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Altera_Forum
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17 years ago

Stratix III JTAG Failure

Hi All, I have problem on Stratix III device on my Custom development board. Device: Stratix III - EP3SL340 Download cable : Altera USB Blaster We have provided two configura...
Altera_Forum's avatar
Altera_Forum
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17 years ago

Hi FvM,

Infact I have removed the connector & measured the impedance between TCK to GND. It remains 2ohm between TCK to GND..

Also I am maintaining 3W spacing in the layout for TCK from other net. The closest net is TDO which is 18 mil away from this TCK.

For your reference I have attached the bmp file which will shows the TCK routing on my board.

I am suspect something happened to the internal buffer of the FPGA.

Is there anyway to find out the internal buffer shortage. Isolated the