Allwinner A20 - Page 266

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 266 / 812
Bit
Read/Write
Default
Description
31:24
/
/
/
[2i+1:2i]
(i=0~11)
R/W
0x1
PD_DRV
PD[n] Multi-Driving Select (n = 16~27)
00: Level 0 01: Level 1
10: Level 2 11: Level 3
1.19.4.35. PD PULL REGISTER 0
Offset: 0x88
Register Name: PD_PULL0
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description
[2i+1:2i]
(i=0~15)
R/W
0x0
PD_PULL
PD[n] Pull-up/down Select (n = 0~15)
00: Pull-up/down disable 01: Pull-up
10: Pull-down 11: Reserved
1.19.4.36. PD PULL REGISTER 1
Offset: 0x8C
Register Name: PD_PULL1
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description
31:24
/
/
/
[2i+1:2i]
(i=0~11)
R/W
0x0
PD_PULL
PD[n] Pull-up/down Select (n = 16~27)
00: Pull-up/down disable 01: Pull-up enable
10: Pull-down 11: Reserved
1.19.4.37. PE CONFIGURE REGISTER 0
Offset: 0x90
Register Name: PE_CFG0
Default Value: 0x0000_0000