User Manual
Page 25
X4 Signal Descriptions
Pin Signal Description Type PU/PD Comment
1 GND Ground PWR - -
2 GND Ground PWR - -
3 5V_SB Supply of internal suspend Circuit PWR - -
4 PWGIN Power Good / Reset Input I-3,3 - -
5 PS_ON Power Supply On O-5 PU 4k7 5VSB -
6 SPEAKER Speaker Output O-5 - -
7 PWRBTN# Power Button I-5 PU 10k 3,3BMC -
8 BATT Battery Supply PWR - -
9 KBINH Keyboard Inhibit Control Input NC - -
10 LILED Ethernet Link LED O-3,3 - -
11 RSMRST# Resume Reset input I-3,3 PU 10k 3,3VSB -
12 ACTLED Ethernet Activity LED O-3,3 - -
13 ROMKBCS# - NC - -
14 SPDLED Ethernet Speed LED O-3,3 - -
15 EXT_PRG - NC - -
16 I2CLK I2C Bus Clock O-5 PU 2.2k 5V
17 5VCC Power +5V PWR - -
18 5VCC Power +5V PWR - -
19 OVCR# Over Current Detect for USB I-3,3 PU 10k 3,3VSB -
20 GPCS# - NC - -
21 EXTSMI# System Management Interrupt Input I-3,3 PU 10k 3,3V To be verified
22 I2DAT I2C Bus Data IO-5 PU 2.2k 5V -
23 SMBCLK SM Bus Clock O-3,3 PU 2k2 3,3VSB -
24 SMBDATA SM Bus Data IO-3,3 PU 2k2 3,3VSB -
25 S_CS3# Secondary IDE Chip Select Channel 1 O-3,3 - -
26 SMBALERT SM Bus Alert I-3,3 PU 10k 3,3VSB -
27 S_CS1# Secondary IDE Chip Select Channel 0 O-3,3 - -
28 DASP_S - I-3,3 - -
29 S_A2 Secondary IDE Address Bus O-3,3 - -
30 P_CS3# Primary IDE Chip Select Channel 1 O-3,3 - -
31 S_A0 Secondary IDE Address Bus O-3,3 - -
32 P_CS1# Primary IDE Chip Select Channel 0 O-3,3 - -
33 GND Ground PWR - -
34 GND Ground PWR - -
35 PDIAG_S 80-conductor IDE cable Channel 1 I-3,3 - -
36 P_A2 Primary IDE Address Bus O-3,3 - -
37 S_A1 Secondary IDE Address Bus O-3,3 - -
38 P_A0 Primary IDE Address Bus O-3,3 - -
39 S_INTRQ Secondary IDE Interrupt Request I-3,3 PD 10k -
40 P_A1 Primary IDE Address Bus O-3,3 - -
41 BATLOW# Battery Low I-3,3 -
42 GPE1# - NC - -
43 S_AK# Secondary IDE DMA Acknowledge O-3,3 - -
44 P_INTRQ Primary IDE Interrupt Request I-3,3 PD 10k -
45 S_RDY Secondary IDE Ready I-3,3 PU 5k6 3,3V -
46 P_AK# Primary IDE DMA Acknowledge O-3,3 - -
47 S_IOR# Secondary IDE IO Read O-3,3 - -
48 P_RDY Primary IDE Ready I-3,3 PU 5k6 3,3V -
49 5VCC Power +5V PWR - -
50 5VCC Power +5V PWR - -