apb_master_mux

Files
file	apb_target_gpio.cdl
	Simple GPIO target for an APB bus.

Detailed Description

Modules

module apb_master_mux::apb_master_mux	(	clock	clk,
		input bit	reset_n,
		input t_apb_request	apb_request_0,
		output t_apb_response	apb_response_0,
		input t_apb_request	apb_request_1,
		output t_apb_response	apb_response_1,
		output t_apb_request	apb_request,
		input t_apb_response	apb_response
	)

APB multiplexer - or rather, arbiter and multiplexer

The module takes two APB requests in, and provides a single APB request out.

An APB request from each master is registered, and APB transactions are performed using simple round-robin arbitration.

Parameters

[in]	clk	System clock
[in]	reset_n	Active low reset
[in]	apb_request_0	APB request to master 0
[out]	apb_response_0	APB response to master 0
[in]	apb_request_1	APB request to master 1
[out]	apb_response_1	APB response to master 1
[out]	apb_request	APB request to targets
[in]	apb_response	APB response from targets