U: IC, LC74763M-9670
Pin No.Pin NameI/ODescription
1VSS-Ground connection.
2XTAL IN1Connection for the crystal and capacitor used to form the crystal oscillator that generates the
I/O
3XTAL OUT1internal synchronization signal. The oscillator can be selected with a command switch.
Outputs the horizontal synchronization signal (AFC). The output polarity can be selected
4HSYNC OUTO
(metal option). Also functions as general output port (command switch). (Not connected)
5XTAL IN2Connection for the crystal and capacitor used to form the crystal oscillator that generates the
I/O
6XTAL OUT2internal synchronization signal. (Not connected)
Outputs the vertical synchroization signal. The output polarity can be selected (metal option).
7VSYNC OUTO
Also functions as general output port (command switch). (Not connected)
Enables/disables serial data input. Serial data is enabled when this pin is low (hysteresis input).
8CSI
Pull-up resistor built in (metal option).
9SINISerial data input (hysteresis input). Pull-up resistor built in (metal option).
10SCLKIClock input for serial data input (hysteresis input). Pull-up resistor built in (metal option).
During input, switches between SECAM and other modes.
11SECAMI/ODuring output, functions as general output port or internal V output (command switch).
Low = other modes, High = SECAM mode
During input, switches between 525 scan lines and 625 scan lines.
12525/625I/ODuring output, functions as general output port or character data output (command switch).
Low = 525 lines, High = 625 lines
Switches the color mode between NTSC and PAL.
13NTSC/PALI/ODuring output, functions as general output port or frame data output (command switch).
Low = NTSC, High = PAL
Switch FSC between 3.58 MHz and 4.43 MHz.
143.58/4.43I/ODuring output, functions as general output port or halftone output (command switch).
Low = 3.58, High = 4.43
System reset input pin, low is active (hysteresis input).
15RSTI
Pull-up resistor built in (metal option).
16CV OUTOComposite video output.
17VDD2-Power supply connection for composite video signal level generation.
18CVINIComposite video input.
19CVCRISECAM chroma signal input. (Not connected)
20SYNC INIBuilt-in sync separator circuit video signal input.
21SEPC-Built-in sync separator circuit.
22VSS-Ground connection.
23PD OUTOAFC control voltage output.
24AMP IN
-Filter connection.
25AMP OUT
26FCIAFC control voltage input.
27VCO IN
I/OVCO LC oscillator circuit coil and capacitor connection.
28VCO OUT
� 54 � |
ACEC
