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SC113 Chassis Manual
B-6 Front Connector and Pin Definitions
#1. Backplane Main Power Connectors
The 4-pin connectors, designated JP10 provide
power to the backplane. See the table on the
right for pin definitions.
#2 Upgrade Connector
The Upgrade connector, designated JP46,
serves a diagnostic purpose. This connector
should be used by a certified and experienced
technician.
#3. MG9072 Chip
The MG9072 is an enclosure management
chip that supports the SES-2 controller and
SES-2 protocols.
#4 and #5. 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.
Pin#
Pin # Definition
2
SDIN/
Backplane
Addressing
(SB5)
4
SDOUT/I
Reset
(SB4)
6
GND (SB3)
8
Backplane
ID (SB7)
10
No Connec-
tion
B-4
Backplane
Main Power
4-Pin Connector
(JP10)
Definition
1
+12V
2 and 3
Ground
4
+5V
Sideband Headers
(JP51 and JP52)
Pin # Definition
1
Controller
ID (SB6)
C
3
GND (SB2)
2
5
SLOAD/
SDA (SB1)
7
SCLOCK/
SCL (SB0)
9
No Connec-
tion
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