Realtek Ameba-D RTL872 D Series User Manual page 76

Bit Name
31:GPIO_PWIDTH_D Reserved
GPIO_PWIDTH_D–1:0 Port D Data Register
8.3.3.11 gpio_swportd_ddr

Name: Port D Data Direction

Size: GPIO_PWIDTH_D

Address offset: 0x28

Read/write access: read/write
Bit
31:GPIO_PWIDTH_D
GPIO_PWIDTH_D–1:0
8.3.3.12 gpio_swportd_ctl

Name: Port D Data Source

Size:

1 bit wide if GPIO_PORTD_SINGLE_CTL = 1

GPIO_PWIDTH_D bits wide if GPIO_PORTD_SINGLE_CTL = 0

Address offset: 0x2C

Read/write access: read/write
Bit Name
User Manual
Access
Read as zero
R/W
Name
Reserved
Port D Data Direction
Access Description
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Description
Reserved
Values written to this register are output on the I/O signals for Port
D if the corresponding data direction bits for Port D are set to
Output mode and the corresponding control bit for Port D is set to
Software mode. The value read back is equal to the last value
written to this register.
Reset Value: GPIO_SWPORTD_RESET
Access Description
Read as zero Reserved
R/W Values written to this register independently control the
direction of the corresponding data bit in Port D. The
default direction can be configured as input or output
after system reset through the GPIO_DFLT_DIR_D
parameter.
0 – Input (default)
1 – Output
Reset Value: GPIO_DFLT_DIR_D
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Ameba-D User Manual
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