Allwinner A20 - Page 251

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 251 / 812
Bit
Read/Write
Default
Description
[2i+1:2i]
(i=0~15)
R/W
0x1
PB_DRV
PB[n] Multi-Driving Select (n = 0~15)
00: Level 0 01: Level 1
10: Level 2 11: Level 3
1.19.4.16. PB MULTI-DRIVING REGISTER 1
Offset: 0x3C
Register Name: PB_DRV1
Default Value: 0x0000_5555
Bit
Read/Write
Default
Description
31:16
/
/
/
[2i+1:2i]
(i=0~7)
R/W
0x1
PB_DRV
PB[n] Multi-Driving Select (n = 16~23)
00: Level 0 01: Level 1
10: Level 2 11: Level 3
1.19.4.17. PB PULL REGISTER 0
Offset: 0x40
Register Name: PB_PULL0
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description
[2i+1:2i]
(i=0~15)
R/W
0x0
PB_PULL
PB[n] Pull-up/down Select (n = 0~15)
00: Pull-up/down disable 01: Pull-up
10: Pull-down 11: Reserved
1.19.4.18. PB PULL REGISTER 1
Offset: 0x44
Register Name: PB_PULL1
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description