Yamaha CDR-HD1500 Service Manual page 35

QQ
3 7 63 1515 0
IC3 : YDC126-F (MAIN P.C.B.)
ACDR
1
/CS
/RD 2
/WR 3
/WAIT 4
/IRQ 5
FSCNT 6
VSS 7
D7 8
D6 9
D5 10
D4 11
D3 12
D2 13
D1 14
D0 15
VSS 16
A7 17
18
A6
A5 19
A4 20
A3 21
A2 22
A1 23
A0 24
VDD 25
26
SRCD1
/IC 27
SPD 28
AES 29
P14 30
P13 31
P12 32
P11 33
34
P10
TE
L 13942296513
P04 35
P03 36
P02 37
P01 38
P00 39
VSS 40
No. Name
1 /CS
2 /RD
3 /WR
4 /WAIT
5 /IRQ
6 FSCNT
7 VSS
8 D7
9 D6
10 D5
11 D4
12 D3
13 D2
14 D1
15 D0
16 VSS
17 A7
18 A6
www
19 A5
20 A4
21 A3
22 A2
23 A1 .
24 A0
25 VDD
26 SRCDI
27 /IC
28 SPD
http://www.xiaoyu163.com
YDC126-F
I/O DC Level Function
I T Microprocessor interface, chip select input
I T Microprocessor interface, read strobe input
I T Microprocessor interface, write strobe input
OD C Wait output
O C Interrupt request output
O$ C Dividing word clock output (Unconnected)
GND
I/O T/C Microprocessor interface, data bus
I/O T/C Microprocessor interface, data bus
I/O T/C Microprocessor interface, data bus
I/O T/C Microprocessor interface, data bus
I/O T/C Microprocessor interface, data bus
I/O T/C Microprocessor interface, data bus
I/O T/C Microprocessor interface, data bus
I/O T/C Microprocessor interface, data bus
GND
I T Microprocessor interface, data bus
I T Microprocessor interface, data bus
I T Microprocessor interface, data bus
I T Microprocessor interface, data bus
x ao u163
I T Microprocessor interface, data bus
y
I T Microprocessor interface, data bus
I i T Microprocessor interface, data bus
I T Microprocessor interface, data bus
Power supply +5V
I+ T (Unconnected)
I T Initial clear input
O C Digital audio interface output (SPDIF)
http://www.xiaoyu163.com
2 9
8
Q Q
3 6 7 1 3 1 5
co
.
CDR-HD1500
9 4 2 8
120
MUTAE
119 MUTSP
118 /CAS
117 /RAS
116 /RWE
115 /ROE
114 VSS
113 RA0
112
RA1
111 RA2
110 RA3
109 RA4
108 RA5
107 RA6
106 VSS
105 RA7
104
RA8
103 RA9
102 RA10
101 RA11
100 RA12
99 VDD
98 RD0
97 RD1
96 RD2
95 RD3
94 RD4
93 RD5
92 RD6
91 RD7
90 VSS
89 RD8
88 RD9
87
RD10
0 5 8 2 9 9 4 2 8
86 RD11
85 RD12
84 RD13
83 RD14
82 RD15
81 VSS
m
9 9
9 9
35