TA1270BFG Datasheet, PDF (28/39 Pages) Toshiba Semiconductor – PAL / NTSC VIDEO CHROMA AND SYNC PROCESSING SYSTEM FOR PIP / POP / PAP

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