CM312 Datasheet, PDF (15/56 Pages) List of Unclassifed Manufacturers – Communications utilityModule

Default Settings
The utilityModule is delivered from the factory configured according to the following table.
Table 1 Default Jumper Settings
Jumper
JP1
G jumper
JP2
G jumper
JP3
G jumper
JP4
G jumper
JP5
CLK jumper
JP6
EEPROM
JP7
JP8
First
COM port
JP9
Second
COM port
JP10
Third
COM port
JP11
Fourth
COM port
SW1
Setting
3-4
Installed
1-2
Installed
5-6
Installed
13-14
Installed
2-3 installed
1-2 open
1-2 open
1-2 not
installed
3-4 installed
5-6 open
7-8 open
1-2 not
installed
3-4 installed
5-6 open
7-8 open
1-2 not
installed
3-4 installed
5-6 open
7-8 open
1-2 not
installed
3-4 installed
5-6 open
7-8 open
All down
Function
IRQ4 for 1^st COM port
1K pull down resister on IRQ4 line
IRQ3 for 2^nd COM port
1K pull down resister on IRQ3 line
IRQ5 for 3^rd COM port
1K pull down resister on IRQ5 line
IRQ10 for 4^th COM port
1K pull down resister on IRQ10 line
24 MHz / 13 input clock is selected for serial ports
Enable Ethernet EEPROM
Not used, leave open
Enable port
Select RS-232 mode
No termination on RxD (Not required for RS-232 mode)
No termination on CTS (Not required for RS-232 mode)
Enable port
Select RS-232 mode
No termination on RxD (Not required for RS-232 mode)
No termination on CTS (Not required for RS-232 mode)
Enable port
Select RS-232 mode
No termination on RxD (Not required for RS-232 mode)
No termination on CTS (Not required for RS-232 mode)
Enable port
Select RS-232 mode
No termination on RxD (Not required for RS-232 mode)
No termination on CTS (Not required for RS-232 mode)
I/O base addresses at
3E8, 2E8, 280, 288 for 1^st, 2^nd,3^rd and 4^th COM port respectively
CM312 Quad Serial utilityModule
5
RTD Embedded Technologies, Inc.