Type: Answers


Last Modified: February 13, 2006

What is the state of I/O pins after EXTEST Boundary-Scan Testing instruction on a blank in-system programmability (ISP)- or in-circuit reconfigurability (ICR)-capable device?

Description

The I/O pins of an unprogrammed device will be tri-stated before and after EXTEST. During EXTEST, the I/O pins will drive out based on the test vectors