AHB2APB_ Bridge design

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1. Function description

Study here AHB Slave To APB master The bridge of , Implement interface conversion , Such as below

2. Parameters to describe

Group	Signal	Direction	Width(bits)	Description
AHB slave interface	hrstn	input	1	Reset signal
	hclk	input	1	The clock
	haddr	input	HADDR_WIDTH	Address used to access the internal register
	hburst	input	3	burst Transmission format
	hsize	input	3	Data transfer significand
	htrans	input	2	Transmission status
	hwrite	input	1	1 Said to write ,0 Express reading
	hsel	input	1	Strobe
	hwdata	input	HDATA_WIDTH	Writing data
	hrdata	output	HDATA_WIDTH	Read out data
	hreadyout	output	1	Prepare the sign
	hresp	output	1	Feedback whether there is an error in the current transmission
APB master interface	paddr	output	HADDR_WIDTH	Address
	pselx	output	1	The subscript is x Of APB Slave Chip selection
	penable	output	1	Used to distinguish ACCESS PHASE And SETUP PHASE
	pwrite	output	1	Read write instruction
	pwdata	output	PDATA_WIDTH	Writing data
	prdata	input	PDATA_WIDTH	Reading data
	pready	input	1	Prepare the signal
	pslverr	input	1	Transmission error flag

Then the parameter description

Parameter	Units	Description
HADDR_WIDTH	bit	AHB Address bit width of the interface
HDATA_WIDTH	bit	AHB Data bit width of the interface
PADDR_WIDTH	bit	APB Address bit width of the interface
PDATA_WIDTH	bit	APB Data bit width of the interface
ACCESS_ADDR1、ACCESS_ADDR2、ACCESS_ADDR3、ACCESS_ADDR4	bit	Accessible address

3. logic design