Allwinner A20 - Page 240

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 240 / 812
Offset: 0x00
Register Name: PA_CFG0
Default Value: 0x0000_0000
Bit
Read/Write
Default
Description
23
/
/
/
22:20
R/W
0
PA5_SELECT
000: Input 001: Output
010: ETXD2 011: SPI3_CS0
100: Reserved 101: GTXD2
110: Reserved 111: Reserved
19
/
/
/
18:16
R/W
0
PA4_SELECT
000: Input 001: Output
010: ETXD3 011: SPI1_CS1
100: Reserved 101: GTXD3
110: Reserved 111: Reserved
15
/
/
/
14:12
R/W
0
PA3_SELECT
000: Input 001: Output
010: ERXD0 011: SPI1_MISO
100: UART2_RX 101: GRXD0
110: Reserved 111: Reserved
11
/
/
/
10:8
R/W
0
PA2_SELECT
000: Input 001: Output
010:ERXD1 011: SPI1_MOSI
100: UART2_TX 101: GRXD1
110: Reserved 111: Reserved
7
/
/
/
6:4
R/W
0
PA1_SELECT
000: Input 001: Output
010: ERXD2 011: SPI1_CLK
100: UART2_CTS 101: GRXD2
110: Reserved 111: Reserved
3
/
/
Reserved
2:0
R/W
0
PA0_SELECT
000: Input 001: Output