Allwinner A20 - Page 244

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 244 / 812
1.19.4.6. PA MULTI-DRIVING REGISTER 0
Offset: 0x14
Register Name: PA_DRV0
Default Value: 0x5555_5555
Bit
Read/Write
Default
Description
[2i+1:2i]
(i=0~15)
R/W
0x1
PA_DRV
PA[n] Multi-Driving Select (n = 0~15)
00: Level 0 01: Level 1
10: Level 2 11: Level 3
1.19.4.7. PA MULTI-DRIVING REGISTER 1
Offset: 0x18
Register Name: PA_DRV1
Default Value: 0x0000_0005
Bit
Read/Write
Default
Description
31:4
/
/
/
[2i+1:2i]
(i=0~1)
R/W
0x1
PA_DRV
PA[n] Multi-Driving Select (n = 16~17)
00: Level 0 01: Level 1
10: Level 2 11: Level 3
1.19.4.8. PA PULL REGISTER 0
Offset: 0x1C
Register Name: PA_PULL0
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description
[2i+1:2i]
(i=0~15)
R/W
0x0
PA_PULL
PA[n] Pull-up/down Select (n = 0~15)
00: Pull-up/down disable 01: Pull-up
10: Pull-down 11: Reserved