TA1270BFG Datasheet, PDF (26/39 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
SW MODE
00
01
02
03
05 SW1 ―
―
TEST METHOD
(1) Input 4.43 PAL signal 1 rainbow signal (Burst : chroma = 1 : 1) to the
CHROMA input (Pin 6).
C5 PAL Ident Sensitivity
(2) While monitoring the READ BUS “COLOR“, perform the following with
80
80
80
80
80
A
―
―
BUS “P / N-ID“ data = 1 and 0.
or
81
(3) Increase the amplitude of the input signal from 0 mV_p-p and measure the
amplitude at mode change to 4.43 PAL mode.
(Normal (1) ; vPCL, High (0) ; vPCH)
(4) Decrease the amplitude of the input signal from 100 mV_p-p and measure
the amplitude at mode change to 4.43 PAL mode.
(Normal (1) ; vPBL, High (0) ; vPBH)
(1) Input f_sc signal to the chroma input (Pin 6).(signal amplitude = 10 mV_p-p,
f01 = 3.579545 MHz,f02 = 4.433619 MHz)
C6 TOF Characteristics
(2) Set sub address (01) data to (38h). With f01, set sub address (03) data to
(81h) ; with f01, to (83h). Insert a 1.5 kΩ resistor between R-Y output (Pin
80
83
80
81
80
A
―
―
48) and V_CC (5 V). Monitor R-Y output (Pin 48) and perform the following.
or
(3) Measure the output amplitude with f0 and calculate the gain from the
83
input.
(f01 ; GFC3, f02 ; GFC4)
(4) Measure the output amplitude with f0 ± 500 kHz and calculate the gain
from the input.
(f01 + 500 kHz ; GFH3, f01 − 500 kHz ; GFL3,
f02 + 500 kHz ; GFH4, f02 − 500 kHz ; GFL4)
26
2005-08-18