0.3Vp-p(Burst)
DC : 1.6V
39 C3-IN
39
250Ω
28
32
28
200Ω
110kΩ
40
40 APC-FIL
Connect APC filer.
32
CVBS : 1Vp-p
Y : 1Vp-p(with sync)
DC : 1.8V
Input CVBS3/Y3 signal through a
clamping capacitor.
41
41 CVBS3/Y3-IN
250Ω
28
Slave address setting pin. Select
slave address. When this pin is
open, 8A/8BH is selected.
6
88/89H≦1.3V
3.9V≦8E/8FH
42 ADDRESS
W
R
88H
89H
8AH
8BH
8EH
8FH
(Th1
3.2V)
: 1.5V, Th2 :
42
3kΩ
8
32
Input C2 signal through
clamping capacitor.
a
0.3Vp-p(Burst)
DC : 1.6V
43 C2-IN
43
250Ω
28
7
2005-08-18
TB1274BFG
PIN
No.
INPUT / OUTPUT
SIGNALS
PIN NAME
FUNCTION
INTERFACE CIRCUIT
32
CVBS : 1Vp-p
Y : 1Vp-p(with sync)
DC : 1.8V
Input CVBS2/Y2 signal through a
clamping capacitor.
44
44 CVBS2/Y2-IN
250Ω
28
The status of color system is
responded to pin 45 and pin 46. It
is the same as Read BUS status.
32
5V
Color system
Pin 45
Pin 46
High
0V
45
M-PAL
Low
High
Low
Low
Low
High
High
45 COMB SYS
4.43PAL, SECAM, B/W
3.58/4.43NTSC
N-PAL
Low
High
28
32
Refer
DESCRIPTION.
to
FUNCTION
AC : 0.84Vp-p
DC : as blow fig.
Sub-carrier output pin.
Refer to FUNCTION
DESCRIPTION.
High
(3.1V)
46
46 Fsc-OUT
47 AFC-FIL
48 C1-IN
100Ω
(2.1V)
Low
28
12
47
Connect AFC filter.
300Ω
300Ω
16
32
Input C1 signal through
clamping capacitor.
a
0.3Vp-p(Burst)
DC : 1.6V
48
250Ω
28
8
2005-08-18
TB1274BFG
WRITE MODE
SLAVE ADDRESS : 88H / 8AH / 8EH
SUB
ADDRESS
MSB
D7
LSB
D0
PRESET
D6
D5
D4
D3
D2
D1
80
81
82
83
84
85
86
87
P/N ID
P/N GW
SUB-CONTRAST
SHARPNESS GAIN
TINT
0010 0000
1000 1000
1000 0000
0010 0000
0010 0000
0000 0000
0010 1000
0000 0000
1000 1000
1000 1000
0000 0000
1000 1000
0000 0000
SUB-COLOR
SHARPNESS EQ
Y-OUT LEVEL
C-OUT LEVEL
BPF Q
SHARPNESS f0
0
0
LPF
0
0
S-D TRAP
C-TRAP SW
FILTER SW
BPF f0
N-COMB
Cb/Cr-MUTE HALF TONE
Cb OFFSET1
Y-DL
RGB SELECT
COLOR SYSTEM
VIDEO SELECT
Cr OFFSET1
Cr OFFSET2
88
89
Cb OFFSET2
AFC GAIN
S B-Y ADJ
8A
8B
8C
8D
8E
8F
MVM
V C/D MODE
S V-ID
V-FREQ
S R-Y ADJ
BELL f0
S-INHBT
AUTO-SW
0
S ID
0
VP-PH
S GP
BELL/HPF
0
1
0
0
HS-PH
0
0
0
SETUP-SW
RGB1 ENB
1000 0000
0010 0000
0000 0000
0
0
TEST MODE
READ MODE
SLAVE ADDRESS : 89H / 8BH / 8FH
SUB
ADDRESS
00
MSB
D7
POR
LSB
D0
H-LOCK
1
D6
COLOR SYSTEM
V-STD C ID
D5
D4
D3
D2
*
D1
*
X’TAL
N-DET
01
V-FREQ
V-SIG
V15
Note) * ; don’t care
9
2005-08-18
TB1274BFG
BUS CONTROL FUNCTION
WRITE MODE
SLAVE ADDRESS : 88H / 8AH / 8EH
ITEM / Number of bits
FUNCTION
VARIABLE RANGE
PRESET
TINT adjustment for NTSC
0deg
TINT / ⑥
00H : -33deg～3F H : +33deg
(1LSB=1.1deg)
PAL/NTSC gate width
PAL/NTSC sensitivity SW
Sub-color control
Sub-contrast control
Sharpness center frequency changing 00 : 2.5MHz, 01 : 3.2MHz
10 : 4.0MHz, 11 : OFF
P/N GW / ①
P/N ID / ①
SUB-COLOR / ④
SUB-CONTRAST / ④
SHARPNESS f0 / ②
0 : 2.0μs, 1 : 3.2μs
0 : Normal, 1 : Low
0 H : -2dB ～ F H : 2dB
0 H : -2dB ～ F H : 2dB
2.0μs
Normal
0dB
0dB
2.5MHz
Sharpness equalizer characteristic
(Evaluation with 2T-pulse)
SHARPNESS GAIN / Sharpness gain control
④
00 : 1 : 1.2, 01 : 1 : 1
10 : 1.2 : 1, 11 : 1.4 : 1
0 H : -6dB ～ F H : 6dB
1 : 1.2
0dB
SHARPNESS EQ / ②
Y output level control (pin 21)
Cb/Cr output level control (pin 22/23)
BPF/TOF f0 adjustment
1.05Vp-p
1.05Vp-p
-400kHz
Y-OUT LEVEL / ⑥
C-OUT LEVEL / ⑥
BPF f0 / ②
00 H : 0.5 ～ 3F H : 1.6Vp-p
00 H : 0.5 ～ 3F H : 1.6Vp-p
00 : -400kHz, 01 : +0kHz,
10 : +400kHz, 11 : OFF(by-pass)
00 : 1.0, 01 : 1.5
BPF/TOF Q adjustment
1.0
BPF Q / ②
10 : 2.0, 11 : 2.5
BPF/TOF switch
Chroma trap switch
0 : BPF, 1 : TOF
0 : ON, 1 : OFF
BPF
ON
FILTER SW / ①
C-TRAP SW / ①
This
function
is
controlled
automatically by setting of “VIDEO
SELECT” and “Y/C-AUTO”.
Refer to FUNCTION DESCRIPTION.
