GPIO registers mapping

GPIO Controller acts like a slave AMBA AXI4 device that is directly mapped into physical memory. Default address location for our implementation is defined by 0x80000000. Memory size is 4 KB.

LED register (0x000).

Bits	Type	Reset	Field Name	Bits	Description
24	RW	24h'0	rsrv	24	Reserved
8	RW	8h'0	led	7:0	LEDs. Written value directly assigned on SoC output pins and can be used as test signals.

DIP register (0x004).

Bits	Type	Reset	Field Name	Bits	Description
28	RO	28h'0	rsrv	28	Reserved
4	RO	-	dip	3:0	DIPs. Input configuration pins value (Read-Only). Configuration pin meaning depends of the used FW.

Set of temporary registers (0x008).

Offset	Bits	Type	Reset	Name	Definition
0x008	32	RW	32h'0	reg32_2	Temporary register 2. FW specific register used for debugging purposes.
0x00C	32	RW	32h'0	reg32_3	Temporary register 3.
0x010	32	RW	32h'0	reg32_4	Temporary register 4.
0x014	32	RW	32h'0	reg32_5	Temporary register 5.
0x018	32	RW	32h'0	reg32_6	Temporary register 6.