CoreSight SoC Technical Reference Manual: 3.16.1. JTAG-AP register summary

Table 3.211 shows the JTAG-AP register summary.

Table 3.211. JTAG-AP register summary

Offset	Type	Reset value	Name
`0x00`	RW	`0x00000000`	JTAG-AP Control/Status Word Register, CSW, 0x00, CSW.
`0x04`	RW	`0x00`	JTAG-AP Port Select Register, PORTSEL, 0x04, PORTSEL.
`0x08`	RW	`0x00`	JTAG-AP Port Status Register, PSTA, 0x08, PSTA.
`0x0C`	-	-	Reserved.
`0x10`	RW	undefined	JTAG-AP Byte FIFO registers, BFIFOn, 0x10-0x1C.
`0x14`	RW	undefined
`0x18`	RW	undefined
`0x1C`	RW	undefined
`0x20`-`0xF8`	-	-	Reserved, SBZ.
`0xFC`	RO	`0x14760010`	JTAG-AP Identification Register, IDR. Required by all access ports.

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