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Honored Contributor

11 years ago

Cyclone III 144 QFP package forgot the ground pad on circuit board

Our circuit board guy forgot to put a ground pad on the board for the 144 pin package on the bottom of the chip. We are unable to detect it thru the JTAG port and assuming that is why. What may al...

multiple-attachments.zip116 KB

Altera_Forum

Honored Contributor

11 years ago

Attached is a snip of the schematic.

I think its not about that pad grounded, but some other pin must be configured wrong, but I've copied demo boards and double checked everything, still no JTAG detection.

http://www.alteraforum.com/forum/attachment.php?attachmentid=9619&stc=1

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Cyclone III 144 QFP package forgot the ground pad on circuit board

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