SECAM double trap switch
0 : OFF, 1 : ON
OFF
S-D TRAP / ①
This
function
is
controlled
automatically by setting of “VIDEO
SELECT” and “Y/C-AUTO”.
Refer to FUNCTION DESCRIPTION.
Y/Cb/Cr LPF switch
0 : ON, 1 : OFF(by-pass)
ON
LPF / ①
Color system switching
Europe automatic mode ;
4.43PAL, 4.43NTSC, 3.58NTSC,
SECAM
000 : Europe automatic
001 : South America automatic
010 : 3.58NTSC
Europe
automatic
COLOR SYSTEM / ③
011 : 4.43NTSC
South America automatic mode ;
3.58NTSC, M-PAL, N-PAL
100 : 4.43PAL
101 : SECAM
Refer to FUNCTION DESCRIPTION. 110 : M-PAL, 111 : N-PAL
Y-DL / ④
Y-DL time adjustment (1LSB=40ns)
Refer to FUNCTION DESCRIPTION.
0000 : 120 ～ 1010 : 520ns
1011 ～ 1111 : don’t use
320ns
10
2005-08-18
TB1274BFG
ITEM / Number of bits
FUNCTION
VARIABLE RANGE
0 : OFF, 1 : ADD
Refer to
PRESET
1H addition switch, when NTCS.
Selection of input video signals
OFF
0000
N-COMB / ①
VIDEO SELECT / ④
FUNCTION DESCRIPTION.
Selection of input sources.
00 : Main, 01 : YCbCr1
Main
RGB SELECT / ②
Refer to FUNCTION DESCRIPTION. 10 : RGB1, 11 : don’t use
HALF TONE / ①
Half tone gain switch
Cb/Cr output mute switch
Cb/Cr offset adjustment (main route)
0 : -10dB, 1 : -6dB
0 : OFF, 1 : ON
0 H : -12 ～ F H : +10.5mV
-10dB
OFF
0mV
Cb/Cr-MUTE / ①
Cb/Cr OFFSET1 /
④/④
Cb/Cr OFFSET2 /
④/④
Cb/Cr offset adjustment (YCbCr2
input)
0mV
0 H : -12 ～ F H : +10.5mV
V count down frequency switch.
Automatic mode 1 ;
000 : Automatic mode 1,
001 : 50Hz, 010 : 60Hz,
Automatic
mode 1
V-FREQ / ③
50/60Hz automatic distinction. At 011 : Automatic mode 2,
no-signal, the last statement is 100
kept. Right after power-on, 50Hz free-run),
:
Forced 312.5H (AFC
Forced 262.5H (AFC
Forced 313H (AFC
mode is run.
101
:
Automatic mode 2 ;
free-run),
50/60Hz automatic distinction. And 110
50Hz mode is run at no-signal. free-run),
Refer to FUNCTION DESCRIPTION. 111 : Forced 263H (AFC free-run)
V count down judge switch. 00 :Normal 1, 01 : Teletext,
:
V C/D MODE / ②
AFC SENS / ②
Normal 1
Refer to FUNCTION DESCRIPTION. 10 : Fast, 11 : Normal 2
note)
Normal 1 : One time detection
Normal 2 : Continuously detection
AFC sensitivity switch
00 : +6dB, 01 : 0dB,
+6dB
(data : 00)
Narrow
10 : -6dB, 11 : -17dB
Macrovision Mask + AFC Mask
SECAM R-Y black adjustment
SECAM B-Y black adjustment
0 : Narrow, 1 : Always masked
0 H : -10 ～ F H : 8.8mV
0 H : -10 ～ F H : 8.8mV
MVM / ①
0mV
0mV
Bell
S R-Y ADJ / ④
S B-Y ADJ / ④
BELL/HPF / ②
SECAM bell/HPF switching. Or the 00 : Bell, 01 : Boost 1,
high frequency side on SECAM bell 10 : Boost 2, 11 : HPF
filter is boosted.
Refer to FUNCTION DESCRIPTION.
BELL f0 adjustment
SECAM V-ID switch
SECAM gate position adjustment (Its
width is same)
0 : Normal, 1 : +15kHz
0 : OFF, 1 : ON
00 : Normal, 01 : 0.4μs delay,
10 : Normal, 11 : 0.4μs forward
0 : Normal, 1 : Low
Normal
OFF
Normal
BELL f0 / ①
S V-ID SW / ①
S GP / ②
SECAM sensitivity switch
SECAM inhibition switch
Enable YS3 to switch to RGB1-IN.
Normal
Normal
Disable
S ID / ①
S-INHBT / ①
RGB1 ENB / ①
0 : Normal, 1 : Inhibited
0 : Disable, 1 : Enable
Refer to FUNCTION DESCRIPTION.
11
2005-08-18
TB1274BFG
ITEM / Number of bits
FUNCTION
VARIABLE RANGE
0 : Auto select
Data of SA 07H D3
0 : Auto Y/C select mode
1 : Auto Comb select mode
PRESET
Auto Video select mode SW
Manual
Select
AUTO SW / ①
Select automatically for CVBS, Y/C
and Comb mode by setting of
“AUTO-SW” and “VIDEO SELECT”.
And also select automatically for 1 : Manual select
C-Trap and S-D Trap.
Refer to FUNCTION DESCRIPTION.
Switching for VP output phase
Y black level set-up
HS Output phase switch
0 : +0.75H, 1 : +0.6875H
+0.75H
Normal
H-Sync
VP-PH / ①
SETUP-SW / ①
HS-PH / ①
0 : Normal, 1 : Set-up
0 : H-Sync(4.7μs),
1 : GP(3.2μs)
－
Factory test mode. Set all zero.
00H
TEST MODE / ⑧
READ MODE
SLAVE ADDRESS : 89H / 8BH / 8FH
ITEM / Number of
bits
H-LOCK / ①
N-DET / ②
FUNCTION
H. Lock detection
Noise judgment
VARIABLE RANGE
0 : Un-lock, 1 : Lock
00 : SN > 40dB,
01 : 10dB > SN,
10 : 40dB > SN > 20dB,
11 : 20dB > SN > 10dB
00 : 4.433619MHz(PAL)
01 : 3.579545MHz(NTSC)
10 : 3.575611MHz(M-PAL)
11 : 3.582056MHz(N-PAL)
00 : B/W, 01 : PAL
10 : NTSC, 11 : SECAM
0 : Normal, 1 : Resistor preset
0 : Low, 1 : High
Crystal mode judgment
X’TAL / ②
COLOR SYSTEM
/ ②
POR / ①
Color system judgment
Power On Reset
Status of pin 15 voltage
V15 / ①
Refer to FUNCTION DESCRIPTION.
