DIGITAL-LOGIC MICROSPACE MSEP800, Technical User'S Manual

Page: 35 / 140

DIGITAL-LOGIC AG
MSEP800 Manual V1.0G
35
4.3.3 Serial Ports COM1-COM2
The serial channels are fully compatible with 16C550 UARTS. COM1 is the primary serial port, and is sup-
ported by the board's ROM-BIOS as the PC-DOS 'COM1' device. The secondary serial port is COM2; it is
supported as the 'COM2' device.
Standard: COM 1/2: SMC 37C672: 2 x 16C550 compatible serial interfaces
Serial Port Connectors COM1, COM2 on 9pin DSUB
DB9 Pin Signal Name Function in/out
1 DCD Data Carrier Detect in
2 RXD Receive Data in
3 TXD Transmit Data out
4 DTR Data TerminalReady out
5 GND Signal Ground
6 DSR Data Set Ready in
7 RTS Request To Send out
8 CTS Clear to Send in
9 RI Ring Indicator
The serial port signals are compatible with the RS232C specifications.
If a second UART is assembled, that means the COM3/4 are available, please refer to
chapter 12.2.5
4.3.4 Serial Ports COM3-COM4
ONLY AVAILABLE WITH OPTION 804012
The serial channels are fully compatible with 16C550 UARTS. COM3 is the primary serial port, and is sup-
ported by the board's ROM-BIOS as the PC-DOS 'COM3' device. The secondary serial port is COM4; it is
supported as the 'COM4' device.
Standard: COM 3/4: TI 2 x 16C550 compatible serial interfaces
Serial Port Connectors COM1, COM2 on 9pin DSUB
DB9 Pin Signal Name Function in/out
1 DCD Data Carrier Detect in
2 RXD Receive Data in
3 TXD Transmit Data out
4 DTR Data TerminalReady out
5 GND Signal Ground
6 DSR Data Set Ready in
7 RTS Request To Send out
8 CTS Clear to Send in
9 NC
The serial port signals are TTL levels A conveter is needed to provide the Interface standard.
If a second UART is assembled, that means the COM3/4 are available, please refer to
chapter 12.2.5