User`s manual

36 MiniCore RCM5600W
4.4 Programming Modes
The USB cable is used to connect the programming port of the RCM5600W to a PC USB
port via the Interface Board.
Whenever the RCM5600W is reset, the operating mode is determined by the state of the
SMODE pins. The RCM5600W is automatically in Program Mode when the SMODE
pins, which are tied together, are pulled up to +3.3 V. This happens when the RCM5600W
is installed on the Interface Board, and pins 1–2 on header JP1 on the Interface Board are
jumpered. When the SMODE pins are pulled low by removing the jumpers from pins 1–2
on header JP1 on the Interface Board, the Rabbit 5000 will operate in the Run Mode once
the RCM5600W is reset. The USB cable may be used for a serial connection to the pro-
gramming port when the RCM5600W is operating in the Run Mode.
Figure 11. Switching Between Program Mode and Run Mode
A program “runs” in either mode, but can only be downloaded and debugged when the
RCM5600W is in the Program Mode.
Refer to the
Rabbit 5000 Microprocessor User’s Manual for more information on the pro-
gramming port.
JP1
4
3
2
1
6
5
7
8
RESET
RESET RCM5600W when changing mode:
Short out /RESET_IN to GND,
OR
Press RESET button (if using Interface Board), OR
Cycle power off/on
after removing or attaching jumper on pins 12.