LV76223A3F Datasheet, PDF (26/47 Pages) Sanyo Semicon Device – For PAL/NTSC/SECAM Color Television Sets VIF/SIF/Y/C/Deflection /CbCr IN Implemented in a Single Chip

LV76223A3F
•Deflection Block Input Signals and Test Conditions
Unless otherwise specified，the following conditions apply when each measurement is made.
1. VIF, SIF blocks: No signal
2. C input: No. signal
3. Sync input: A horizontal/vertical composite sync signal
PAL: 43IRE, horizontal sync signal (15.625kHz) and vertical sync signal (50kHz)
NTSC: 40IRE, horizontal sync signal (15.734264kHz) and vertical sync signal (59.94kHz)
Note: No burst signal, chroma signal shall exist below the pedestal level.
Signal unsuitable
for Y input
Signal suitable for
Y input
Chroma signal
Burst signal
4. Bus control conditions: Initial conditions unless otherwise specified．
5. The delay time from the rise of the horizontal output (pin 23 output) to the fall of the FBP IN (pin 23 input) is 7μs.
6. Pin 15 (vertical size correction circuit input terminal) is connected to VCC (5.0V).
Parameter
[Deflection block]
Horizontal free-running
frequency
Horizontal pull-in range
Symbol Test point Input signal
Test method
Bus conditions
fH
fH PULL
YIN:
22 _{No signal}
Connect a frequency counter to the output of pin 22 (H out)
and measure the horizontal free-running frequency.
YIN: Horizontal Using an oscilloscope, monitor the horizontal sync signal
22 _{/vertical sync}
which is input to the Y IN (pin 5) and the pin 22 output (H
signal
out) and vary the horizontal signal frequency to measure
5 ^PAL
the pull-in range.
Horizontal output
pulse length
Hduty
Horizontal output pulse saturation V Hsat
voltage
Vertical free-running
period 50(PAL)
Vertical free-running
period 60(NTSC)
VFR50
VFR60
YIN: Horizontal Measure the voltage for the pin 22 horizontal output
22 /vertical sync pulse’s
signal
low-level period.
PAL
YIN: Horizontal Measure the voltage for the pin 22 horizontal output
22 /vertical sync pulse’s
signal
low-level period.
PAL
YIN:
17 No signal
Measure the vertical output period T at pin 17.
T × 15.625kHz (PAL)
T × 15.734kHz (NTSC)
Vertical ramp output
2.5V
CDMODE:001
(PAL)
CDMODE:010
(NTSC)
T
Horizontal output pulse
(PAL)(NTSC)
HPHCEN
(PAL)
(NTSC)
Y IN:
22 Horizontal
/vertical sync
5
signal
PAL
NTSC
Measure the delay time from to the rise of the pin 22
horizontal output pulse to the fall of the Y IN
horizontal sync signal.
Measuring
HPHCEN
20IRE
2.5V
Horizontal output
No.A1938-26/47