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106 PERC 3/SC Hardware Installation
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J9 I2C Interface Connector
J9 is a four-pin header that allows the i960RM 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. Table 8-3 shows the J9 connector pinout.
J5 Serial Port
J5 is a 3-pin connector that attaches to a serial cable. Table 8-4 displays the
pinout for J5.
Permanently disable all onboard SCSI termination. Short pins 2-3
Permanently enable all onboard SCSI termination. OPEN (default)
Table 8-3. J9 I2C Interface Connector
Pinout
Pin Description
1SDA
2GND
3SCL
4VCC
Table 8-4. J5 Serial Port Pinout
Pin Description
1RXD
2TXD
3GND
Table 8-2. J1 Termination Enable Settings
(continued)
Type of SCSI Termination J10 Setting