Internal V. pulse detection for V. lock 0 : Existing, 1 : Not existing
Input signal condition (Detection of 0 : Not detected (CVBS),
V-SIG / ①
C ID / ①
burst signal on C-IN pins)
1 : Detected (Y/C)
Refer to FUNCTION DESCRIPTION.
Decision on the standard of the 0 : Non-STD, 1 : STD
vertical frequency.
V-STD / ①
When no-signal, 1 : STD is responded.
V-FREQ / ①
Vertical frequency judgment.
Right after power-on, 0 : 50Hz is
responded.
0 : 50Hz, 1 : 60Hz
At no-signal, the last statement is
kept.
The bit for product ident
0 : TB1239**, 1 : TB1274**
SA 01 D0 / ①
12
2005-08-18
TB1274BFG
I2C BUS START-UP PROCEDURE
Just after power-on, TB1274BFG starts tuning automatically. Initially, I2C-BUS decoder works, and then
H-VCO alignment circuit works. The following figure describes the start-up status. While Vcc is lower than
3.4V, Power-On-Reset flag indicates 1. To make TB1274BFG functioning properly, verify that POR bit is 0 by
reading the I2C BUS status data before writing data. POR is released by reading status data. Please refer the
following figure and optimize the software on the set.
1. Power on the device.
2. Read the I2C BUS status bytes until POR bit indicates 0.
3. Write all bytes.
V
typ.Vcc
5
3.8
3.4
H-VCO Internal alignance start
BUS Power ON Reset (POR)
t
Time going
Fig. Start-up status in the IC
13
2005-08-18
TB1274BFG
DATA TRANSFER FORMAT VIA I2C BUS
Slave address : select slave address for setting voltage of pin 42.
Pin42–GND(<1.3V) : 88H
Pin42–Open : 8AH
A6 A5 A4 A3 A2 A1 A0 W / R
0 / 1
A6 A5 A4 A3 A2 A1 A0 W / R
1
0
0
0
1
0
0
0 / 1
1
0
0
0
1
0
1
Pin42–VDD(>3.9V) : 8EH
A6 A5 A4 A3 A2 A1 A0 W / R
0 / 1
1
0
0
0
1
1
1
Start and stop condition
SDA
SCL
S
P
Start condition
Stop condition
Bit transfer
SDA
SCL
SDA stable
Change of SDA allowed
Acknowledge
SDA by
transmitter
The transmitter releases the SDA line (HIGH)
during the acknowledge clock pulse.
SDA by
receiver
The receiver has to pull down the SDA line
(LOW) during the acknowledge clock pulse.
SCL from
master
1
8
9
S
Clock pulse for acknowledgment
Data transmit format 1
S
Slave address
0
0
A
A
1
Sub address
7bit
A
A
Transmit data
8bit
A
P
7bit
MSB
MSB
MSB
Data transmit format 2
S
Slave address
1
Sub address
1
Transmit data 1
A
Sub address
A
Transmit data n
A P
14
2005-08-18
TB1274BFG
Data receive format
S
Slave address
1
A
Received data 00
8bit
A
Received data 01
A P
7bit
MSB
MSB
At the moment of the first acknowledge, the master transmitter becomes a master receiver and the slave
receiver becomes a slave transmitter. This acknowledge is still generated by the slave.
The Stop condition is generated by the master.
Option Data transmit format
Automatic increment mode 1
S
Slave address
0
A
0
Sub address
7bit
A
Transmit data
8bit
A
P
7bit
MSB
MSB
MSB
S : Start condition
A : Acknowledge
P : Stop condition
Automatic increment mode 2
S
Slave address
0
A
0
Sub address
7bit
A
Transmit data 1
8bit
Transmit data n
8bit
A P
7bit
In this transmission method, data is set on automatically incremented sub-address from the specified
sub-address.
I2C BUS Conditions
Characteristics
Low level input voltage
Symbol
Min
Typ.
Max
Unit
V
0
3.8
0
⎯
⎯
⎯
1.3
Vcc
0.4
V
V
V
IL
High level input voltage
V
IH
Low level output voltage at 3 mA sink current
V
OL1
Input current each I/O pin with an input voltage
between 0.1 VDD and 0.9 VDD
I
−10
⎯
10
µA
i
Capacitance for each I/O pin
SCL clock frequency
C
⎯
0
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
10
100
⎯
pF
kHz
µs
µs
µs
µs
ns
i
f
SCL
Hold time START condition
Low period of SCL clock
t
t
4.0
4.7
4.0
4.7
50
HD;STA
t
⎯
LOW
High period of SCL clock
t
⎯
HIGH
Set-up time for a repeated START condition
Data hold time
⎯
SU;STA
HD;DAT
t
⎯
Data set-up time
t
250
4.0
4.7
⎯
ns
SU;DAT
Set-up time for STOP condition
Bus free time between a STOP and START condition
t
⎯
µs
µs
SU;STO
t
⎯
BUF
15
2005-08-18
TB1274BFG
FUNCTION DESCRIPTION
VIDEO SELECT, AUTO-SW
1) “AUTO-SW” = (1) Manual select
When “AUTO-SW” is (1) Manual select, input signal is selected by the BUS as Fig. 1 and Table 1.
Mainly, CVBS-OUT(pin 3) is used for the comb filter input, and Yvi-OUT(pin 11) is used for
synchronization(pin 2). Besides, on chroma line from video SW to main route, the peak detection is done
during the burst period. The result is responded to the Read BUS data, C ID.
VIDEO-SW SECTION
CVBS1/Y1-IN
A
B
C
SW1
SW3
A
CVBS2/Y2-IN
CVBS3/Y3-IN
CVBS-OUT (to Comb filter)
B
6dB
Y
MIX
Yvi-OUT (to SYNC-IN)
Main Y (to Y section)
Main C (to C section)
Chroma ID
C
SW5
A
B
C1-IN
C2-IN
C3-IN
A
B
C
A
B
SW2
A
B
SW4
SW6
0dB
0dB
(from Comb filter) COMB Y-IN
(from Comb filter) COMB C-IN
Fig. 1 Signal route at Video SW section
Table 1 Selected input and pin 3/11 output from Video SW section
BUS
SW mode
To Y/C section
Output from V-SW
DATA
1
A
B
C
A
B
C
A
B
C
－
2
3
A
A
A
B
B
B
A
A
A
－
4
A
A
A
B
B
B
5
A
A
A
A
A
A
B
B
B
－
6
A
A
A
A
A
A
B
B
B
－
Main Y
Main C
CVBS1
CVBS2
CVBS3
C1
C2
C3
COMB C
COMB C
COMB C
CVBS-out
CVBS1
CVBS2
CVBS3
Y1+C1
Y2+C2
Y3+C3
CVBS1
CVBS2
CVBS3
Yvi-out
CVBS1
CVBS2
CVBS3
Y1
Y2
Y3
COMB Y
COMB Y
COMB Y
0000
0001
0010
0100
0101
0110
1000
1001
1010
others
CVBS1
CVBS2
CVBS3
Y1
Y2
Y3
COMB Y
COMB Y
COMB Y
A
B
C
Don’t use.
