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©Vecow EMBC-2000 User Manual
GETTING TO KNOW YOUR EMBC-2000
2.2.8 CN6 To CN9 : COM 1 To COM 4 Serial Port
The serial port 1 to 4 can be configured for RS-232, RS-422, or RS-485 with auto
flow control communication. The default definition of COM 1 to COM 4 is RS-232.
If you want to change to RS-422 or RS-485, you can find the setting in BIOS.
BIOS Setting
Function
COM 1 (CN6) (Isolated)
COM 2 (CN7) (Isolated)
COM 3 (CN8)
COM 4 (CN9)
RS-232
RS-422 (5-wire)
RS-422 (9-wire)
RS-485
RS-485 w/z auto-flow control
CN8
CN9
CN6
CN7
Mechanical Key
Pin No.
Signal Name
Pin No.
Signal Name
15
GND
16
UIM_VPP
13
14
UIM_RESET
11
REFCLK-
12
UIM_CLK
9
GND
10
UIM_DATA
7
CLKREQ#
8
UIM_PWR
5
Reserved
6
1.5V
3
Reserved
4
GND
1
WAKE#
2
3.3Vaux
