TA1370FG Datasheet, PDF (26/42 Pages) Toshiba Semiconductor – SYNC Processor, Frequency Counter IC for TV Component Signals

Note
Item
HA02 HD3 input horizo
ntal sync phase
HA03 Polarity distinction active range
TA1370FG
SW Mode
S07 S23 S24 S26
Test Conditions and Measuring Method (V_CC = 9 V, Ta = 25 ± 3°C, unless otherwise specified)
c
b

 (1) Set sub-address (00) 40 and (02) 02.
(2) Input signal b (horizontal 31.5 kHz) to pin 14 (HD3-IN).
(3) Measure the phase difference HD_3PH between pin 14 and pin 7 (AFC filter) wave form.
Signal b
31.75 µs
2.35 µs
1.5 V
Pin 7 wave form
HD_3PH
c
b

 (1) Set sub-address (00) 40 and (02) 02.
(2) Input signal b ((horizontal 31.5 kHz) to pin 14 (HD3-IN).
(3) Decreasing the duty of signal b to 0% (get negative period shorter), measure the duty of Signal b
(HD-DUTY1) when the phase between pin 14 and pin 16 (HD1-OUT) change.
(4) Increasing the duty of Signal b to 100% (get negative period longer), measure the duty of Signal b
(HD-DUTY2) when the phase between pin 14 and pin 16 (HD1OUT) change.
Signal b
31.75 µs
2.35 µs
1.5 V
B
A
* duty = A/(A + B) × 100 (%)
26
2003-02-19