－
－
16
2005-08-18
TB1274BFG
2) “AUTO-SW” = (0) Auto select
Depending on this function and VIDEO SELECT, can select Auto Y/C select mode or Auto Comb select
mode (Table 2). The input system chose automatically by the sate of color system detection and C-ID
(Chroma ident detection). And C-TRAP and S-D TRAP selected also automatically.
Table 2 The changing Selective Mode
SA07H D3
Selective Mode
Content
0
1
Auto Y/C select
Automatic input select CVBS input or Y/C input
Auto Comb select Automatic input select Y/C-input and comb Y/C-input
Table 3 The changing input system
SA07H D1 SA07H D0 Input system
0
0
1
1
0
1
0
1
CVBS1 system
CVBS2 system
CVBS3 system
Don’t use.
Table 4 The changing input system and The changing TRAP
Selective
Mode
The state of detection
The changing input system
The changing TRAP
C-ID
Color System
Y
C
CVBS-out C-TRAP S-D TRAP
4.43PAL, M/N-PAL,
3.58/4.43NTSC
SECAM
Detected
Y
C
Y + C
CVBS
Y + C
OFF
ON
OFF
ON
Auto Y/C
Select
B/W
4.43PAL, M/N-PAL,
3.58/4.43NTSC
SECAM
Not
detected
CVBS
Y
CVBS
C
B/W
4.43PAL, M/N-PAL,
3.58/4.43NTSC
SECAM
Detected
OFF
OFF
Auto Comb
Select
B/W
4.43PAL, M/N-PAL,
3.58/4.43NTSC
SECAM
Comb-Y Comb-C
CVBS CVBS
CVBS
CVBS
Not
detected
ON
ON
B/W
OFF
OFF
Table 5 The neglecting control items
Item
Content
Neglecting
SA07H D2 (: VIDEO SELECT)
SA05H D5 : C-TRAP
date setting
SA05H D6 : S-D TRAP
Note) Depending on the input signal state, this function may malfunction.
17
2005-08-18
TB1274BFG
EXTERNAL INPUT SWs
External inputs are selected by the BUS data and fast SWs. Final outputs from pin 21/22/23 are shown in
Table 6. RGB1-IN interface complies with SCART connector. Therefore it is active, when RGB1-IN is enable
by the BUS data and when YS3(pin 15) is also high. The status of YS3(pin 15) is responded to the Read BUS
data, V15.
Table 6 Outputs from pin 21/22/23
RGB
SELECT
YS3
YS1
YS2
(RGB2)
RGB1 ENB
Output
(RGB1) (YCbCR2)
L
H
L
H
L
0
1
0
1
0
1
Main
(from V-SW)
00
01
10
RGB1
YCbCr1
RGB1
H
L
L
H
L
H
L
H
－
－
－
－
L
RGB1
－
－
－
－
－
11
－
－
－
H
L
H
YCbCr2
H
RGB2
RGB SELECT/RGB1 ENB : I2C BUS data, YS1/2/3 : Fast SW
COLOR SYSTEM
Distinguishable color systems are selected
by the write BUS data, COLOR SYSTEM.
The demodulated color system is responded
to the read BUS data, COLOR SYSTEM and
Table 7 DC level of pin 45 and 46 on each color system
COLOR SYSTEM
M-PAL
Pin 45
Low
Pin46
Low
X’TAL.
(Refer
to
BUS
CONTROL
4.43PAL,
B/W
3.58/4.43NTSC
N-PAL
SECAM,
High
Low
FUNCTION) The system data is also
responded to Comb SYS(pin 45) and
fsc-OUT(pin 46) as Table 7. If distinguishable
color system signal is not received, the
system data is responded with B/W.
Low
High
High
High
Besides, if pin 7 is connected to VCC(more than 3.5V), Forced SECAM mode is active. In this mode, SECAM
system is identified forcibly. It has priority over the BUS selection.
SECAM BELL FILTER
SECAM bell filter characteristics can be changed by the BUS data, BELL/HPF. The group delay near
chroma band is corrected by changing filter characteristic. As a result, S/N looks better. Besides, center
frequency f0 of bell is changed by BELL f0. Indirectly, it is changed by BPF(TOF) f0.
Normal bell
Boost 2
Boost 1
HPF
Normal bell
(a) Boost mode
(b) HPF mode
Fig.2 SECAM bell filter characteristics
18
2005-08-18
TB1274BFG
VERTICAL COUNT-DOWN
In Automatic of V C/D MODE, the vertical synchronization is controlled by internal PLL. In Fast mode, it is
synchronized with the inputted synchronizing signal and the pull-in time is short. Furthermore the time is
shorter in Very fast mode by the expanded pull-in range. Pull-in range of vertical count-down is determined by
the BUS data, V C/D MODE and V-FREQ as Table 8.
Table 8 V C/D pull-in range
V C/D MODE Normal 1, 2
00, 11
Teletext
01
Fast
10
V FREQ
000
001
010
011
100
101
110
111
Automatic 1
50Hz
224-353H
274-353H
224-297H
224-353H
32-353H
32-353H
32-297H
32-353H
60Hz
Automatic 2
312.5H
262.5H
313H
Forced 312.5H mode & AFC free-run
Forced 262.5H mode & AFC free-run
Forced 313H mode & AFC free-run
Forced 263H mode & AFC free-run
263H
00 ; Normal 1 Normal vertical input mode 1. It is good performance of vertical phase keeping for
standard TV signal sync. And vertical output phase that is detected first time is kept
always. And this mode can detect teletext or VCR skew sync (non-standard sync).
01 ; Teletext
This mode is less performance of vertical phase keeping for standard TV signal sync
against “Normal”. However, pull-in speed is faster few vertical periods than
“Normal”. Therefore this mode is recommended for tesetext sync.
On the other hand, this mode can detect standard TV signal sync in the state of
stability but it is less performance of vertical phase keeping in week signal as about
–3dB against “Normal”.
