Allwinner A20 - Page 428

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 428 / 812
Offset: 0x0F0
Register Name: TCON1_IO_POL_REG
Bit
Read/
Write
Default/
Hex
Description
23:0
R/W
0
Data_Inv:
TCON1 output port D[23:0] polarity control, with
independent bit control:
0s: normal polarity
1s: invert the specify output
5.1.4.31. TCON1 IO CONTROL REGISTER
Offset: 0x0F4
Register Name: TCON1_IO_TRI_REG
Bit
Read/
Write
Default/Hex
Description
31:28
/
/
/
27
R/W
1
IO3_Output_Tri_En
1: disable
0: enable
26
R/W
1
IO2_Output_Tri_En
1: disable
0: enable
25
R/W
1
IO1_Output_Tri_En
1: disable
0: enable
24
R/W
1
IO0_Output_Tri_En
1: disable
0: enable
23:0
R/W
0xFFFFFF
Data_Output_Tri_En
TCON1 output port D[23:0] output enable, with independent
bit control:
1s: disable
0s: enable
5.1.4.32. TCON CEU CONTROL REGISTER
Offset: 0x100
Register Name: TCON_CEU_CTL_REG
Bit
Read/
Write
Default/H
ex
Description