6.6.2
GPIO Software Data Register
If the data direction bits in the GPIO Data Direction register are set to “output” mode and
the control field is set to “Software” mode, then data written to the GPIO Software Data
register are output to the 820x general purpose I/O pins. The value read back is equal to
the last value written to this register.
Type:
Offset
Read/Write
x‘0854’
Reserved
GPIO_SW_DATA[15:0]
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Field Name
Description
Bits
Reset
Reserved
31:16
0
Reserved.
GPIO_SW_DATA
[15:0]
GPIO_SW GPIO Software Data.
_RESET
15:0
6.6.3
GPIO Data Direction Register
The GPIO Data Direction register is used to control the direction of the data bits in the GPIO
Software register. Each bit may be independently set as either input or output. The default
direction is input.
Type:
Offset
Read/Write
x‘0858’
Reserved
GPIO_DDR[15:0]
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Field Name
Description
Bits
Reset
Reserved
31:16
0
Reserved.
GPIO_DDR
[15:0]
GPIO Data Direction.
The direction for each bit can be set as:
15:0
0
0
1
Input
Output
820x – Data Sheet, DS-0157-D
Page180
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