10 ; Fast
This mode is same performance of vertical phase keeping for standard TV signal sync
of “Teletext”. But it is faster pull-in speed faster than “Teletext” because pull-in ranges
wider than “Teletext”. (refer to Table 8)
Therefore, this mode is better to use when channel changing, but is not recommended
to use in the state of stability or in week signal due to too wide pull-in range and
incorrect actions of vertical keeping appearing.
11 ; Normal 2 Basic detecting function is same as “Normal 1”. And in “Normal 1” mode, the vertical
output phase that is detected first time is kept, however, in this mode, the vertical
output phase is detected always.
Y-DL ADJUSTMENT
Table 9 shows Y output delays against Y input on condition with BPF=f0, Q=2.0, Y-DL=Min and LPF=ON.
Y-out signal can be delayed by the BUS data, Y-DL. The adjustment time of one step is 40ns.
Table 9 Y delays according to the color system
Color system
Y delay (ns)
PAL
450
NTSC
450
SECAM
650
19
2005-08-18
TB1274BFG
PULSES TIMMING
HORIZONTAL PERIOD (Typical output phase of horizontal pulses)
Y input
Delay time
(See Table 5)
Y output
HS output
(HS-PH=0)
0.4us 0.4us
HS output
(HS-PH=1)
2.9us
3.2us
3.7us 2.0us
SCP output
(P/N GW=0)
60Hz : 10.0us
50Hz : 11.3us
2.7us
2.9us
SCP output
(P/N GW=1)
3.2us
20
2005-08-18
TB1274BFG
VERTICAL PERIOD (Typical output phase of vertical pulse)
60Hz ODD
Input
0.75H
VS output
8H
SCP output
15H
60Hz EVEN
Input
0.75H
VS output
8H
SCP output
15H
50Hz ODD
Input
0.75H
VS output
8H
SCP output
20H
50Hz EVEN
Input
0.75H
VS output
8H
SCP output
20H
21
2005-08-18
TB1274BFG
MISCELLANEOUS CHARACTERISTICS
SHARPNESS=OFF, LPF=OFF. Other BUS data is preset, unless otherwise specially.
Sub-contrast characteristic
Sharpness characteristics
2
1.5
1
10
8
MAX
6
4
0.5
0
2
CNT
2.5MHz
3.2MHz
4.0MHz
0
-0.5
-1
-2
-4
-6
-8
-10
MIN
-1.5
-2
-2.5
1
2
3
4
5
6
0
3
6
9
12
15
Frequency [MHz]
BUS data
INPUT : RAMP 0.7Vp-p
Sub-color characteristic
Cb/Cr offset1 characteristic
2
1.5
1
15
10
5
0.5
0
0
-5
-0.5
-1
-10
-15
-20
-1.5
-2
-2.5
0
3
6
9
12
15
0
3
6
9
12
15
BUS data
BUS data
INPUT : 4.43PAL 75% color bar (CVBS1-IN)
Cb/Cr offset2 characteristic
TINT characteristic
40
15
30
20
10
5
10
0
0
-5
-10
-20
-30
-40
-10
-15
-20
0
3
6
9
12
15
0
10
20
30
BUS data
40
50
60
BUS data
INPUT : 3.58NTSC rainbow color bar (CVBS1-IN)
22
2005-08-18
TB1274BFG
ACC characteristics
TOF f0 characteristics
5
0
5
0
-5
-5
-10
-15
-20
-25
-30
-10
-15
-20
-25
NTSC:Killer ON
NTSC:Killer OFF
PAL:Killer ON
-400kHz
0kHz
+400kHz
OFF
PAL:Killer OFF
-50
-40
-30
-20
-10
0
10
1.5
3.5
5.5
7.5
Burst level [dB]
Frequency [MHz]
INPUT : 75% color bar
BUS : Q=1.5
BUS : C-out level=12, Sub-color=0,
BPF=f0, Q=1.5
BPF f0 characteristics
TOF Q characteristics
5
0
5
0
-5
-5
-10
-15
-20
-10
-400kHz
1.0
-15
-20
-25
0kHz
1.5
2.0
2.5
+400kHz
OFF
-25
1.5
3.5
5.5
7.5
0.5
2.5
4.5
6.5
Frequency [MHz]
Frequency [MHz]
BUS : Q=1.5
BUS : BPF=f0
BFP Q characteristics
Bell filter characteristics
5
0
20
10
-5
0
-10
-15
-20
-10
-20
-30
-40
1.0
1.5
2.0
2.5
NORMAL
BOOST1
BOOST2
HPF
-25
0.5
1
2
3
4
5
6
7
8
9
10
2.5
4.5
Frequency [MHz]
6.5
Frequency [MHz]
BUS : BFP=f0
23
2005-08-18
TB1274BFG
C-trap characteristics
10
0
-10
-20
-30
-40
-50
-60
NTSC
SECAM
PAL
S-D trap
2
3
4
Frequency [MHz]
5
6
Y-out level characteristic
C-out level characteristic
1.4
1.2
1
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0.8
0.6
0.4
0.2
0
0
10
20
30
40
50
60
BUS data
0
10
20
30
BUS data
40
50
60
INPUT : RAMP 1.0Vp-p with sync(Y1-IN)
INPUT : 4.43PAL 75% color bar (Cb2-IN)
Cb/Cr-LPF characteristic
Y-LPF characteristic
5
0
5
0
-5
-5
-10
-15
-20
-25
-30
OFF
OFF
ON
-10
-15
-20
-25
ON
0
5
10
15
0
1
2
3
4
5
6
7
Frequency [MHz]
Frequency [MHz]
INPUT : Y1-IN
INPUT : Cb1-IN
24
2005-08-18
TB1274BFG
MAXIMUM RATINGS (Ta＝25℃)
ITEM
SYMBOL
RATING
UNIT
Supply voltage
Signal voltage at each input pin
Power consumption
Power consumption reduction ratio
Operating temperature
Storage temperature
VCC/DDmax
einmax
PD (Note1)
1/θja
5.5
5
1644
13.16
-20～65
V
Vp-p
mW
mW/℃
℃
Topr
Tstg
～
-55 150
℃
(Note1) Put on the circuit board. Refer to the figure below.
1644
13.16mW/
℃
1118
0
0
25
Ambient temperature Ta
Fig. Power consumption reduction against ambient temperature.
65
150
(℃)
(Note2)CAUTION
1. Since this device is susceptible to surge, handle with care. Especially, pin 39 is most weak to surge.
2. Confirm that pins connection is correct. Don’t connect plus pins and minus pins to be opposite polarity.
Refer to Handling Guide to handle ICs properly.
3. This device is not proof enough against a strong E-M field by CRT which may cause function errors and / or
poor characteristics. Keeping the distance from CRT to the device longer than 20cm, or if cannot, placing
shield metal over the device, is recommended in an application.
