Rainbow Electronics W90N745CDG User Manual
Page 332
W90N745CD/W90N745CDG
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GPIO Port4 Direction Register (GPIO_DIR4)
REGISTER ADDRESS
R/W
DESCRIPTION
RESET
VALUE
GPIO_DIR4 0xFFF8_3044
R/W
GPIO port4 in/out direction control
and pull-up enable register
0x0000_0000
31
30
29
28
27
26
25
24
RESERVED PUPEN4[
10]
RESERVED
23
22
21
20
19
18
17
16
RESERVED
15
14
13
12
11
10
9
8
RESERVED OMDEN4
[10]
RESERVED
7
6
5
4
3
2
1
0
RESERVED
BITS
DESCRIPTION
[31:27] RESERVED
-
[26]
PUPEN4
GPIO28 pin internal pull-up resister enable
There is 1 bit for this register, the bit is set to “1” will enable pull-up
resister on IO pin.
1 = enable
0 = disable
After power on the pull-up resister is disabled
[25:11] RESERVED
-
[10]
OMDEN4
GPIO28 output mode enable
1 = enable
0 = disable
NOTE: Output mode enable bits are valid only when bit
PT4CFG10 is configured as general purpose I/O mode.
Each port pin can be enabled individually by setting the
corresponding control bit.
[9:0] RESERVED
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