ta1270bfg TOSHIBA Semiconductor CORPORATION, ta1270bfg Datasheet - Page 28

• Manufacturer Part Number: ta1270bfg
• Description: Pal / Ntsc Video Chroma And Sync Processing System For Pip / Pop / Pap
• Manufacturer: TOSHIBA Semiconductor CORPORATION

(Unless otherwise specified, SYNC / SW V
NOTE
S4
S5
S6
S7
S8
Color Difference Gain
(Matrix Mode)
Switch Output
Offset Amount
Y / G Output
Black Level Range
B-Y / B Output
Black Level Range
R-Y / R Output
Black Level Range
CHARACTERISTIC
SUB ADDRESS & DATA
Vari-
able
00
80
80
80
80
CC
Vari-
able
01
83
80
80
80
= 9 V, DAC / C V
Vari-
able
02
81
82
83
80
80
80
or
or
TEST CONDITION
SW10
SW14
SW14
SW14
SW14
SW2
SW2
SW2
SW2
SW2
or
A
A
B
A
A
A
A
A
A
A
A
CC
SW11
= 5 V, preset bus data, Ta = 25°C ± 3°C)
SW6
SW6
SW6
SW6
SW6
or
or
―
―
―
―
―
―
―
―
SW MODE
A
B
A
B
B
B
B
B
28
SW14
SW8
SW7
SW7
SW7
SW7
or
―
―
―
―
―
―
―
―
B
A
A
B
B
B
B
SW16
SW9
SW8
SW8
SW8
SW8
or
―
―
―
―
―
―
―
―
―
B
A
B
B
B
B
(1) Same as (1) and (2) for S2 above.
(2) Change the sub address (05) data to PAL (81h), NTSC1 (82h), and
(3) Measure the amplitude of Y / G output, B-Y / B output, R-Y / R output,
(1) Input signal 2 to Yin2.
(2) Apply DC = 5 V to Ys input (Pin 32).
(3) Change the sub address (04) data from (80h) to (88h) and measure DC
(1) Same as (1) and (2) for S1 above.
(2) Change the sub address (04) data from (80h) to (F0h) and measure the
(3) Change the sub address (04) data from (88h) to (F8h) and from (88h) to
(1) Same as (1) and (2) for S1 above.
(2) Change the sub address (06) data from (80h) to (00h) and measure the
(3) Change the sub address (04) data to (88h) and measure ∆VBO+ and
(1) Same as (1) and (2) for S1 above.
(2) Change the sub address (05) data from (80h) to (00h) and measure the
(3) Change the sub address (04) data to (88h) and measure ∆VRO+ and
NTSC2 (83h), perform the following.
then calculate the gain from the input.
(Y1~Y / G : PAL ; GGYP, NTSC1 ; GGYN1, NTSC2 ; GGYN2
Y1~B-Y / B : PAL ; GBYP, NTSC1 ; GBYN1, NTSC2 ; GBYN2
Y1~R-Y / R : PAL ; GRYP, NTSC1 ; GRYN1, NTSC2 ; GRYN2)
variation ∆VYO, ∆VBO, and ∆VRO of Y / G output, B-Y / B output, and
R-Y / R output picture period.
DC variation ∆VYB+ of the Y / G output (Pin 20) picture period. Also
change the data from (80h) to (00h) and measure the DC variation
∆VYB−.
(08h), then measure ∆VYO+ and ∆VYO−.
DC variation ∆VBB+ of the B-Y / B output (Pin 21) picture period. Also
change the data from (80h) to (F8h) and measure the DC variation
∆VBB−.
∆VBO− same as (2) above.
DC variation ∆VRB+ of the R-Y / R output (Pin 22) picture period. Also
change the data from (80h) to (F8h) and measure the DC variation
∆VRB−.
∆VRO− same as (2) above.
TEST METHOD
TA1270BFG
2005-08-18