Compaq AlphaPC 164SX - Manual (Page 33)

System Configuration and Connectors 2–13
AlphaPC 164SX Connector Pinouts
2.7.9 SROM Test Data Input Connector Pinouts
Table 2–10 shows the SROM test data input connector pinouts.
2.7.10 Input Power Connector Pinouts
Table 2–11 shows the input power connector pinouts.
2.7.11 Enclosure Fan Power Connector Pinouts
Table 2–12 shows the enclosure fan power connector pinouts.
1 This pinout is ATX-compliant.
Table 2–10 SROM Test Data Input Connector Pinouts (J21)
Pin Signal Description
1 NC —
2 SROM_CLK_L Clock out
3 Gnd —
4 NC —
5 TEST_SROM_D_L SROM serial data in
6 NC —
Table 2–11 Input Power Connector Pinouts (J2)
1
Pin Voltage Pin Voltage Pin Voltage Pin Voltage
1 +3.3 V dc 2 +3.3 V dc 3 Gnd 4 +5 V dc
5 Gnd 6 +5 V dc 7 Gnd 8 P_DCOK
9 5 V SB 10 +12 V dc 11 +3.3 V dc 12 –12 V dc
13 Gnd 14 PS_ON 15 Gnd 16 Gnd
17 Gnd 18 –5 V dc 19 +5 V dc 20 +5 V dc
Table 2–12 Enclosure Fan (+12 V dc) Power Connector Pinouts (J16)
Pin Voltage
1 Gnd
2 +12 V dc
3 Gnd