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B.5 Pin Assignments

The following table shows the Serial Adapter external connector pin

assignments.

+------------------------------------------------------------------------+

¦ Pin ¦ ¦ ¦ ¦

¦ No. ¦ ¦ ¦ ¦

¦ ¦ Signal Name¦ Directio¦ Description ¦

¦ ¦ ¦ ¦ ¦

+-----+------------+---------+-------------------------------------------¦

¦ 3 ¦ TX DATA ¦ Out ¦ Transmit Data ¦

+-----+------------+---------+-------------------------------------------¦

¦ 2 ¦ RX DATA ¦ In ¦ Receive Data ¦

+-----+------------+---------+-------------------------------------------¦

¦ 7 ¦ RTS ¦ Out ¦ Request to Send ¦

+-----+------------+---------+-------------------------------------------¦

¦ 8 ¦ CTS ¦ In ¦ Clear to Send ¦

+-----+------------+---------+-------------------------------------------¦

¦ 6 ¦ DSR ¦ In ¦ Data Set Ready ¦

+-----+------------+---------+-------------------------------------------¦

¦ 5 ¦ GND ¦ ¦ Signal Ground ¦

+-----+------------+---------+-------------------------------------------¦

¦ 1 ¦ DCD ¦ In ¦ Data Carrier Detect ¦

+-----+------------+---------+-------------------------------------------¦

¦ 4 ¦ DTR ¦ Out ¦ Data Terminal Ready ¦

+-----+------------+---------+-------------------------------------------¦

¦ 9 ¦ RI ¦ In ¦ Ring Indicator ¦

+------------------------------------------------------------------------+

PS/2 Model L40 SX Quick Reference

Pin Assignments

B.5 - 1

IBM 8543 User Manual

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