EMB-M4 User`s Manual
23
COM3, COM5 Serial Ports
COM3, COM5, a 10-pin header connector, is the onboard COM3,
COM5 serial port of the M4. The following table shows its pin
assignments.
Pin #
RS232 Mode
Signal Name
1
DCD, Data carrier detect
2
RXD, Receive data
3
TXD, Transmit data
4
DTR, Data terminal ready
5 GND,
ground
6
DSR, Data set ready
7
RTS, Request to send
8
CTS, Clear to send
9 Ring-IN
10
NC
COM4 Serial Ports
COM4, a 10-pin header connector, is the onboard COM4 serial port of
the M4. The following table shows its pin assignments.
Pin #
RS232 Mode
Signal Name
RS422/RS485 Mode
Signal Name
1
DCD, Data carrier detect
TX- (422/485)
2
RXD, Receive data
TX+ (422/485)
3
TXD, Transmit data
RX+ (422)
4
DTR, Data terminal ready
RX- (422)
5 GND,
ground
GND
6
DSR, Data set ready
N.C.
7
RTS, Request to send
N.C.
8
CTS, Clear to send
N.C.
9 Ring-IN
N.C.
10
N.C.
N.C.
Содержание EMB-M4
Страница 1: ...E EM MB B M M4 4 INDUSTRIAL MOTHERBOARD User s Manual Version 1 3 ...
Страница 10: ...2 EMB M4 User s Manual Chapter 1 Features Specifications Features 3 Specifications 4 ...
Страница 16: ...8 EMB M4 User s Manual This page is intentionally left blank ...
Страница 17: ...EMB M4 User s Manual 9 Chapter 2 Jumper setting Connectors Jumpers on the M4 10 Connectors on the M4 15 ...
Страница 19: ...EMB M4 User s Manual 11 Jumper Locations on the M4 ...
Страница 24: ...16 EMB M4 User s Manual Connector Locations on the M4 1 2 ...
Страница 84: ...76 EMB M4 User s Manual CHAPTER 4 Appendix I O Port Address Map 77 Interrupt Request Lines IRQ 78 POST Beep 79 ...