B-5
Appendix B: BPN-SAS-825TQ Backplane Specications
#8 and #9 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
Sideband Headers
2 SGPIO:
SDIN;
I
2
C:
Backplane
Addressing
1 Controller
ID (SB6)
4 SGPIO:
SDOUT;
I
2
C: Reset
3 GND (SB2)
6 GND (SB3) 5 SGPIO:
SLOAD;
I
2
C: SDA
8 Backplane
ID (SB7)
7 SGPIO:
SCLOCK;
1
2
C: SCL
10 No Connec-
tion
9 No Connec-
tion
#12 to #19 SAS Ports
The SAS ports are used to connect the SAS
drive cables. The eight ports are designated
#0 - #7. Each port is also compatible with
SATA drives.
#10 MG9072 Chip
The MG9072 is an enclosure management
chip that supports the SES-2 controller and
SES-2 protocols.
#11 Upgrade Header
The upgrade header is designated JP46 and is
used for manufacturing purposes only.
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