Nuvo-6000 Series User’s Manual
Copyright © 2016 Neousys Technology Inc. All Right Reserved.
Page 16 of 100
2.2.8 COM Ports (COM1/COM2)
Nuvo-6000 provides totally five COM ports for communicating
with external devices. These COM ports are implemented
using industrial-grade ITE8786 Super IO chip (-40 to 85°C)
and provide up to 115200 bps baud rate.
COM1 and COM2 are software-selectable RS-232/422/485
ports. The operation mode of COM1 and COM2 can be set in
BIOS setup utility (refer to section 4.1.1 for detail). The
following table describes the pin definition of COM ports.
COM1 & COM2
Pin#
RS-232 Mode
RS-422 Mode
RS-485 Mode
(Two-wire 485)
1
DCD
2
RX
422 TXD+
485 TXD+/RXD+
3
TX
422 RXD+
4
DTR
422 RXD-
5
GND
GND
GND
6
DSR
7
RTS
8
CTS
422 TXD-
485 TXD-/RXD-
9
RI