ta1270bfg TOSHIBA Semiconductor CORPORATION, ta1270bfg Datasheet - Page 24

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

TEST METHODS
Video block
NOTE
V1
V2
Y Input to Y Output AC Gain
Y Output Offset Amount
CHARACTERISTIC
(Unless otherwise specified, SYNC / SW V
00
80
80
SUB ADDRESS & DATA
01
80
0
02
80
84
80
or
TEST CONDITION
03
80
80
CC
= 9 V, DAC / C V
05
80
80
81
or
24
SW1
B
B
SW MODE
SW2
A
A
CC
SW12
A
A
= 5 V, preset bus data, Ta = 25°C ± 3°C)
(1) Input signal 2 to Y input (Pin 40) and Yin2 input.
(2) Change the sub address (02) data to TRAP-OFF (80h) and TRAP-ON
(3) Measure the picture period amplitude (v37) of the Y output (Pin 37) and
(1) Input signal 2 to Y input (Pin 40) and Yin2 input.
(2) Set the sub address (01) data to 00 and measure the minimum potential
(3) Set the sub address (05) data to Y-OFST-ON (81), measure the minimum
(f
(84h) and perform the following :
determine the gain from Y input.
(f
(VYO1) of the Y output (Pin 37) picture period amplitude.
potential (VYO2) of the Y output picture period amplitude, and determine
the difference from VYO1.
0
0
= 100 kHz, picture period amplitude = 0.2 V
GYs, GYt = 20
(GYs ; TRAP-OFF, GYt ; TRAP-ON)
= 100 kHz, picture period amplitude = 0.2 V
VYO = VYO2 − VYO1
l
og
(v37 / 0.2)
TEST METHOD
p-p
p-p
)
)
TA1270BFG
2005-08-18