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ZhiqiangLiang's avatar
ZhiqiangLiang
Icon for Occasional Contributor rankOccasional Contributor
6 months ago
Solved

how to set those parameters of clock crossing bridge?

Hi, My FPGA model is Cyclone 10 LP 10CL120YF484. on Platform Designer, NIOS frequency is 80MHz, and my IP is 160MHz. In NIOS C code, I would like to read/write registers of my IP. In my design, ...
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KennyT_altera's avatar
KennyT_altera
Icon for Super Contributor rankSuper Contributor
6 months ago

When using an Avalon-MM Clock Crossing Bridge between an 80 MHz NIOS and a 160 MHz IP, connect the bridge’s master port to NIOS (the Avalon-MM master) and the slave port to the IP (the Avalon-MM slave). This ensures proper data flow and safe clock domain crossing. Reversing the connection may seem to work but can cause unreliable behavior. Always connect based on which side initiates the transactions.