Yamaha GX-700 Service Manual page 31

IC11 : M38199EF [P.C.B. CD/VCD]
µ
8 bit -COM (CD CPU)
Pin No. Port
85 P83
86 P82
87
P81
88
P80
89 PA7
90 PA6
91 VCC
92 PA5
93 PA4
94
PA3
95 PA2
96 PA1
97 PA0
98 VEE
99 AVSS
100
VREF
IC8 : M38199EF [P.C.B. INPUT]
µ
8 bit -COM (SYSTEM CPU)
No. Port Name
1 AN7 MSEL
2 AN6 SPEIN
3 DSEL
AN5
4 AN4 KEY4
5 AN3 KEY3
6 AN2 KEY2
7 AN1 KEY1
8 AN0 KEY0
9
PB3
10 DA FAN
11 AN15 THER
12 SCLK3 FLCLK
13 SO3 FLDATA
14 SI3
15 VPRT
AN11
16 SCLK2 TUCLK
17 SO2 TUDO
18 SI2 TUDATA
19 P67 /STAD
20 SCLK1 SYSCK
21 SO1 SYSO
22 SI1 SYSI
23 P63 TUMUTE
24 P62 /AMPMUTE
25 P61 CDCE
26 P60 CDRES
27 P47 MDCE
Name I/O
O Not used
O Not used
O
Not used
O
Not used
O Not used
O Not used
VCC +5V
O Not used
O Not used
O
Not used
O Not used
O Not used
O Not used
VEE GND
AVSS GND (VSS)
VREF
+5V (VCC)
I/O
I MODEL/PRO LOGIC MODE DETECT
I SPECTRUM ANALYZER (BA3835F) IN (A-D)
I MARKET SELECT IN
I KEY 4 IN
I KEY 3 IN
I KEY 2 IN
I KEY 1 IN
I KEY 0 IN
OPEN
O FAN CONTROL OUT
I AMP THERMAL DETECT
O SERIAL CLOCK FOR FL DRIVER M66004
O SERIAL OUT FOR FL DRIVER M66004
OPEN
I ABNORMAL VOLTAGE DETECT
O LC72131/LC72720/M65853FP/LA2787/LV1017/LC75393/LC7536Y CLK OUT
O LC72131/LC72720/M65853FP/LA2787/LV1017/LC75393/LC7536Y DATA OUT
I LC72131/LC72720 DATA IN
I STATION IN (TUNER)
O SYSTEM COMMAND CLOCK
O SYSTEM COMMAND OUT
I SYSTEM COMMAND IN
O TUNER MUTE
O AMP MUTE
O SYSTEM COMMUNICATION CD CE
O CD RESET
O SYSTEM COMMUNICATION MD CE
GX-700/GX-700VCD
Function
Function
(A-D)
(A-D)
(A-D)
(A-D)
(A-D)
(A-D)
(A-D)
[L : STATION AVAILABLE]
[H : MUTE ON]
[L : MUTE ON]
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