gpio

general purpose i/o

s3c6410

1 gpa-

2 b

3 c

4 d

5 e

6 f

7 g

8 h

9 i

10 j

11 k

12 l

13 m

14 n

15 o

16 p

17 gpq

GPxCON: configure

GPxDAT: data

GPxUD: up/down (是否使用上拉电阻)

GPxCONSLP

GPxPUDSLP

SLP=sleep

GPIO consists of two part, alive-part and off-part. In Alive-part power is supplied on sleep mode

,but in off-part it is not the same, therefore, the registers in alive-part can keep their values during sleep mode.