RadiSys PROCELERANT SB5520DT1-SATA - Overheat Led;Fan Fail (JOH1); SATA-SGPIO 0;1 Headers; System Management Bus

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Hardware Reference
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Overheat LED/fan fail (JOH1)
The JOH1 header is used to connect an LED indicator to provide warnings of chassis
overheating or fan failure. This LED will blink when a fan failure occurs.
SATA-SGPIO 0/1 headers
Two SATA-SGPIO (General Purpose Input/Output) headers (SATA-SGPIO-0/SATA-SGPIO-1) are
located on the motherboard. These headers support serial link interfaces for the onboard SATA
connectors.
System management bus
A System Management Bus (SMB) header is located at JSMB1 on the motherboard. Connect
an appropriate cable here to use the SMB connection on your system.
Table 25. Overheat LED pin definitions
Pin # Definition
1+3.3V
2OH active
Table 26. OH/fan fail LED indications
State Message
Solid Overheat
Blinking Fan fail
Table 27. SATA-SGPIO pin definitions
Pin # Definition Pin # Definition
1 No connections 5 Load
2 No connections 6 Ground
3 Ground 7 Clock
4 Data 8 No connections
Table 28. SMB header pin definitions
Pin # Definition
1Data
2 Ground
3Clock
4 No connection
1
2
1
7
2
8