Digital I/O Features

• Dual 82C55A Parallel Peripheral Interfaces (PPI) logic implemented in FPGA cores.

• Each 82C55A has three 8-bit I/O ports for a total of 48 DIO lines, which connect to a 50-pin header for external connections.

• Port direction and operation is selected through software programmable control registers.

• All lines are buffered with transceivers.