CCOMe-C30
CCOMe-C30 - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.B. - Reviewed by F.B. Copyright © 2019 SECO S.p.A.
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3.3.18
COM Ports Pin Header
Interfaced to the LPC Bus coming from the COM
CCOMe-C30 Carrier board there is a Dual LPC UART bridge, which allows
the implementation of two legacy COM Ports.
These two COM ports are made externally accessible through two
multistandard transceiver, which allows using them in RS-232, RS-422 or
RS-485 mode.
These ports are available on dedicated connector CN19, which
is an internal 9-pin standard male pin header, p 2.54 mm, 5+4
pin, h= 6mm, type NELTRON p/n 2213S-10G-E06 or equivalent.
Selection of working mode is made using jumpers JP3 and JP4, which are
standard pin headers, P2.54mm, 1x3 pin.
According to the working mode selected via jumpers JP3 and JP4, the
pinout of the connector (a dual row p.254mm 9-pin header) is as described
in the following table.
COM ports pin header - CN15
Pin Signal RS-232 mode
Signal RS-422 mode Signal RS-485 mode
1
COM1_RxD
2
COM2_RxD
3
COM1_TxD
COM1_Tx-
COM1_Rx-/COM1_Tx-
4
COM2_TxD
COM2_Tx-
COM2_Rx-/COM2_Tx-
5
GND
7
COM1_RTS#
/
8
COM2_RTS#
/
9
COM1_CTS#
COM1_Rx-
10
COM2_CTS#
COM2_Rx-
JP3 position
COM #1 Working Mode
1-2
RS-422
2-3
RS-232
Not Inserted
RS-485
JP4 position
COM #2 Working Mode
1-2
RS-422
2-3
RS-232
Not Inserted
RS-485
