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Altera_Forum
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12 years ago

configuring 2 FPGAs in PS mode

I have 2 FPGAs Cyclone IV in my board design and I want to be able to reconfigure them by the CPU separately, means reconfigure one while the other is still in user mode . Which signals should I sepa...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

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I want to be able to reconfigure them by the CPU separately

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You need to treat them as completely separate devices, eg., all the PS control signals need to be separated.

If you need to have the devices configure in two-device PS mode at some times, and then in single device PS mode at other times, you can use tri-state buffers or bus-switches on the PS signals, and use the CPU to select the appropriate operating mode.

Feel free to post a diagram showing what you are trying to do, and forum members will take a look.

Cheers,

Dave