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Altera_Forum
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16 years ago

FPS and PS

Hi,all we use Arria II fpga.we can not program arria II with FPS or FPPmode.but can program the fpga with PS correctly. what's differences between FPS and PS(standard)? Is it about PO...
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Altera_Forum
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16 years ago

Arria II GX does not support the notion of "Fast Passive Serial" configuration. There is only one configuration speed (Passive Serial). However, I see from the datasheet that the MSEL pin settings determine the POR delay time.

--- Quote Start ---

Here is what the Arria II GX handbook has to say regarding POR:

POR circuitry is important to ensure that all the circuits in the Arria II GX device are at

certain known states during power up. You can select the POR signal pulse width

between fast POR time or standard POR time using the MSEL pin settings. For fast

POR time, the POR signal pulse width is set to 4 ms for the power supplies to ramp up

to full rail. For standard POR time, the POR signal pulse width is set to 100 ms for the

power supplies to ramp up to full rail. In both cases, you can extend the POR time

with an external component to assert the nSTATUS pin low.

--- Quote End ---

Jake