4. APC characteristics is sensitive to external conditions, please care floating capacitor by patterning and
stray capacitor to X’tal.
4.4350
4.4345
4.4340
4.4335
4.4330
4.4325
4.4320
4.4315
4.4350
4.4345
4.4340
4.4335
4.4330
4.4325
4.4320
4.4315
C1=9pF
C2=0pF
C2=0.5pF
C2=1pF
C1=10pF
C1=11pF
38
38
2.6 2.8
3
3.2 3.4 3.6 3.8
4
2.6 2.8
3
3.2 3.4 3.6 3.8
4
APC terminal voltage [V]
APC terminal voltage [V]
Fig. APC characteristics according to stray capacitor
25
2005-08-18
TB1274BFG
SUPPLY VOLTAGE
ITEM
DESCRIPTION
Pin 6, 12, 32
MIN
4.75
TYP
5.0
MAX
5.25
UNIT
V
Supply voltage
ELECTRICAL CHARACTERISTICS
(YC-VCC/SYNC-VCC/D-VDD=5V and Ta=25℃, unless otherwise specified)
CURRENT CONSUMPTION
PIN
No.
6
12
32
PIN NAME
SYMBOL
MIN
TYP
MAX
UNIT
D VDD
SYNC VCC
Y/C VCC
IDD
ICC1
ICC2
4
9
75
7
13.5
100
15
20
130
mA
AC CHARACTERISTICS
VIDEO SWITCH SECTION
TEST
CONDITION
ITEM
SYMBOL
MIN
TYP
MAX
UNIT
Maximum video input range
CVBS-OUT amplitude gain
Frequency bandwidth
Crosstalk between each input
Y-OUT maximum output range
Cb-OUT maximum output range
Cr-OUT maximum output range
Vdrvi
Gcv
Gfv1
CTvsw
Vdryo
Vdrcbo
Vdrcro
(NOTE V1)
1.4
－
－
－
－
－
－
－
6.0
12
-55
2.2
2.2
2.2
－
－
－
－
－
－
－
Vp-p
dB
MHz
dB
(NOTE V2)
(NOTE V3)
(NOTE V4)
(NOTE V5)
Vp-p
LUMINANCE SECTION
ITEM
TEST
CONDITION
SYMBOL
MIN
TYP
MAX
UNIT
dB
3.58MHz
4.43MHz
SECAM
S double
Gtr3
Gtr4
GtrS
GtrSD
Ysn
25
25
25
25
－
-5
36
36
36
36
60
－
－
－
－
－
－
5
Chroma trap attenuation
(NOTE Y1)
Y S/N ratio
Trap off
MAIN Offs1MAIN
Offs1YCbC
Cb/Cr offset level 1
(NOTE Y2)
－
YCbCr1
r1
-5
5
mV
mV
－
－
RGB1 Offs1RGB1
Offs2
-5
-5
180
5
5
220
Cb/Cr offset level 2
Black set-up
(NOTE Y3)
－
BSETUP
200
26
2005-08-18
TB1274BFG
CHROMA SECTION
ITEM
TEST
CONDITION
3N,CNT
SYMBOL
MIN
TYP
MAX
UNIT
Tθ3NCT
APCp
TINT center
APC pull-in range (4.43MHz PAL)
-10
-400
0
－
10
400
deg
Hz
(NOTE C1)
3N,NORMAL
ON→OFF
3N,LOW,
ON→OFF
4P,NORMAL,
ON→OFF
4P,LOW,
ON→OFF
－
－
－
－
－
－
－
－
KilNNoff
KilNLoff
KilPNoff
KilPLoff
-42.5
-38
Killer operation input level
(NOTE C2)
dB
-45
-40.5
Demodulated Cb and Cr output level
Difference (PAL 75% color ber)
ldNTSC
ldSECAM
V3Nbr
V4Nbr
V4Pbr
ldYCbCr1
ldRGB1
ldYCbCr2
ldRGB2
ResiCarr
Cr(x)/Cr(PAL)
Cb(x)/Cb(PAL)
PAL : Cr/Cb
NTSC : Cr/Cb
SECAM : Cr/Cb
-1.5
-1.5
-1
-1
-1
-2
-2
-2
-2
－
0
0
1.5
1.5
1
1
1
2
2
2
2
dB
dB
－
－
－
－
－
－
－
－
Demodulation relative amplitude (Cb/Cr)
dB
Cr(x)/Cr(PAL)
Cb and Cr output level difference
(PAL 75% color ber)
、
dB
Cb(x)/Cb(PAL)
Demodulation output residual carrier
Demodulation output residual higher
harmonic
(NOTE C3)
(NOTE C4)
20
mVp-p
mVp-p
－
－
ResiHarm
40
3.58N
fsc free-run frequency
4.43P
3fr
4fr
3578700 3579640 3580000
4432600 4433700 4434100
(NOTE C5)
Hz
SECAM SECTION
ITEM
TEST
CONDITION
SYMBOL
MIN
TYP
MAX
UNIT
Cb,CNT SBCbCT
-9
-9
－
－
9
9
SECAM black level adjustment
Linearity
－
－
Cr,CNT
SBCrCT
LinCb
LinCr
trCb
－
－
－
－
－
－
－
－
－
－
－
－
－
5
100
100
0.8
1.2
-42
-39
－
(NOTE S1)
(NOTE S2)
%
μs
Transient characteristic
Killer operation input level
trCr
eSK
eSC
VID OFF
(NOTE S3)
dB
%
－
1H DL gain ratio between direct and delay
gDL
27
2005-08-18
TB1274BFG
SYNCHRONIZING SECTION
ITEM
TEST
CONDITION
Vcc voltage
SYMBOL
MIN
TYP
MAX
UNIT
V
－
－
HS output start voltage
HS output frequency
VSHVCO
fHD50
fHD60
AFCp50
AFCp60
AFCh50
AFCh60
3.6
15.625
15.734
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
15.4
15.4
15.9
15.9
－
－
－
kHz
14.625 15.625 16.625
14.734 15.734 16.734
14.625 15.625 16.625
14.734 15.734 16.734
H AFC pull-in range
H AFC hold range
kHz
kHz
28
2005-08-18
TB1274BFG
TEST CONDITION ( Unless otherwise specified, YC-VCC/SYNC-VCC/D-VDD=5V and Ta=25±3℃ )
NOTE
ITEM
MEASURING METHOD
COMMON TEST CONDITION
① Unless otherwise specified,- Y/C VCC, Sync-VCC and Digital VDD=5V, Ta=25±3℃.
② Set the BUS data preset, unless otherwise specified.
