Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

problem with cyclone III and jtag

I would like to put a very serious discussion about using jtag with cyclone III. has cyclone3 less electrical tolerance compared to other FPGA's?????? . we are building a custom board. and t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

If the supply is given 3.3V instead of VCCA i.e 2.5, is it damages the FPGA. In our board we are using 3.3V instead of 2.5V. The board is working in JTAG configuration. But after some time in two to three boards We are facing the JTAG port defective in our board as ashishsingh says. Please confirm. And also suggest any buffer that can be put in between JTAG port and FPGA