Allwinner A20 - Page 293

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 293 / 812
Offset: 0x138
Register Name: PI_DRV1
Default Value: 0x0000_0555
Bit
Read/Write
Default
Description
10: Level 2 11: Level 3
1.19.4.79. PI PULL REGISTER 0
Offset: 0x13C
Register Name: PI_PULL0
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description
[2i+1:2i]
(i=0~15)
R/W
0x0
PI_PULL
PI[n] Pull-up/down Select (n = 0~15)
00: Pull-up/down disable 01: Pull-up
10: Pull-down 11: Reserved
1.19.4.80. PI PULL REGISTER 1
Offset: 0x140
Register Name: PI_PULL1
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description
31:12
/
/
/
[2i+1:2i]
(i=0~5)
R/W
0x0
PI_PULL
PI[n] Pull-up/down Select (n = 16~21)
00: Pull-up/down disable 01: Pull-up
10: Pull-down 11: Reserved
1.19.4.81. PIO INTERRUPT CONFIGURE REGISTER 0
Offset: 0x200
Register Name: PIO_INT_CFG0
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description
[4i+3:4i]
R/W
0
PIO_INT_CFG