101-1272 Rabbit Semiconductor, 101-1272 Datasheet - Page 43

• Manufacturer Part Number: 101-1272
• Description: KIT MESH NETWORK ADD-ON RCM4510W
• Manufacturer: Rabbit Semiconductor
• Type: Microprocessorr

Specifications of 101-1272

• Product: Modules
• Data Bus Width: 12 bit
• Processor Type: Rabbit 4000
• Sram: 512 KB
• Number Of I/os: 20
• Description/function: Computer Module
• Interface Type: Ethernet
• For Use With/related Products: RCM4510W
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 316-1158

4.3 Programming Cable
The programming cable is used to connect the programming port of the RCM4510W to a
PC serial COM port. The programming cable converts the RS-232 voltage levels used by
the PC serial port to the CMOS voltage levels used by the Rabbit 4000.
When the
connector on the programming cable is connected to the RCM4510W
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
RCM4510W with the RCM4510W operating in the Run Mode. This allows the program-
ming port to be used as a regular serial port.
4.3.1 Changing Between Program Mode and Run Mode
The RCM4510W 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 4000 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 4000 in the Program Mode. When the
programming cable’s
PROG
connector is not attached, the SMODE pins are pulled low,
causing the Rabbit 4000 to operate in the Run Mode.
Figure 9. Switching Between Program Mode and Run Mode
User’s Manual
37