Visible to Intel only — GUID: yca1676325959419
Ixiasoft
Visible to Intel only — GUID: yca1676325959419
Ixiasoft
11.5.1. FPGA-to-HPS Bridge
The FPGA-to-HPS (F2H) bridge provides a cache-coherent memory access path from an FPGA manager to HPS resources, such as DDR and OCRAM. This bridge consists of a single physical ACE5-Lite 256-bit non-configurable interface.
The figure below shows the F2H block diagram.
The following table shows the F2H bridge signals.
Name | Direction | Description |
---|---|---|
fpga2hps_clock | Input | Clock from a single source in the FPGA. |
fpga2hps_reset | Input | Async active high reset to the bridge. |
The following table lists the properties of the F2H bridge, including the interface exposed to the FPGA fabric.
Bridge Property | Value |
---|---|
Protocol | AMBA 5 ACE5-Lite55 |
Clock | fpga2hps_clock (from FPGA) |
Data width | 256-bit |
Address width | 40-bit |
ID width | 5-bit |
Fixed burst | No |
Min narrow burst size | 1 byte |
Max wrap burst length | 16 |
Read interleaving | Yes |
Ready latency requirement | Yes |
A*Region Width | 0 |
A*Len Width | 7 (256) |
A*QoS Width | 4 |
nPendingTrans (Issuance/Acceptance) | 16 |
nPendingOrderID | 16 |