Allwinner A20 - Page 288

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 288 / 812
Offset: 0x120
Register Name: PI_CFG0
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description
100: Reserved 101: Reserved
110: Reserved 111: Reserved
15
/
/
/
14:12
R/W
0
PI3_SELECT
000: Input 001: Output
010: PWM1 011: TWI4_SDA
100: Reserved 101: Reserved
110: Reserved 111: Reserved
11
/
/
/
10:8
R/W
0
PI2_SELECT
000: Input 001: Output
010: Reserved 011: TWI4_SCK
100: Reserved 101: Reserved
110: Reserved 111: Reserved
7
/
/
/
6:4
R/W
0
PI1_SELECT
000: Input 001: Output
010: Reserved 011: TWI3_SDA
100: Reserved 101: Reserved
110: Reserved 111: Reserved
3
/
/
/
2:0
R/W
0
PI0_SELECT
000: Input 001: Output
010: Reserved 011: TWI3_SCK
100: Reserved 101: Reserved
110: Reserved 111: Reserved
1.19.4.73. PI CONFIGURE REGISTER 1
Offset: 0x124
Register Name: PI_CFG1
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description