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Ixiasoft
Visible to Intel only — GUID: sfo1410068148169
Ixiasoft
9.3.3. Functional Description of the Lightweight HPS-to-FPGA Bridge
The lightweight HPS-to-FPGA bridge has a fixed data width of 32 bits.
Use the lightweight HPS-to-FPGA bridge as a secondary, lower-performance master interface to the FPGA fabric. With a fixed width and a smaller address space, the lightweight bridge is useful for low-bandwidth traffic, such as memory-mapped register accesses to FPGA peripherals. This approach diverts traffic from the high-performance HPS-to-FPGA bridge, and can improve both register access latency and overall system performance.
Bridge Property | Value |
---|---|
Data width |
32 bits |
Clock domain |
lwh2fpga_clk (max 200 MHz) |
Byte address width |
21 bits |
ID width |
4 bits |
Read acceptance |
16 transactions |
Write acceptance |
16 transactions |
Total acceptance |
16 transactions |
The lightweight HPS-to-FPGA bridge is configurable in the HPS component parameter editor, available in Platform Designer and the IP Catalog. The HPS component parameter editor allows you to set the bridge protocol, according to the FPGA bitstream.