UM_S3C2501X Datasheet, PDF (426/465 Pages) Samsung semiconductor – 32-BIT RISC MICROPROCESSOR

S3C2501X
I/O PORTS
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
IOPMODE1 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X
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
IOPMODE2 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X
NOTE: IOPMODE1/2 registers bit value 1 is input mode, bit value 0 is output mode.
Bit
31
30
29
28
27
26
25
24
See NOTE on
23
Page 12-1.
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
IOPMODE1
Signal port
Reset value
GPIO[31]
1
GPIO[30]
1
GPIO[29]
1
GPIO[28]
1
GPIO[27]
0
GPIO[26]
0
GPIO[25]
0
GPIO[24]
0
GPIO[23]
0
GPIO[22]
0
GPIO[21]
0
GPIO[20]
0
GPIO[19]
0
GPIO[18]
0
GPIO[17]
1
GPIO[16]
1
GPIO[15]
1
GPIO[14]
1
GPIO[13]
1
GPIO[12]
1
GPIO[11]
1
GPIO[10]
1
GPIO[9]
1
GPIO[8]
1
GPIO[7]
1
GPIO[6]
1
GPIO[5]
1
GPIO[4]
1
GPIO[3]
1
GPIO[2]
1
GPIO[1]
1
GPIO[0]
1
IOPMODE2
Signal port
Reset value
GPIO[63]
1
GPIO[62]
1
GPIO[61]
1
GPIO[60]
1
GPIO[59]
1
GPIO[58]
1
GPIO[57]
1
GPIO[56]
1
GPIO[55]
1
GPIO[54]
1
GPIO[53]
1
GPIO[52]
1
GPIO[51]
1
GPIO[50]
1
GPIO[49]
1
GPIO[48]
1
GPIO[47]
1
GPIO[46]
1
GPIO[45]
1
GPIO[44]
1
GPIO[43]
1
GPIO[42]
1
GPIO[41]
1
GPIO[40]
1
GPIO[39]
1
GPIO[38]
1
GPIO[37]
1
GPIO[36]
1
GPIO[35]
1
GPIO[34]
1
GPIO[33]
1
GPIO[32]
1
Figure 12-1. I/O Port Mode Registers 1/2 (IOPMODE1/2)
12-3