Allwinner A20 - Page 249

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 249 / 812
Offset: 0x2C
Register Name: PB_CFG2
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description
100: Reserved 101: Reserved
110: Reserved 111: Reserved
23
/
/
Reserved
22:20
R/W
0
PB21_SELECT
000: Input 001: Output
010: TWI2_SDA 011: Reserved
100: Reserved 101: Reserved
110: Reserved 111: Reserved
19
/
/
/
18:16
R/W
0
PB20_SELECT
000: Input 001: Output
010: TWI2_SCK 011: Reserved
100: Reserved 101: Reserved
110: Reserved 111: Reserved
15
/
/
/
14:12
R/W
0
PB19_SELECT
000: Input 001: Output
010: TWI1_SDA 011: Reserved
100: Reserved 101: Reserved
110: Reserved 111: Reserved
11
/
/
/
10:8
R/W
0
PB18_SELECT
000: Input 001: Output
010: TWI1_SCK 011: Reserved
100: Reserved 101: Reserved
110: Reserved 111: Reserved
7
/
/
/
6:4
R/W
0
PB17_SELECT
000: Input 001: Output
010: SPI2_MISO 011: JTAG_DI0
100: Reserved 101: Reserved
110: Reserved 111: Reserved
3
/
/
/