C-4
SC842 Chassis Manual
#4 and #5. Sideband Connectors
The sideband connectors 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.
Sideband Connectors
Pin # Definition Pin # Definition
2
SDIN/
Backplane
Addressing
(SB5)
1
Controller
ID (SB6)
4
SDOUT/I
2
C
Reset
(SB4)
3
GND (SB2)
6
GND (SB3)
5
SLOAD/
SDA (SB1)
8
Backplane
ID (SB7)
7
SCLOCK/
SCL (SB0)
#3. MG9072 Chip
The MG9072 is an enclosure management
chip that supports the SES-2 controller and
SES-2 protocols.
C-6 Front Connector and Pin Definitions
#2 Upgrade Connector
The upgrade connector is designated JP46
and is for the manufacturer's diagnostic pur-
poses only.
Backplane
Main Power
4-Pin Connector
Pin# Definition
1
+12V
2 and 3
Ground
4
+5V
#1. Backplane Main Power Connectors
These 4-pin connectors designated JP10 and
JP13 provide power to the backplane. See the
table on the right for pin definitions.
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