APB3 Slave Interface

The following table shows the ports for the APB3 user slave peripheral. Refer to the AMBA APB Protocol Specification for APB port descriptions and handshake information.

Table 1. APB3 PortsWhere n is 0, 1, 2, 3, or 4

Port	Direction	Description
io_apbSlave_n_PADDR[m:0]	Output	APB3 slave address, where m is configurable up to 20 bits wide.
io_apbSlave_n_PSEL	Output	APB3 slave select.
io_apbSlave_n_PENABLE	Output	APB3 slave enable.
io_apbSlave_n_PREADY	Input	APB3 slave ready.
io_apbSlave_n_PWRITE	Output	APB3 slave direction.
io_apbSlave_n_PWDATA[31:0]	Output	APB3 slave write data.
io_apbSlave_n_PRDATA[31:0]	Input	APB3 slave read data.
io_apbSlave_n_PSLVERROR	Input	APB3 slave transfer failure.