2. 技术支持
  3. AR# 3524: M1.4 Map - Map creates an illegal IOB configuration with conflicting EC pin and OMUX usage.
  4. AR# 35245: MIG Spartan-6 MCB - User Interface cannot send commands until calibration completes (cal_done asserts)

AR# 35245

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MIG Spartan-6 MCB - User Interface cannot send commands until calibration completes (cal_done asserts)

描述

The MIG Spartan-6 FPGA MCB design completes a calibration procedure upon reset. During this time, any commands sent from the User Interface are ignored and lost. The commands are not queued until calibration completes. Because of this, users must design their data/command generation such that no commands are requested until cal_done asserts.

解决方案

The cal_done signal is an output of the top-level rtl generated by MIG ("example_design/rtl/example_top.v/.vhd" or "user_design/rtl/core_name.n.vhd"). Ensure user logic waits for cal_done = 1 before requesting any reads/writes.

The MIG design starting in v3.5 (available with ISE 12.2) will store any commands requested by the user and complete the requests once calibration completes.

链接问答记录

主要问答记录

Answer Number 问答标题 问题版本 已解决问题的版本
34587 MIG v3.4 - Release Notes and Known Issues for ISE Design Suite 12.1 N/A N/A

相关答复记录

Answer Number 问答标题 问题版本 已解决问题的版本
34587 MIG v3.4 - Release Notes and Known Issues for ISE Design Suite 12.1 N/A N/A
AR# 35245
日期 12/15/2012
状态 Archive
Type 综合文章
IP
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