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Honored Contributor
Honored ContributorJTAG did not work.
Hello all. We are make PCIe board at Aria GX2. It's highly simplified kit from Altera. The DC/DC is working very good. But JTAGs didn't work at all. I can see signals at JTAG TDI, TMS, TCK but no...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- The JTAG tap controller enables TDO, when it's state advances to a SHIFT_DR or SHIFT_IR state. Never reaching this state (respectively not seeing TDO activated) in standard JTAG scan and similar actions most likely indicates: - device is held in reset, because one of the supply voltages required for JTAG operation (see the manual for details) --- Quote End --- Volatges is ok. Core - ok and IO Bank is ok. --- Quote Start --- is below it's reset threshold - TMS, TCK or TDO are not connected correctly --- Quote End --- I'm check this many times. It's ok. I'm even solder wire direct from JTAG pin to closed via from Arria chip.
