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4–10 AlphaPC 164SX Connector Pinouts
Multipurpose Connector Pinouts
Figure 4–1 Multipurpose Connector Pinouts
5 HD_PU Hard drive power-up
6 HD_LED Pull-up to Vdd
7 No connection
8 POWER_LED_L Pull-up to Vdd
10, 12, 14, 16 Gnd
9 SPKR Speaker output
15 Vdd
11, 13 No connection
Table 4–14 Multipurpose Connector Pinouts (J20)
(Sheet 2 of 2)
Pin Signal Description
12
3
4
56
78
910
11 12
13 14
15 16
HALT_BUTTON
RESET_BUTTON
HD_LED
POWER_LED_L
HD_PU
SPKR
Vdd
J20