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20) BMC_LED1 (BMC Firmware Readiness LED)
21) SATA_SGPIO (SATA SGPIO Header)
SGPIO stands for Serial General Purpose Input/Output which is a 4-signal (or 4-wire) bus used between
a Host Bus Adapter (HBA) and a backplane. Out of the 4 signals, 3 are driven by the HBA and 1 is driven
by the backplane. Typically, the HBA is a storage controller located inside a server, desktop, rack or
workstation computer that interfaces with Hard disk drives (HDDs) to store and retrieve data.
This header provides the SATA interface of SGPIO funtion.
State
Description
On
BMC firmware is initial
Blinking BMC firmware is ready
Off
System is powered off
Pin No. Definition
1
2
1
2
3
4
7
8
5
6
7
8
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SGPIO_SATA_DATAIN
No Pin
SGPIO_SATA_DATAOUT
GND
GND
SGPIO_SATA_LOAD
NC
SGPIO_SATA_CLOCK
Hardware Installation
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