Yamaha A-S700 Service Manual page 27

Pin
Port Name
No.
1 P96/ANEX1
2 P95/ANEX0
3 P94
4 P93
5 P92/TB2in
6 P91/TB1in
7 P90/TB0in
8 BYTE
9 CNVss
10 P87/Xcin
11 P86/Xcout
12 /RESET
13 Xout
14 Vss
15 Xin
16 Vcc1
17 P85/NMI
18 P84/INT2
19 P83/INT1
20 P82/INT0
21 P81
22 P80
23 P77
24 P76
25 P75/TA2in
26 P74/TA2out
27 P73/CTS2/RTS2/TA1in
28 P72/CLK2/TA1out
29 P71/RXD2/SCL2/TA0in
30 P70/TXD2/SDA2/TA0out
31 P67/TXD1/SDA1
32 P66/RXD1/SCL1
33 P65/CLK1
34 P64/CTS1/RTS1/CTS0/CLKS1
35 P63/TXD0/SDA0
36 P62/RXD0/SCL0
37 P61/CLK0
38 P60/CTS0/RTS0
39 P57/RDY/CLKout
40 P56
41 P55
42 P54
43 P53
44 P52
45 P51
46 P50
47 P47
48 P46
49 P45
50 P44
51 P43
52 P42
53 P41
54 P40
55 P37
Function Name I/O
O
O
O
DEST1 I
DEST0 I
MOD1 I
MOD0 I
BYTE MCU Vss: when single chip mode is used
Vss: when single chip mode is used
MCU CNVss
Vcc: when flash writing is used
/CEEEP O EEPROM CE
O
/RESET MCU Reset
Xout MCU Oscillator out
Vss MCU Ground
Xin MCU Oscillator in
Vcc MCU Power supply, +5V
NMI I Connect to vcc because it is unused
/POMT O Pre out mute
LED_SP O POWER indicator
PDET IRQ Power down detect
O
O
O
/POMT O
/Z2MT O
O
XMPWR O
/ICXM O
DRXM SI
DTXM SO
DTEV SO
TXDF SO
CEEV O
RXDF SO
CKEV SO
CLKF SO
BSY O
DTIS SO Input selector Tx DATA
CEIS O Input selector CE
CKIS SO Input selector CLOCK
DTRZ O Rec selector DATA
CKRZ O Rec selector CLOCK
O
/EMP I For flash writing (LO)
CER O
SCKR O
SDRR I
SDTR O
/CE I For flash writing (HI)
CEP O
SCKP O
SDTP O
/TMU O
SDRP I+
TUNED I+
/ST I+
O
LED_PHO O Input indicators (PHONO)
Detail of Function
A-S700
(Gnd)
(Pull down)
(Gnd)
(Vcc)
(Pull up)
(Pull down)
(Pull up)
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