Yamaha AW4416, Service Manual

Page: 88 / 154

47
AW4416
Ground
Serial data input
Ground
Not used
DRAM address bus
Ground
DRAM address bus
Power 3.3V
Not used
Test pin
Power 3.3V
Ground
CPU address bus
Ground
Power 5V
Ground
CPU data bus
Ground
CPU data bus
Power 5V
CPU data bus
Ground
CPU data bus
Ground
Power 5V
CPU data bus
Ground
CPU chip select
CPU read
CPU write
CPU interrupt request
Bus acknowledge
Bus request
Gate enable
Power 5V
Ground
Reset
Ground
Power 3.3V
I
I
I
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I
I
O
I
O
O
I
GND
GND
GND
SI0
SI1
SI2
SI3
GND
NC
DA13
DA12
DA11
DA10
DA9
DA8
DA7
DA6
GND
DA5
DA4
DA3
DA2
DA1
DA0
V
DD
NC
TEST
SCANENB
TESTMOD0
TESTMOD1
V
DD
GND
CA1
CA2
CA3
CA4
CA5
GND
GND
GND
V
DD
V
DD
V
DD
GND
CD0
CD1
CD2
CD3
GND
CD4
CD5
V
DD
CD6
CD7
GND
CD8
CD9
CD10
CD11
GND
V
DD
CD12
CD13
CD14
CD15
GND
CCSN
CRDN
CWRN
CINTN
BACKN
BREQN
IDEGEN
V
DD
GND
RESETN
GND
V
DD
V
DD
V
DD
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
I
I
I
O
O
O
O
O
O
O
GND
GND
GND
NC
NC
NC
DD0
DD1
DD2
DD3
DD4
DD5
DD6
DD7
GND
DD8
DD9
DD10
DD11
V
DD
DD12
DD13
DD14
DD15
GND
DWE
DRAS
DCAS
DQM
SDRCS0
SDRCS1
V
DD
GND
SDRCLK
NC
NC
V
DD
GND
GND
GND
V
DD
V
DD
V
DD
XD0
XD1
XD2
XD3
XD4
XD5
XD6
XD7
XD8
XD9
GND
XD10
XD11
V
DD
XD12
XD13
XD14
XD15
XDWRN
XDRDN
XDACKN
XDREQN
GND
CK512FS
GND
FS
SO0
SO1
SO2
SO3
SO4
SO5
SO6
V
DD
V
DD
V
DD
V
DD
Ground
Not used
DRAM data bus
Ground
DRAM data bus
Power 3.3V
DRAM data bus
Ground
DRAM write
DRAM row address strobe
DRAM column address strobe
DATA MASK
DRAM chip select
Power 3.3V
Ground
DRAM clock
Not used
Power 3.3V
Ground
Power 5V
SCSI data bus
Ground
SCSI data bus
Power 5V
SCSI data bus
Write
Read
DMA acknowledge
DMA request
Ground
Clock
Ground
Clock
Serial data output
Power 5V
Power 3.3V
PIN
NAME I/O FUNCTION
NO.
PIN
NAME I/O FUNCTION
NO.
CI-DRC (XY629A00) Gate Array
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MAIN: IC830
1
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6
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8
9
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11
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13
14
15
16
17
18
19
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64
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71
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77
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79
80
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