C-7
Appendix C: Backplane Specifications
I
2
C and SGPIO Modes and Jumper Settings
This backplane can utilize I
2
C or SGPIO. SGPIO is the default mode and can be
used without making changes to your jumpers. The following information details
which jumpers must be configured to use I
2
C mode or restore your backplane to
SGPIO mode.
SGPIO Setting (Default)
Jumper
Jumper Setting
Note
JP33
1-2
Controller ID #1
JP34
1-2
Backplane ID #1 (use ID #0)
JP36
1-2
Controller ID #2
JP37
1-2
Backplane ID #2 (use ID #0)
JP38
Open
I
2
C Reset #2
JP40
Closed
SDOUT #1
JP41
Closed
SDOUT #2
JP42
1-2
SDIN #1
JP43
1-2
SDIN #2
JP50
Open
I
2
C Reset #1
I
2
C Setting
Jumper
Jumper Setting
Note
JP33
2-3
Controller ID #1
JP34
1-2
Backplane ID #1 (use ID #0)
JP36
2-3
Controller ID #2
JP37
2-3
Backplane ID #2 (use ID #1)
JP38
Closed
I
2
C Reset #2
JP40
Open
I
2
C Reset #1
JP41
Open
I
2
C Reset #2
JP42
2-3
Blackplane ID #1
JP43
2-3
Blackplane ID #2
JP50
Closed
I
2
C Reset #1