Sony RM-E700 - CG Control Microcomputer Port

3-5. CG CONTROL MICROCOMPUTER (CXP80316: IC102 on MC-67 Board)
PORT FUNCTIONS AND INPUT/OUTPUT LEVEL
Pin No. | Signal “a Function
1 KO6 oO
| | | Key scan signal output.
10 KO15 oO
11 KI7 I
| | Key scan signal input.
18 KIO I
19 Cc. CS oO Chip select signal to CG IC (1C504 on VI-60 board).
Chip select signal to digital memory control IC (IC502 on VI-60
board).
GRAYOUT Oo Gray back signal output.
RESET O Reset signal to CG/digital memory control IC.
a
23 LEDINS Oo Drive signal output of INS LED.
24 LEDCAP Oo Drive signal output of CAPITAL LED.
25 LEDSHIFT O Drive signal output of SHIFT LED. |
Vss ~ GND terminal.
Notused.
Crystal connection terminal for system clock oscillation.
30 RESET I Reset signal input. |
Not used.
Not used.
33 —_—— I Not used, |
sO O Serial out to main microcomputer (IC206 on MC-67 board). :
SI J Serial in from main microcomputer. :
CLK O Serial clock from main microcomputer, |
Serial chip select from main microcomputer.
38 NT/PAL I NTSC/PAL select signal.
39 oo ) |
| | | Not used.
46 —- O
47 CD SO O Serial out to CG/digital memory control IC.
48 CD SCK Serial clock to CG/digital memory control IC.
Busy signal from digital memory control IC.
Signal from digital memory 2/4 changeover switch.
V SYNC input.
Discrimination input signal on presence of external signal output.
EXT/INT
L~>H: Falla sleep, H > L: Get up
P.FAIL
Not used.
—39— |