Ic801 Character Generator (Lc74760)/Video Board - Sony MCE-K700 Service Manual

All manuals and user guides at all-guides.com

• IC801 CHARACTER GENERATOR (LC74760)/VIDEO board

Pin No. Pin Name
1 V
SS
2 XTAL IN1
3 XTAL OUT1
4 HSYNC OUT
5 XTAL IN2
6 XTAL OUT3
7 VSYNC OUT
8 CS
9 SIN
10 SCLK
11 SECAM
12 525/625
13 NTSC/PAL
14 3.58/4.43
15 RST
16 CV OUT
17 V
DD2
18 CV IN
19 CV CR
20 SYNC IN
21 SEPC
22 V
SS
23 PD OUT
24 AMP IN
25 AMP OUT
26 FC
27 VCO IN
28 VCO OUT
29 SYNC DET
30 V 1
DD
I/O
– Ground connect pin
Pin for connecting to the capacitor or crystal of oscillator for internal sync signal oscilla-
I
tion applications (Crystal oscilloation for NTSC: 4fsc=14.318MHz)
Pin for connecting to the capacitor or crystal of oscillator for internal sync signal oscilla-
O
tion applications (Crystal oscilloation for NTSC: 4fsc=14.318MHz). Not used (Open).
Pin for outputting horizontal synchronizing signal (AFC). Polarity can be selected (metal
O
option). Not used (Open).
Pin for connecting to capacitor or crystal of crystal oscillator for internal sync signal oscil-
I
lation applications (Crystal oscillation for PAL: 4fsc=17.734MHz)
Pin for connecting to capacitor or crystal of crystal oscillator for internal sync signal oscil-
O
lation applications (Crystal oscillation for PAL: 4fsc=17.734MHz). Not used (Open)
Pin for outputting vertical synchronizing signal. Polarity can be selected. (metal option)
O
Not used (Open)
Enable input pin for serial data input. The serial data input becomes enable at "L". Incorpo-
I
rates a pull-up resistor. (Hysteresis input)
I Serial data input. Incorporates a pull-up resistor. (Hysteresis input)
I Clock input pin for serial data input. Incorporates a pull-up resistor (Hysteresis input)
SECAM mode select switch. "L"=Modes other than SECAM. ("H"=SECAM mode) (Con-
I
nected to ground)
I Pin which switches scanning lines to 525 or 625. ("L"=525 lines. "H"=625 lines)
I Pin which switches the color system to NTSC or PAL. ("L"=NTSC. "H"=PAL)
Pin which switches the FSC to 3.58 MHz or 4.43 MHz. ("L"=3.58. "H"=4.43) (Connected
I
to ground)
System reset input (active=L"). Incorporates a pull-up resistor. (Hysteresis input)
I
O Pin for composite video signal output.
– Pin for power supply for generating composite video signal level.
I Pin for composite video signal input
I SECAM chroma signal input pin. Not used (Open)
I Pin for video signal input terminal for internal sync signal separator
O Pin for output of on-chip sync separator circuit bias. Not used (Open)
– Ground connect pin
O AFC control voltage output pin
I
Filter connect pin
O
I AFC control voltage input pin
I
Pin for connecting LC oscillator coil and capacitor for VCO
O
This pin outputs the exclusive NOR of the horizontal synchronization signal (AFC) and the
O
sync separation signal (SYNC). Not used (Open)
– Power supply (+5V : Digital power supply)
— 73 —
Function