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Altera_Forum's avatar
Altera_Forum
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8 years ago

JTAG connection issue

Hi all, I have a board that configured the Cyclone 4 E device JTAG signals with 2.5V with 100 ohm series resistor on all signals and TMS, TDI pulled up to 2.5V through 2.2k resistors. I ob...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

My previous post with the schematics disappeared and I guess did not get approved in a few days. So I try to upload the schematics again.

Note that the JTAG signals are also connected to a system controller PLD, which are supposed to be in high impedance state.