Visible to Intel only — GUID: sfo1410068117780
Ixiasoft
Visible to Intel only — GUID: sfo1410068117780
Ixiasoft
9.2. HPS-FPGA Bridges Block Diagram and System Integration
The HPS-to-FPGA bridge is mastered by the level 3 (L3) main switch and the lightweight HPS-to-FPGA bridge is mastered by the L3 slave peripheral switch.
The FPGA-to-HPS bridge masters the L3 main switch, allowing any master implemented in the FPGA fabric to access most slaves in the HPS. For example, the FPGA-to-HPS bridge can access the accelerator coherency port (ACP) of the Cortex®-A9 MPU subsystem to perform cache-coherent accesses to the SDRAM subsystem.
All three bridges contain global programmers view (GPV) registers. The GPV registers control the behavior of the bridge. Access to the GPV registers of all three bridges is provided through the lightweight HPS-to-FPGA bridge.