101-1226 Rabbit Semiconductor, 101-1226 Datasheet - Page 36
101-1226
Manufacturer Part Number
101-1226
Description
RCM3900 DEV KIT UNIVERSAL
Manufacturer
Rabbit Semiconductor
Series
RabbitCore 3900r
Type
MPU Moduler
Datasheet
1.20-101-1196.pdf
(168 pages)
Specifications of 101-1226
Contents
RabbitCore Module, Dev. Board, AC Adapter, Cable and Dynamic C® CD-Rom
For Use With/related Products
RCM3900
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
316-1137
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4.3 Serial Programming Cable
The programming cable is used to connect the serial programming port of the RCM3900
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 3000.
When the
PROG
connector on the programming cable is connected to the RCM3900
serial programming port at header J1, programs can be downloaded and debugged over the
serial interface.
The
connector of the programming cable may be used on header J1 of the RCM3900
DIAG
with the RCM3900 operating in the Run Mode. This allows the programming port to be
used as a regular serial port.
4.3.1 Changing Between Program Mode and Run Mode
The RCM3900 is automatically in Program Mode when the
connector on the pro-
PROG
gramming cable is attached, and is automatically in Run Mode when no programming
cable is attached. When the Rabbit 3000 is reset, the operating mode is determined by the
state of the SMODE pins. When the programming cable’s
PROG
connector is attached,
the SMODE pins are pulled high, placing the Rabbit 3000 in the Program Mode. When the
programming cable’s
connector is not attached, the SMODE pins are pulled low,
PROG
causing the Rabbit 3000 to operate in the Run Mode.
Figure 9. Switching Between Program Mode and Run Mode
RabbitCore RCM3900 User’s Manual
36
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