AlphaPC 164SX Connector Pinouts 4–9

Microprocessor Fan Power Connector Pinouts

4.12 Microprocessor Fan Power Connector Pinouts
Table 4–12 shows the microprocessor fan power connector pinouts.
4.13 Soft Power Connector Pinouts
Table 4–13 shows the soft power connector pinouts.
Table 4–13 Soft Power Connector Pinouts (J1)
4.14 Multipurpose Connector Pinouts
J20 is a multipurpose connector that provides pins for the following functions:
•System speaker
•LEDs for power and the EIDE drive
•Buttons for reset and halt
Table 4–14 shows the multipurpose connector pinouts, and Figure 4–1 shows the
connector layout.
Table 4–12 Microprocessor Fan Power Connector Pinouts (J14)
Pin Signal Description
1 +12 V dc —
2FAN_CONN_L Fan connected
3Gnd —
Pin Signal Description
1Input System power on/off
2Gnd —
Table 4–14 Multipurpose Connector Pinouts (J20)
(Sheet 1 of 2)
Pin Signal Description
1Gnd —
2HALT_BUTTON Halt system
3Gnd —
4RESET_BUTTON Reset system