Yamaha MCX-1000 Service Manual page 40

MCX-1000
IC301 : YDC130-F (MAIN P.C.B.)
ACDR3
/CS 1
/RD 2
/WR 3
/WAIT 4
/IRQ 5
VSS 6
D0 7
D1 8
D2 9
D3 10
D4 11
D5 12
D6 13
D7 14
VDD 15
D8 16
D9 17
D10 18
D11 19
D12 20
21
D13
D14 22
D15 23
VSS 24
A0 25
A1 26
A2 27
A3 28
A4 29
A5 30
A6 31
A7 32
P0 33
P1 34
P2 35
P3 36
P4 37
P5 38
P6 39
P7 40
Pin No. Terminal Name
1 /CS
2 /RD
3 /WR
4 /WAIT
5 /IRQ
6 VSS
7 D0
8 D1
9 D2
10 D3
11 D4
12 D5
13 D6
40
YDC130-F
I/O DC Level
I T Microcomputer interface
I T Microcomputer interface
I T Microcomputer interface
OD C Wait output
O C Interrupt request output
GND
I/O T/C Microcomputer interface
I/O T/C Microcomputer interface
I/O T/C Microcomputer interface
I/O T/C Microcomputer interface
I/O T/C Microcomputer interface
I/O T/C Microcomputer interface
I/O T/C Microcomputer interface
Function
Chip select input
Read strobe input
Write strobe input
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
Data bus
120 RD15
119 RD14
118 RD13
117 RD12
116 RD11
115 RD10
114 RD9
113 RD8
112 VSS
111 RD7
110 RD6
109 RD5
108 RD4
107 RD3
106 RD2
105
RD1
104 RD0
103 VDD
102 RA12
101 RA11
100 RA10
99 RA9
98 RA8
97 VSS
96 RA7
95 RA6
94 RA5
93 RA4
92 RA3
91 RA2
90 RA1
89 RA0
88 VSS
87 /CAS
86 /RAS
85 /RWE
84 /ROE
83 VSS
82 MUTEB
81 MUTEA