Allwinner A20 - Security JTAG Register List; Security JTAG Register Description

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 227 / 812
1.17.2. Security JTAG Register List
Module Name
Base Address
SJTAG
0x01C23C00
1.17.3. Security JTAG Register Description
1.17.3.1. SJTAG PASSWORD 0 REGISTER
Offset: 0x00
Register Name: SJTAG_PWD0
Default Value: 0xXXXX_XXXX
Bit
Read/Write
Default
Description
31:0
W
x
JTAG_PWD
SJTAG Password [31:0]
1.17.3.2. SJTAG PASSWORD 1 REGISTER
Offset: 0x04
Register Name: SJTAG_PWD1
Default Value: 0xXXXX_XXXX
Bit
Read/Write
Default
Description
31:0
W
x
JTAG_PWD
SJTAG Password [63:32]
1.17.3.3. SJTAG STATUS REGISTER
Offset: 0x08
Register Name: SJTAG_STATUS
Default Value: 0xXXXX_XXXX
Bit
Read/Write
Default
Description
31:1
/
/
/
0
R
x
JTAG_ONOFF_FLAG
JTAG function ON/OFF flag