Pin name (Processor pin) [RabbitCore 2000 pin]

Function (slave port disabled)

Function (slave port enabled)

PB0 (93) [J1-3]

Bidirectional clock line if serial port B is enabled in clocked mode. Otherwise it is a parallel input.

Same as at left

PB1 (94) [J1-4]

Bidirectional clock line if serial port A is enabled in clocked mode. Otherwise it is a parallel input.

Same as at left

PB2 (95) [J1-5]

Parallel input

Read strobe from master (negative active)

PB3 (96) [J1-6]

Parallel input

Write strobe from master (negative active)

PB4 (97) [J1-7]

Parallel input

Slave register address line (SA0)

PB5 (98) [J1-8]

Parallel input

Slave register address line (SA1)

PB6 (99) [J1-9]

Parallel output

Parallel output

PB7 (100) [J1-10]

Parallel output

Slave requests attention (negative active)