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Altera_Forum
Honored Contributor
14 years agoLets see ...
--- Quote Start --- The reset string is : 0 0 1 1 1 1 1 1 0 0 1 1 1 1 1 0 0 0 1 1 1 1 1 1 0 0 1 1 1 1 1 0 0 0 1 1 1 1 1 1 0 0 1 1 1 1 1 0 0 0 1 1 1 1 1 1 0 0 1 1 1 1 1 0 0 0 1 1 1 1 1 1 0 0 1 1 1 1 1 0 0 0 1 1 1 1 1 1 --- Quote End --- This is the bit-mode TAP reset sequence; it starts but putting all JTAG signals high, and then toggles TCK 5 times. --- Quote Start --- 1 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 --- Quote End --- This is the 'alternative' method using byte-mode commands. The commands are; send a byte-mode command with 1-byte, followed by a byte of all 1's. This will toggle TCK 8 times. However, prior to this you need to set all the bits high, i.e., the correct sequence if using byte-mode is --- Quote Start --- 0 0 1 1 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 --- Quote End --- Cheers, Dave