③ Unless otherwise specified, SW33/34/35/39/41=A, ADD SW=B, Y1 SW=A, SYNC SW=A.
COMMON TEST CONDITION FOR LUMINANCE SECTION
VIDEO SWITCH SECTION
① Set the BUS data as Sharpness f0 is.
V1
Maximum video input range
①
Set the BUS data as CVBS1 input is selected.
② Minimize Y-OUT LEVEL via I2C BUS.
2.0Vp-p
Input
③ Input ramp-signal to CVBS1/Y1-IN(pin 1).
④ Measure input range on the right figure at pin21(Y-OUT).
Input
range
Output
V2
V3
CVBS-OUT amplitude gain
Frequency bandwidth
① Set the BUS data as CVBS1 input is selected.
② Input video signal (1.0Vp-p) to CVBS1/Y1-IN(pin 1).
③ Calculate the gain between input signal’s amplitude and amplitude of CVBS-OUT(pin 3).
① Set the BUS data as CVBS1 input is selected.
② Input sweep-signal to pin 1(CVBS1/Y1-IN).
③ Measure the frequency where the ratio between the amplitude of pin 3(CVBS-OUT) and that of pin
1(CVBS1/Y1-IN) is -3dB by network analyzer .
V4
Crosstalk between each input
①
Input Signal 1(f0=4MHz, V0=0.7V, VS=0V) to pin 1(CVBS1/Y1-IN).
② Set the BUS data as CVBS1 input is selected.
③ Short other input pins with AC coupling. Measure the amplitude of pin 3(CVBS-OUT). (V1)
④ Set the BUS data as CVBS2 input is selected via I2C BUS.
⑤ Measure the amplitude of pin 3(CVBS-OUT). (V2)
⑥ Crosstalk level from pin 1 to pin 3 is calculated by the following equation.
CT= 20log(V2 / V1)
⑦ Calculate leak levels on other cases as well.
V5
Y-OUT maximum output range
Cb-OUT maximum output range
Cr-OUT maximum output range
① Set the BUS data as CVBS1 input is selected.
② Maximize Y-OUT LEVEL via I2C BUS.
③ Measure Y output range at Y-OUT(pin 21) in the same as NOTE V1.
④ Measure Cb/Cr output range as well.
29
2005-08-18
TB1274BFG
NOTE
Y1
ITEM
MEASURING METHOD
COMMON TEST CONDITION FOR LUMINANCE SECTION
① Set the BUS data as Y1/C1 input is selected.
LUMINANCE SECTION
Chroma trap attenuation
① Set the BUS data as C TRAP is ON.
② Input signal 1(f0=3.58MHz(NTSC), V0=0.5V, VS=0V) to pin 1(CVBS1/Y1-IN).
③ Measure the amplitude at pin 21(Y-OUT) with the chroma trap being turned on(VTon) and off(VToff).
Calculate the attenuation value as following equation.
Gtr3=20log(VToff / VTon)
④ Calculate the following value in the same way as② to ③.
Gtr4 : f0=4.43MHz(PAL)
GtrS : f0=4.43MHz(SECAM)
GtrSD : f0=5.0MHz(SECAM, S-D TRAP = ON)
Y2
Y3
Cb, Cr offset level 1
Cb, Cr offset level 2
① Input PAL Black Burst signal to pin 1(CVBS1/Y1-IN).
② Monitor Cb or Cr out (pin 22 or 23), and measure voltage between blanking period and picture period as
Offs1MAIN.
③ Set the BUS data as RGB SELECT is YcbCr1 (or RGB1), and measure Offs1YcbCr1(or OffsRGB1) in the
same way as ②.
① Set YS1(pin 24)=2V and Cb2, Cr2-in : no-signal input.
② Monitor Cb or Cr-OUT(pin 22 or 23), and measure voltage between blanking period and picture period as
Offs2.
30
2005-08-18
TB1274BFG
NOTE
C1
ITEM
MEASURING METHOD
COMMON TEST CONDITION FOR CHROMA SECTION
① Set the BUS data as Y1/C1 input is selected via I2C BUS.
② Set the BUS data as BPF f0 is through, Color system is Europe mode and P/N GW is 2.0μs.
① Input color signal(4.43PAL, 100mVp-p) to pin 48(C1-IN).
CHROMA SECTION
APC pull-in/hold range
② Increase its frequency until Cb-OUT at pin 22 is discolored(upper hold range), and decrease its frequency
until Cb-OUT is colored(upper pull-in range).
③ In the same way, decrease its frequency until Cb-OUT is discolored(lower hold range), and increase its
frequency until Cb-OUT is colored(lower pull-in range).
④ Calculate the differences between the frequencies and center frequency(4.43MHz).
C2
Killer operation input level
① Set the BUS data as P/N ID is Normal.
② Input color signal(3.58NTSC) to pin 48(C1-IN).
③ While attenuating the burst signal, measure the burst amplitude when Cb-OUT(pin 22) is discolored.
④ Set P/N ID Low, and measure killer level as well.
⑤ Input 4.43PAL color signal to pin 48, and measure items in the same way as①to④.
C3
C4
Demodulation output residual
carrier
Demodulation output residual
higher harmonic
①
Input 3.58NTSC or 4.43NTSC rainbow color bar signal(burst=100mVp-p) to pin 48(C1-IN).
② Measure sub-carrier leak’s amplitude in Cb signal of pin 22 and Cr signal of pin 23 respectively.
① Input 3.58NTSC or 4.43NTSC rainbow color bar signal(burst=100mVp-p) to pin 48(C1-IN).
② Measure higher harmonic’s amplitude (2fc=7.16MHz or 8.86MHz) in Cb signal of pin 22 and Cr signal of
pin 23 respectively.
C5
fsc free-run frequency
① Input nothing into pin 48(C1-IN).
② Change setting of Color system according to respective frequency modes.
③ Measure frequency of fsc signal of pin 46 respectively.
31
2005-08-18
TB1274BFG
NOTE
ITEM
SECAM SECTION
MEASURING METHOD
COMMON TEST CONDITION FOR SECAM SECTION
① Set the BUS data as Y1/C1 input is selected.
② Input SECAM 75% color bar(R-Y ID=214mVp-p) to pin 48(C1-IN), unless otherwise specified.
Measure the amplitude from black bar levels in output of pin 22 and 23.
② Calculate items by the following equation.
LinCb= V[yellow] / V[blue]×100 (%)
LinCr= V[cyan] / V[red]×100 (%)
S1
S2
Linearity
①
Transient characteristic
① Measure the period shown in the following figure at pin 22(Cb-OUT) and
Green
tTRCb, tTRCr
pin 23(Cr-OUT).
