20-101-1247 Rabbit Semiconductor, 20-101-1247 Datasheet - Page 48

• Manufacturer Part Number: 20-101-1247
• Description: CORE MODULE RCM5450W
• Manufacturer: Rabbit Semiconductor

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

4.4 Programming Cable
The programming cable is used to connect the programming port (header J2) of the
RCM5400W to a PC USB COM port. The programming cable converts the voltage levels
used by the PC USB port to the CMOS voltage levels used by the Rabbit 5000.
When the
connector on the programming cable is connected to the RCM5400W
PROG
programming port, programs can be downloaded and debugged over the serial interface.
The
connector of the programming cable may be used on header J2 of the
DIAG
RCM5400W with the RCM5400W operating in the Run Mode. This allows the program-
ming port to be used as a regular serial port.
4.4.1 Changing Between Program Mode and Run Mode
The RCM5400W is automatically in Program Mode when the
connector on the
PROG
programming cable is attached, and is automatically in Run Mode when no programming
cable is attached. When the Rabbit 5000 is reset, the operating mode is determined by the
status of the SMODE pins. When the programming cable’s
connector is attached,
PROG
the SMODE pins are pulled high, placing the Rabbit 5000 in the Program Mode. When the
programming cable’s
PROG
connector is not attached, the SMODE pins are pulled low,
causing the Rabbit 5000 to operate in the Run Mode.
Figure 10. Switching Between Program Mode and Run Mode
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RabbitCore RCM5400W