20-101-0673 Rabbit Semiconductor, 20-101-0673 Datasheet - Page 33

• Manufacturer Part Number: 20-101-0673
• Description: MODULE RABBITCORE RCM3610
• Manufacturer: Rabbit Semiconductor

Specifications of 20-101-0673

• Module/board Type: MPU Core Module
• Product: Microcontroller Modules
• Core Processor: Rabbit 3000
• Clock Speed: 22.1 MHz
• Interface Type: Serial
• Flash: 256 KB
• Timers: 10 x 8 bit, 1 x 10 bit
• Operating Supply Voltage: 3 V to 3.6 V
• Board Size: 31 mm x 54 mm x 16 mm
• Core: RCM3610
• Processor Series: RCM3600
• For Use With/related Products: RCM3610
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 316-1103

4.2 Serial Communication
The RCM3600 board does not have any serial transceivers directly on the board. How-
ever, a serial interface may be incorporated on the board the RCM3600 is mounted on. For
example, the Prototyping Board has RS-232, RS-485 and IrDA transceiver chips.
4.2.1 Serial Ports
There are five serial ports designated as Serial Ports A, C, D, E, and F. All five 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 RCM3600 is operating in the Run Mode.
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.
Serial Ports E and F can also be configured as HDLC serial ports. The IrDA protocol is
also supported in SDLC format by these two ports.
Serial Port F shares its pins with Serial Ports C and D on header J1, as shown in Figure 7.
The selection of port(s) depends on your need for two clocked serial ports (Serial Ports C
and D) vs. a second HDLC serial port (Serial Port F).
Figure 7. RCM3600 Serial Ports C, D, and F
The serial ports used are selected with the
function call, where X is the serial
serXOpen
port (C, D, or F). Remember that the RxC and RxD on Serial Ports C and D cannot be
used if Serial Port F is being used
User’s Manual
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