CP307
Configuration
ID 34424, Rev. 3.0
Page 4 - 13
P R E L I M I N A R Y
4.5.5
I/O Configuration Register
The I/O Configuration Register holds a series of bits defining the onboard configuration.
* The default settings of bits 6 and 3 change during the BIOS boot. After bit 3 is set, it can only
be cleared by a board reset.
Table 4-10: I/O Configuration Register
REGISTER NAME
I/O CONFIGURATION REGISTER
SIZE
ADDRESS
0x287
8 bits
BIT POSITION
MSB
7
6
5
4
3
2
1
0
LS
B
CONTENT
Res.
POST
LED1
LED0
BBEI
SCOM1
SETH2
SETH1
DEFAULT
0
0*
0
0
0*
1
0
0
ACCESS
R/W
R/W
R/W
R/W
R
R/W
R/W
R/W
BIT
NAME
DESCRIPTION / FUNCTION
7
Res.
Reserved
6
POST
POST LEDs’ configuration:
0 Enabled
1 Disabled
5
LED1
LED1 configuration/enable:
0 Overtemperature LED
1 General Purpose LED
4
LED0
LED0 configuration/enable:
0 Watchdog LED
1 General Purpose LED
3
BBEI
BIOS Boot End Indication:
0 BIOS is booting
1 BIOS boot finished
2
SCOM1
COM1 routing selection:
0 Rear I/O
1 CP307-HDD module
1
SETH2
Ethernet 2 routing selection:
0 Front I/O
1 Rear I/O
0
SETH1
Gigabit Ethernet 1 routing selection:
0 Front I/O
1 Rear I/O
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