Allwinner A20 - Page 247

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 247 / 812
1.19.4.11. PB CONFIGURE REGISTER 1
Offset: 0x28
Register Name: PB_CFG1
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description
31
/
/
/
30:28
R/W
0
PB15_SELECT
000: Input 001: Output
010: SPI2_CLK 011: JTAG_CK0
100: Reserved 101: Reserved
110: Reserved 111: Reserved
27
/
/
/
26:24
R/W
0
PB14_SELECT
000: Input 001: Output
010: SPI2_CS0 011: JTAG_MS0
100: Reserved 101: Reserved
110: Reserved 111: Reserved
23
/
/
/
22:20
R/W
0
PB13_SELECT
000: Input 001: Output
010: SPI2_CS1 011: Reserved
100: SPDIF_DO 101: Reserved
110: Reserved 111: Reserved
19
/
/
/
18:16
R/W
0
PB12_SELECT
000: Input 001: Output
010: I2S_DI 011: AC97_DI
100: SPDIF_DI 101: Reserved
110: Reserved 111: Reserved
15
/
/
/
14:12
R/W
0
PB11_SELECT
000: Input 001: Output
010: I2S_DO3 011: Reserved
100: Reserved 101: Reserved
110: Reserved 111: Reserved
11
/
/
/
10:8
R/W
0
PB10_SELECT