Realtek Ameba-D RTL872 D Series User Manual page 81

GPIO_PWIDTH_A–1:0 External Port A
8.3.3.22 gpio_ext_portb

Name: External Port B

Size: GPIO_PWIDTH_B

Address offset: 0x54

Read/write access: read
Bit Name
31:GPIO_PWIDTH_B Reserved
GPIO_PWIDTH_B–1:0 External Port B
8.3.3.23 gpio_ext_portc

Name: External Port C

Size: GPIO_PWIDTH_C

Address offset: 0x58

Read/write access: read
Bit Name
31:GPIO_PWIDTH_C Reserved
GPIO_PWIDTH_C–1:0 External Port C
8.3.3.24 gpio_ext_portd

Name: External Port D

Size: GPIO_PWIDTH_D

Address offset: 0x5C

Read/write access: read
Bit Name
31:GPIO_PWIDTH_D Reserved
User Manual
R When Port A is configured as Input, then reading this location reads
the values on the signal. When the data direction of Port A is set as
Output, reading this location reads the data register for Port A.
Reset Value: 0x0
Access Description
Read as zero Reserved
R When Port B is configured as Input, then reading this location reads
the values on the signal. When the data direction of Port B is set as
Output, reading this location reads the data register for Port B.
Reset Value: 0x0
Access Description
Read as zero Reserved
R When Port C is configured as Input, then reading this location reads
the values on the signal. When the data direction of Port C is set as
Output, reading this location reads the data register for Port C.
Reset Value: 0x0
Access Description
Read as zero Reserved
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General Purpose Input/Output (GPIO)
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