5-18
AS1020C-3 User's Manual
Power Fail Connector
Connect a cable from your power
supply to JPWF to provide you with
warning of a power supply failure.
The warning signal is passed through
the PWR_LED pin to indicate a power
failure. See the table on the right for
pin defi nitions.
Power Fail Connector
Pin Defi nitions (JPWF)
Pin# Defi nition
1 P/S 1 Fail Signal
2 P/S 2 Fail Signal
3 P/S 3 Fail Signal
4 Reset (from MB)
Note: This feature is only available when using
redundant power supplies.
Compact Flash Power Connector
JWF1 is a power connector for a
Compact Flash or DOC (Disk-On-Chip)
device. Connect the appropriate cable
here to provide power to such a device
on your system. See the table on the
right for pin defi nitions.
Compact Flash Power
Connector
Pin Defi nitions (JWF1)
Pin# Defi nition
1+5V
2 Ground
3 Signal
JSLED1 Header
JSLED1 is used to provide LED indica-
tion of SAS drive activity for internal
SAS ports 0-3. Refer to the table on
the right for pin defi nitions. SAS ports
4-7 are external ports and do not have
board level support for activity LEDs.
I2C for SAS Connector
The JS4 connection is used to provide
I2C monitoring for the SAS backplane.
See the table on the right for pin defi -
nitions.
Note: NC indicates no connection.
JSLED1 Header Pin Defi nitions
(JSLED1)
Pin # Defi nition Pin # Defi nition
1 SAS Port0 Active 6 NC
2 SAS Port1 Active 7 NC
3 SAS Port2 Active 8 NC
4 SAS Port3 Active 9 NC
5 SAS Port0-3 Signal 10 No pin
I2C for SAS Connector
Pin Defi nitions (JS4)
Pin# Defi nition
1I
2C Data
2I
2C Clock
3 Ground