B-7
Appendix B: BPN-SAS-815TQ Backplane Specications
B-6
SC815 Chassis Manual
JP29
B-7 Front Jumper Locations and Pin Denitions
Explanation of Jumpers
To modify the operation of the backplane,
jumpers can be used to choose between
optional settings. Jumpers create shorts
between two pins to change the function
of the connector. Pin 1 is identied with
a square solder pad on the printed circuit
board. Note: On two pin jumpers, "Closed"
means the jumper is on and "Open" means
the jumper is off the pins.
Connector
Pins
Jumper
Setting
3 2 1
3 2 1
Jumper Settings
Jumper Jumper Settings Note
JP18
Open: Enabled
Closed: Disabled
Buzzer reset*
JP29
Open: Default
Closed: Reset
MG9071 chip reset
+5V
GNDGND+12V
2
I C
+5V +12V
+5V
+12V
#1
#2
#3
#0
ACT IN
JP33
JP34
JP50
JP40
JP42
*The buzzer sound indicates that a condition requiring immediate attention has
occurred.
The buzzer alarm is triggered by the following conditions:
1. Hard drive failure
2. Fan failure
3. System temperature over 45º Celsius.
Figure B-3. Front Connectors and Jumpers
I
2
C and SGPIO Modes and Jumper Settings
This backplane can utilize I
2
C or SGPIO. I
2
C is the default mode and can be used
without making changes to your jumpers. The following information details which
jumpers must be congured to use SGPIO mode or restore your backplane to I2C
mode.
I
2
C Setting (Default)
Jumper Jumper Setting Note
JP33 Pins 2-3 Controller ID
JP34 Pins 1-2:ID#0 Backplane ID
JP40 Open I
2
C Reset SD OUT
JP42 Pins 2-3 Backplane ID SDIN
JP50 Closed I
2
C Reset
SGPIO Setting
Jumper Jumper Setting Note
JP33 Pins 1-2 Controller ID
JP34 Pins 1-2:ID#0 Backplane ID
JP40 Closed I
2
C Reset SD OUT
JP42 Pins 1-2 Backplane ID SDIN
JP50 Open I
2
C Reset
+5V
GNDGND+12V
2
I C
+5V +12V
+5V
+12V
#1
#2
#3
#0
ACT IN
ACT0
ACT1
JTAG UPGRADE
JP29:9071 RST
JP18:BUZZER RESET
ACT2
ACT3
SIDEBAND
M9
M15
JP10
D3
JP18
J8
J7
J6
J5
JP29
JP44
R144
MH2
M46
J9
J10
JP26
JP47
JP46
JP42
JP33
JP34
JP40 JP51
REV 1.00
SAS815TQ
S
UPER
R
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