Visible to Intel only — GUID: vbt1481129374755
Ixiasoft
Visible to Intel only — GUID: vbt1481129374755
Ixiasoft
7.4.1. HPS-to-FPGA Bridge Signals
All the HPS-to-FPGA bridge master signals have a fixed width except the data and write strobes for the read and write data channels. The variable-width signals depend on the data width setting of the bridge interface exposed to the FPGA logic.
The HPS-to-FPGA bridge incorporates the ARM® TrustZone* technology by providing the ARPROT[1] and AWPROT[1] signals, which specify whether a transaction is secure or non-secure. The firewalls use these signals to determine whether each bus access is valid.
All peripheral slaves and memories in the SoC are secure when they are released from reset.
The following table lists signals exposed by the HPS-to-FPGA master interface to the FPGA fabric.
Signal | Width | Direction | Description |
---|---|---|---|
AWID | 4 bits |
Output |
Write address ID |
AWADDR | 32 bits |
Output |
Write address |
AWLEN | 8 bits |
Output |
Burst length |
AWSIZE | 3 bits |
Output |
Burst size |