Rainbow Electronics W90N745CDG User Manual
Page 325
W90N745CD/W90N745CDG
Publication Release Date: September 22, 2006
-
321
-
Revision
A2
*In the following pin definition, mark with shading is default function.
11 10 01
00
PT1CFG0
NAME TYPE NAME TYPE
NAME TYPE NAME
TYPE
PORT1_0 -
-
-
nXDACK
O
GPIO18
I/O
11 10 01
00
PT1CFG1
NAME TYPE NAME TYPE
NAME TYPE NAME
TYPE
PORT1_1 -
-
-
nXDREQ
I
GPIO19
I/O
GPIO Port1 Direction Register (GPIO_DIR1)
REGISTER ADDRESS
R/W
DESCRIPTION
RESET
VALUE
GPIO_DIR1 0xFFF8_3014
R/W
GPIO
port0 in/out direction control
and pull-up enable register
0x0000_0000
31
30
29
28
27
26
25
24
RESERVED
23
22
21
20
19
18
17
16
RESERVED PUPEN1[1:0]
15
14
13
12
11
10
9
8
RESERVED
7
6
5
4
3
2
1
0
RESERVED OMDEN1[1:0]
BITS
DESCRIPTION
[31:18] RESERVED
-
[17:16]
PUPEN1
GPIO19 ~ GPIO18 port pins internal pull-up resister enable
This is a 2-bit registers, set corresponding bit to “1” will enable pull
up resister in IO pin.
1 = enable
0 = disable
After power on the resisters are disabled.
[15:2] RESERVED -