Sam4s ER-5100? SERIES, Service Manual, Page: 10 / 80

2 Product Specifications
SAM4S ER-5100 SERIES 2-3
2-3 Communication Interfaces
2-3-1 Serial Interfaces and Port Locations
Figure 2-1. RS-232C Interface Locations
2-3-2 Pin Descriptions for Serial Interfaces (Optional P.C.B.)
Figure 2-2. Pin Number Assignment
Table 2-1. Pin Descriptions and Signals of Serial Ports
Serial port #1 Serial port #2
Pin # Signal Pin # Signal Pin # Signal
1 N.C. 1 DTR 1 DTR
2 RxD 2 N.C. 2 N.C.
3 TxD 3 TxD 3 TxD
4 DTR 4 N.C. 4 N.C.
5 GND 5 RxD 5 Rxd
6 N.C. 6 GND 6 gnd
7 N.C.
8 DTR
9 N.C.