American Megatrends MegaRAID Express 500 - Manual (Page 71)

Chapter 6 Hardware Installation 57
Step 5 Set Jumpers, Continued
J1 Termination Enable J1 is a three-pin header that specifies hardware or software control of
SCSI termination.
Type of SCSI Termination J10 Setting
Software control of SCSI termination via drive detection. Short Pins 1-2
Permanently disable all onboard SCSI termination. Short Pins 2-3
Permanently enable all onboard SCSI termination. OPEN
J9 I2C Interface Connector J9 is a four-pin header that allows the i960JX core processor to serve
as a master and slave device that resided on the I2C bus when used with the I2C
Bus Interface Unit. Attach a four-wire cable from J9 to the I2C Bus Interface
Unit.
Pin Description
1 GND
2 SDA
3 VCC
4 SCL
J5 Serial Port J5 is a 9-pin berg that attaches to a serial cable. The pinout is:
Pin Signal Description Pin Signal Description
1 Carrier Detect 2 Data Set Ready
3 Receive Data 4 Request to Send
5 Transmit Data 6 Clear to Send
7 Data Terminal Ready 8 Ring Indicator
9 Ground
Cont’d