Alcor AU9440, Technical Reference Manual, Page: 10 / 30

PIN ASSIGNMENT 6
Table 3-1. Pin Description
Pin No. Pin Name IO Type Description
1 VCC5V Power Supply 5v power supply
2 XTAL_1 INPUT 6MHz crystal, input
3 XTAL_2 OUTPUT 6MHz crystal, output
4 SCANR_1 INPUT/OUTPUT, PULL DOWN Row/Scan line
5 SCANR_2 INPUT/OUTPUT, PULL DOWN Row/Scan line
6 SCANR_3 INPUT/OUTPUT, PULL DOWN Row/Scan line
7 SCANR_4 INPUT,PULL UP, PULL DOWN Row/Scan line
8 SCANR_5 INPUT,PULL UP, PULL DOWN Row/Scan line
9 SCANR_6 INPUT,PULL UP, PULL DOWN Row/Scan line
10 SCANR_7 INPUT,PULL UP, PULL DOWN Row/Scan line
11 SCANR_8 INPUT,PULL UP, PULL DOWN Row/Scan line
12 SCANR_9 INPUT,PULL UP, PULL DOWN Row/Scan line
13 SCANR_10 INPUT,PULL UP, PULL DOWN Row/Scan line
14 SCANR_11 INPUT,PULL UP, PULL DOWN Row/Scan line
15 SCANR_12 INPUT,PULL UP, PULL DOWN Row/Scan line
16 SCANR_13 INPUT,PULL UP, PULL DOWN Row/Scan line
17 SCANR_14 INPUT,PULL UP, PULL DOWN Row/Scan line
18 SCANR_15 INPUT,PULL UP, PULL DOWN Row/Scan line
19 SCANR_16 INPUT,PULL UP, PULL DOWN Row/Scan line
20 SCANR_17 INPUT,PULL UP, PULL DOWN Row/Scan line
21 SCANR_18 INPUT,PULL UP, PULL DOWN Row/Scan line
22
NC
23
NC
24
NC
25
NC
26
NC
27 SCANC_1 INPUT,PULL UP Column line
28 SCANC_2 INPUT,PULL UP Column line
29 SCANC_3 INPUT,PULL UP Column line
30 SCANC_4 INPUT/OUTPUT Column line
31 SCANC_5 INPUT/OUTPUT Column line
32 SCANC_6 INPUT/PULL UP Column line
33 SCANC_7 INPUT/PULL UP Column line
34 SCANC_8 INPUT/PULL UP Column line
35 ACPI_KEY INPUT/PULL UP Sleep, Shutdown, Wakeup
36 Fn_KEY INPUT/PULL UP Select alternative keyboard
37
E2PCLK/ROM_SEL2 INPUT/OUTPUT PULL UP EEPROM clock / Or select 2
for internal mask ROM
38
E2PDATA/ROM_SEL1 INPUT/OUTPUT PULL UP EEPROM data / Or
select 1 for internal mask ROM
39
SCROLL_LOCK OUTPUT Scroll_lock LED output-low
active-open drain
40
CAP_LOCK OUTPUT Cap lock LED – low active –
open drain
41
NUM_LOCK OUTPUT Num lock LED – low active –
open drain
42
LED1 OUTPUT Additional LED 1 – low
active –open drain