Table of Contents
Advertisement
Backplane User's Guide
2-2
Front Connector and Pin Definitions
1. CD-ROM/Floppy 4-Pin Connectors
The 4-pin connectors, designated JP105
and JP106, provide power to the CD-ROM
and floppy drives. See the table on the right
for pin definitions.
2. Upgrade Connector
The Upgrade connector, designated JP46, is
used for manufacturer's diagnostic purposes
only.
3 and 4. Sideband Headers
The sideband headers are designated JP51
and JP52. For SES-2 to work properly, you
must connect an 8-pin sideband cable. See
the table to the right for pin definitions.
5 and 6. I
C Connectors
2
The I
C Connectors, designated JP44 and
2
JP45, are used to monitor HDD activity and
status. See the table on the right for pin
definitions.
Pin#
2 and 3
Pin #
Definition
2
SGPIO:
SDIN
I
C:
2
Backplane
Addressing
(SB5)
4
SGPIO:
SDOUT
I
C: Reset
2
(SB4)
6
GND (SB3)
8
Backplane
ID (SB7)
10
No Connec-
tion
Pin#
1
2
3
4
2-2
CD-ROM/
FDD Power
4-Pin Connector
(JP17 and JP18)
Definition
1
+5V
Ground
4
+12V
Sideband Headers
(JP51 and JP52)
Pin #
Definition
1
Controller ID
(SB6)
3
GND (SB2)
5
SGPIO:
SLOAD
I
C:SDA (SB1)
2
7
SGPIO:
SCLOCK
I
C:SCL (SB0)
2
9
No Connection
I
C Connector
2
Pin Definitions
(JP44 and JP45)
Definition
Data
Ground
Clock
No Connection
Advertisement
Table of Contents
