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Altera_Forum
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14 years ago

configuring multiple fpga's with multiple bitstreams via JTAG connection.

Hello People, I have successfully developped a special board with six fpga's (EP3C25) each fpga has its own EPCS16 configuration memory and they are programmed seperately on their own JTAG sock...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Thanks brothers, i am an "Altera Pupil" and have lots of things to learn from you.

With your advises, i have focused on Passive Serial (PS) method.

and i have some more questions;

1- What part can be used for serial flash memory ic? EPCS again? or more economic parts available? (i will need to memorize 6 seperate bitstreams (for cycloneIII - 25K) inside).

2- is the buffer really needed? i will have 6 or 8 fpgas on the chain. if needed, which parts can you advise me?

3- i will need to update the bitstreams in the memory ic. but the ic's data output is connected directly to the fpgas and no connection exists to the mcu. can i simply put a resistor on the existing line and connect the mcu directly before the resistor on the line? or how?

Regards...