90%
10%
Magenta
S3
Killer operation input level
① Set the BUS data as S-ID is Normal and S V-ID SW is OFF.
② While attenuating the ID signal, measure its R-Y ID amplitude when the killer is ON/OFF as eSK and
eSC.
32
2005-08-18
TB1274BFG
TEST SIGNAL
Color bar
Y signal component
Burst
Burst
Black Burst
Rainbow color bar
180゜150゜120゜90゜60゜30゜0゜-30゜-60゜-90゜
Sweep signal
Sweep signal
Amplitude V0
V sync
Signal 1
Sinusoidal wave
Frequency f0
Amplitude V0
Set-up VS
33
2005-08-18
TB1274BFG
TEST CIRCUIT
T P 2 5
T P 2 6
T P 2 7
S D A
S C L
7 5 Ω
7 5 Ω
7 5 Ω
1 0 0 Ω
1 0 0 Ω
n - i B 1
n i - G 1
n - i R 1
A S D
n i B 1 -
- i n G 1
0 . 1 μ F
0 . 1 μ F
0 . 1 μ F
L
S C
0 . 0 1 μ F
C C V -
S y n c
n i R 1 -
4 7 μ F
+
G N C D - Y /
o u i - t v Y
S C
H S
T P 1 1
T P 2 9
T P 3 0
T P 3 1
S C P
7 5 Ω
7 5 Ω
n i - C r 2
i n b 2 C -
P
i n 2 - C r
0 . 1 μ F
0 . 1 μ F
0 . 1 μ F
7 . 5 k Ω
n i
C b 2 -
H S
7 5 Ω
+
n i - Y 2
D N l - G g i i t D a
S - c r e o d F /
n i - Y 2
F o c e d - S S W
T P 7
4 7 μ F
0 . 0 1 μ F
0 . 0 1 μ F
V C C C - Y /
n
C b - i m C o
0 . 0 1 μ F
n - i B 2
n i - G 2
n - i R 2
V - l D a t D i g D i
n
B 2 - i
3
S W 3
7 5 Ω
4 7 μ F
1 . 8 k Ω
0 . 1 μ F
+
T P 3 3
n
Y b - m i C o
V S
n i - G 2
4
S W 3
7 5 Ω
7 5 Ω
0 . 1 μ F
1 0 k Ω
1 0 k Ω
7 5 Ω
0 . 1 μ F
T P 5
V S
T P 3 4
T P 3 5
n
R 2 - i
5
S W 3
0 . 1 μ F
u t - o
C V B S
) i n - 2 B ( R G
Y / M 2 Y S
t u - o
C V B S
Y / M Y S 2
W S y n S c
0 . 1 μ F
f i l
n i -
S y n c
T P 2
T P 1
n - i Y / 1
C V B S
0 . 1 μ F
1 . 5 k Ω
l a X ' t
n i - y n S c
1 0 p F
1 6 . 2 M H z
1 6 k Ω
6 . 8 k Ω
7 5 Ω
1 . 8 k Ω
1 . 5 k Ω
1 . 8 k Ω
1 . 5 k Ω
6 . 8 k Ω
7 5 Ω
1 . 8 k Ω
1 . 5 k Ω
6 . 8 k Ω
7 5 Ω
1 0 k Ω
1 0 k Ω
1 6 k Ω
6 . 8 k Ω
1 0 k Ω
1 0 k Ω
1 6 k Ω
1 0 k Ω
1 0 k Ω
1 6 k Ω
4 7 μ F
0 . 0 1 μ F
+
7 5 Ω
7 5 Ω
7 5 Ω
7 5 Ω
34
2005-08-18
TB1274BFG
APPLICATION CIRCUIT
S D A
S C L
7 5 Ω
1 0 0 Ω
1 0 0 Ω
B 1 - i n
G 1 - i
S D A
L S C
B 1 - i n
0 . 1 μ F
7 5 Ω
7 5 Ω
n
G 1 - i n
R 1 - i n
0 . 1 μ F
0 . 1 μ F
0 . 0 1 μ F
R 1 - i n
G - N C D Y /
C r 2 - i n
C b 2 - i n
Y 2 - i
S y n c - V C C
Y v i - o u t
4 7 μ F
+
S C P
H S
7 5 Ω
7 5 Ω
P S C
C r 2 - i n
C b 2 - i n
Y 2 - i n
0 . 1 μ F
0 . 1 μ F
0 . 1 μ F
7 . 5 k Ω
H S
7 5 Ω
+
( 2 . 7 k Ω )
n
D N G g i i t D a l -
S
c r e o d - / F
C o m b C - i n
4 7 μ F
0 . 0 1 μ F
0 . 0 1 μ F
0 . 0 1 μ F
C
V - C C Y /
B 2 - i n
G 2 - i
D D V g i i t D a l -
i n - C o m b Y
B 2 - i n
7 5 Ω
7 5 Ω
7 5 Ω
0 . 1 μ F
4 7 μ F
1 . 8 k Ω
+
n
G 2 - i n
0 . 1 μ F
0 . 1 μ F
0 . 1 μ F
1 0 k Ω
1 0 k Ω
V S
R 2 - i n
V S
R 2 - i n
( 6 . 8 k Ω )
7 5 Ω
) n
( R G B 2 - i
Y M Y S 2 /
C V B S - o u t
Y S 2 / Y M
C V B S - o u t
0 . 1 μ F
0 . 1 μ F
l f i
S y n c - i n
Y 1 - i
n
1 . 5 k Ω
1 / B S C V
l a X ' t
1 0 p F
1 6 . 2 M H z
1 6 k Ω
6 . 8 k Ω
7 5 Ω
1 . 8 k Ω
1 . 5 k Ω
6 . 8 k Ω
7 5 Ω
1 . 8 k Ω
1 . 5 k Ω
6 . 8 k Ω
7 5 Ω
1 . 8 k Ω
1 . 5 k Ω
1 0 k Ω
1 0 k Ω
1 6 k Ω
1 0 k Ω
1 0 k Ω
1 6 k Ω
1 0 k Ω
1 0 k Ω
7 5 Ω
1 6 k Ω
6 . 8 k Ω
+
4 7 μ F
0 . 0 1 μ F
7 5 Ω
7 5 Ω
7 5 Ω
35
2005-08-18
TB1274BFG
OUTLINE DRAWING
Unit : mm
QFP48--P-1014-0.80
Weight : 0.83 g (Typ.)
36
2005-08-18
TB1274BFG
37
2005-08-18
相关型号：
©2020 ICPDF网 联系我们和版权申明