AlphaPC 164UX Connector Pinouts
4–5
EIDE Drive Bus Connector Pinouts
4.4 EIDE Drive Bus Connector Pinouts
Table 4–4 shows the EIDE drive bus connector pinouts.
1
Pins 1 through 84 are on the front side and pins 85 through 168 are on the back side.
2
The AlphaPC 164UX uses BA1 as both BA1 and ADDR12. Therefore, four-bank DIMMs using
ADDR<11:0> are the maximum size. (Two-bank DIMMs can use ADDR<12:0>.)
3
Pull-down.
125
CK1
126
BA1
2
127
Gnd
128
CKE0
129
S3
130
DQMB6
131
DQMB7
132
PD
3
133
3.3V
134
NC
135
NC
136
CB6
137
CB7
138
Gnd
139
DQ48
140
DQ49
141
DQ50
142
DQ51
143
3.3V
144
DQ52
145
NC
146
NC
147
PD
148
Gnd
149
DQ53
150
DQ54
151
DQ55
152
Gnd
153
DQ56
154
DQ57
155
DQ58
156
DQ59
157
3.3V
158
DQ60
159
DQ61
160
DQ62
161
DQ63
162
Gnd
163
CK3
164
NC
165
SA0
166
SA1
167
SA2
168
3.3V
Table 4–4 EIDE Drive Bus Connector Pinouts (J24)
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal
1
RESET
2
Gnd 3
IDE_D7
4
IDE_D8
5
IDE_D6
6
IDE_D9
7
IDE_D5
8
IDE_D10
9
IDE_D4
10
IDE_D11
11
IDE_D3
12
IDE_D12
13
IDE_D2
14
IDE_D13
15
IDE_D1
16
IDE_D14
17
IDE_D0
18
IDE_D15
19
Gnd
20
NC (key pin)
21
MARQ
22
Gnd 23
IOW
24
Gnd
25
IOR
26
Gnd 27
CHRDY
28
BALE
29
MACK
30
Gnd 31
IRQ
32
IOCS16
33
ADDR1
34
NC
35
ADDR0
36
ADDR2
37
CS0
38
CS1
39
ACT
40
Gnd
Table 4–3 SDRAM DIMM Connector Pinouts (U3 through U8)
1
(Sheet 2 of 2)
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal