Compaq AlphaPC 164LX - Manual (Page 27)

AlphaPC 164LX 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.
125 CK1 126 BA1
2
127 Gnd 128 CKE0
129 S3 130 DQMB6 131 DQMB7 132 PD
3
133 +3V 134 NC 135 NC 136 CB6
137 CB7 138 Gnd 139 DQ48 140 DQ49
141 DQ50 142 DQ51 143 +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 +3V 158 DQ60 159 DQ61 160 DQ62
161 DQ63 162 Gnd 163 CK3 164 NC
165 SA0 166 SA1 167 SA2 168 +3V
1
Pins 1 through 84 are on the front side and pins 85 through 168 are on the back side.
2
The AlphaPC 164LX 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.
Table 4–4 EIDE Drive Bus Connector Pinouts (J6, J7)
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 (J8 through J11)
1
(Continued)
Pin Signal Pin Signal Pin Signal Pin Signal