GPIO
The CT Board offers on the 4 general purpose ports the following functions:
- 4 general purpose I/O ports
- 32 memory mapped output pins
 - 32 memory mapped input pins
 
 - 2 general purpose I/O ports, directly connected to MCUs Port A and B
 - External interface to SRAM bus.
 
Functions
These modes are available:
- GPIO over CPLD for input / output on ports P1..4.
 - GPIO over MCU for input / output on ports P5 / P6.