9. Appendix C. GPIO registers

9.1. GPIO Input Enable Registers

Address 0xd8110070

GPIO[23:20] Enable Register
BIT	Attribute	Default	Description
7:0	RW	FFh	GPIO[23:20] Enable Register

Address 0xd8110071

GPIO[27:24] Enable Register
BIT	Attribute	Default	Description
7:0	RW	0Fh	GPIO[27:24] Enable Register

9.2. GPIO Input Data Registers

Address 0xd8110030 – 0xd8110031

GPIO[27:20] Input Data Register
BIT	Attribute	Default	Description
15:12	RO	4’h0	Reserved
11	RO		GPIO27 Signal GPIO Input Data
10	RO		GPIO26 Signal GPIO Input Data
9	RO		GPIO25 Signal GPIO Input Data
8	RO		GPIO24 Signal GPIO Input Data
7	RO		GPIO23 Signal GPIO Input Data
6	RO		GPIO22 Signal GPIO Input Data
5	RO		GPIO21 Signal GPIO Input Data
4	RO		GPIO20 Signal GPIO Input Data
3:0	RO		Reserved

9.3. GPIO Output Enable Registers

Address 0xd81100B0

GPIO[23:20] Output Enable Register
BIT	Attribute	Default	Description
7:0	RW	00h	GPIO[23:20] Output Enable Register

Address 0xd81100B1

GPIO[27:24] Output Enable Register
BIT	Attribute	Default	Description
7:0	RW	00h	GPIO[27:24] Output Enable Register

9.4. GPIO Output Data Registers

Address 0xd81100F0

GPIO[23:20] Output Data Register
BIT	Attribute	Default	Description
7:0	RW	00h	GPIO[23:20] Output Data Register

Address 0xd81100F1

GPIO[27:24] Output Data Register
BIT	Attribute	Default	Description
7:0	RW	00h	GPIO[27:24] Output Data Register

9.5. GPIO Pull-up/Pull-down Enable Registers

Address 0xd81104B0

GPIO[23:20] Pull-up/Pull-down Enable Register
BIT	Attribute	Default	Description
7:0	RW	00h	GPIO[23:20] Pull-up/Pull-down Enable Register

Address 0xd81104B1

GPIO[27:24] Pull-up/Pull-down Enable Register
BIT	Attribute	Default	Description
7:0	RW	0Fh	GPIO[27:24] Pull-up/Pull-down Enable Register

9.6. GPIO Pull-up/Pull-down Control Registers

Address 0xd81104F0

GPIO[23:20] Pull-up/Pull-down Control Register
BIT	Attribute	Default	Description
7:0	RW	00h	GPIO[23:20] Pull-up/Pull-down Control Register

Address 0xd81104F1

GPIO[27:24] Pull-up/Pull-down Control Register
BIT	Attribute	Default	Description
7:0	RW	00h	GPIO[27:24] Pull-up/Pull-down Control Register

9.7. GPIO Interrupt Request Status Registers

Address 0xd8110362

GPIO Interrupt Request Status Register (GPIO[23:20])
BIT	Attribute	Default	Description
7	RW1C	0	GPIO23 Interrupt Status When this bit is inactive (a zero), it indicates that no interrupt has been configured and detected on the associated signal. When this bit is active (an one), it indicates that an interrupt request has been configured and detected on the associated signal. Once this bit is active (an one), software must write an one to this bit to clear it inactive (a zero), otherwise this bit and the associated GPIO Interrupt Request will remain active (a one).
6	RW1C	0	GPIO22 Interrupt Status
5	RW1C	0	GPIO21 Interrupt Status
4	RW1C	0	GPIO20 Interrupt Status

Address 0xd8110363

GPIO Interrupt Request Status Register (GPIO[27:24])
BIT	Attribute	Default	Description
3	RW1C	0	GPIO27 Interrupt Status
2	RW1C	0	GPIO26 Interrupt Status
1	RW1C	0	GPIO25 Interrupt Status
0	RW1C	0	GPIO24 Interrupt Status