19
Installing the Motherboard
LPT: Onboard parallel port header
This is a header that can be used to connect to the printer, scanner or other devices.
1
STROBE
14
ALF
2
PD0
15
ERROR
3
PD1
16
INIT
4
PD2
17
SLCTIN
5
PD3
18
Ground
6
PD4
19
Ground
7
PD5
20
Ground
Pin Signal Name Pin Signal Name
8
PD6
21
Ground
9
PD7
22
Ground
10
ACK
23
Ground
11
BUSK
24
Ground
12
PE
25
Ground
13
SLCT
26 Key
SPDIFO: SPDIF out header
This is an optional header that provides an S/PDIF (Sony/Philips Digital Interface)
output to digital multimedia device through optical fiber or coaxial connector.
SPI_ROM: SPI ROM header
This 8 Mb ROM contains the programmable BIOS program.
Pin
Signal Name
Function
1
SPDIF
SPDIF digital output
2
+5VA
5V analog Power
3
Key
No pin
4
GND
Ground
1
CHIP SELECT
Select chip
2
VCC
VCC
3
DATA OUTPUT data output
4
HOLD
hold
5
WRITE PROTECT BIOS write protect
6
CLOCK
clock
7
CND
CND
8
DATA INPUT
data input
Pin
Signal Name
Function