I'm using ALTREMOTE IP in my Arria 10 project. I have followed these 2 recommendations in the User guide:
- Input clock of 20 MHz
- Asynchronous reset input to the IP core to initialize the machine to a valid state. The machine must be reset before first use, otherwise the state is not guaranteed to be valid.
My question is, is there any requirement (not mentioned in the doc) about the duration of the asynchronous reset? In my tests, I have tried 2 different resets (applied on power up): one that is ~25 us long and another one that is ~500 ms long. It only worked with the 500ms reset (I still have to narrow down the minimum duration for it to properly work); when using the 25us reset, the result of reading Reconfiguration Trigger Conditions parameter is incorrect.
Further checking with my team, Arria 10 should be quite fast. Around 2 clock cycle.
If using 20 MHz, is about 0.00005 ms. If 2 clock cycle should be around 0.00010 ms.
How do you measure 500 ms?
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