20-101-1247 Rabbit Semiconductor, 20-101-1247 Datasheet - Page 42
![CORE MODULE RCM5450W](/photos/6/74/67495/20-101-1247_sml.jpg)
20-101-1247
Manufacturer Part Number
20-101-1247
Description
CORE MODULE RCM5450W
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-101-1246.pdf
(120 pages)
Specifications of 20-101-1247
Module/board Type
MPU Core Module
Wireless Frequency
73.73 MHz
For Use With/related Products
RCM5450W
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
316-1149
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4.2 Serial Communication
The RCM5400W module does not have any serial driver or receiver chips directly on the
board. However, a serial interface may be incorporated on the board the RCM5400W is
mounted on. For example, the Prototyping Board has an RS-232 transceiver chip.
4.2.1 Serial Ports
There are six serial ports designated as Serial Ports A, B, C, D, E, and F. All six serial
ports can operate in an asynchronous mode up to the baud rate of the system clock divided
by 8. An asynchronous port can handle 7 or 8 data bits. A 9th bit address scheme, where
an additional bit is sent to mark the first byte of a message, is also supported.
Serial Port A is normally used as a programming port, but may be used either as an asyn-
chronous or as a clocked serial port once application development has been completed and
the RCM5400W is operating in the Run Mode.
Serial Port B is shared with the serial flash, and is set up as a clocked serial port. PB0
provides the SCLKB output to the serial flash.
Serial Ports C and D can also be operated in the clocked serial mode. In this mode, a clock
line synchronously clocks the data in or out. Either of the two communicating devices can
supply the clock. Remember to select the SCLKC and SCLKD outputs from the choices in
Table 3 when you set up Serial Ports C and D as clocked serial ports.
Serial Ports E and F can also be configured as SDLC/HDLC serial ports. The IrDA proto-
col is also supported in SDLC format by these two ports. Serial Ports E and F must be con-
figured before they can be used. The sample program
in the
IOCONFIG_SWITCHECHO.C
Dynamic C
folder shows how to configure Serial Ports E
SAMPLES\RCM5400W\SERIAL
and F.
36
RabbitCore RCM5400W
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