Article ID: 000080217 Content Type: Troubleshooting Last Reviewed: 09/11/2012
Why does boundary-scan testing (BST) fail immediately after I power up my FLEX device?
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Description As stated in AN 39 (Boundary Scan Testing in Altera Devices), BST for FLEX devices is supported before and after, but not during configuration. Therefore, if you are testing before configuration, you must hold nCONFIG low to prevent configuration from starting.