AR# 56272

Zynq-7000 SoC - PROG_B must be pullup during BootROM execution in production silicon


If during boot the PROG_B signal is held LOW, the BootROM  waits while trying to clear the PL.

Only after a timeout (few minutes long) the BootROM goes in Secure Lock Down.

The user will not be able to see the DAP in the JTAG chain.

This behavior is different from GES where the DAP is available even if booting with PROG_B LOW.

Visit Zynq-7000 SoC Solution Center (Xilinx Answer 52512) to address all questions related to the Zynq-7000 SoC.


Be sure that PROG_B is pulled up (HIGH) during boot.



Answer Number 问答标题 问题版本 已解决问题的版本
56195 Zynq-7000 SoC 设计咨询:适用于 ES 芯片的设计为什么现在不能通过生产芯片启动? N/A N/A
AR# 56272
日期 05/28/2018
状态 Active
Type 已知问题