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4. Connectors

This chapter specifies the details of the connectors on the EPC. These connectors

adhere to existing standards. Pins are labeled from the point of view of looking into

the front of the connector on the EPC.

Serial Ports

The COM1 serial port is a DB-9 DTE connector defined in the following table.

Pin Signal Pin Signal

1 DCD 6 DSR

2 RxD 7 RTS

3 TxD 8 CTS

4 DTR 9 Ring indicator

5 Ground

The COM2 serial port is a DTE RJ-45 phone jack connector defined in the following

table:

RJ-45 Signal DB25

1 Shield 1

2 CTS 4

3 TxD 3

4 DTR 8

5 RxD 2

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 54 55

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