Communication Interfaces; Rs232-1; Rs232-2 - Motorola G24 Developer's Manual

Configuration

Communication Interfaces

The G24 Developer Board includes four serial interfaces
•
Primary RS232-1
•
Secondary RS232-2
•
USB
•
Data logger
Figure 2-10: USB, RS232-1, RS232-2 and Data Logger Connectors
Each of these serial interfaces is described in the sections that follow.

RS232-1

The 9-pin, D-type RS232-1 serial port (J300) is the primary interface to the G24. The G24 UART
signals are active-low CMOS-level signals (0-2.7 V), which are converted by the Developer
Board to standard RS232 levels for PC communications. The RS232-1 Connector Pinout (J300)
is shown in
Note:
16
USB
Connector
Table 2-4.
The RS232-1 connector pin names are DTE-oriented.
Table 2-4: RS232-1 Connector Pinout (J300)
Pin #
1 DCD
2 RXD
3 TXD
4 DTR
5 Ground
6 DSR
7 RTS
8 CTS
9 RI
Developer's Kit
(Figure
RS232-1

RS232-2

Connector Connector
Description DTE I/O
In
In
Out
Out
In
Out
In
In
2-10):
Data Logger
Connector
April 1, 2006