Allwinner A20 - 1.17. Security JTAG

To Next Page

To Previous Page

1.17. Security JTAG

1.17.1. Overview

This is authentication module for security JTAG. There are two bits in EFUSE field. The two bits can

be program before ship. One bit is used for enable/disable JTAG function and another bit is used for

whether JTAG authentication function is ON. When JTAG function and JTAG authentication function

is ON, the user must provide JTAG password before using JTAG function.