Arria V Hard Processor System Technical Reference Manual
9.3.3.1. HPS-to-FPGA Bridge Master Signals
The following tables list all the signals exposed by the HPS-to-FPGA master interface to the FPGA fabric.
| Signal | Width | Direction | Description |
|---|---|---|---|
| AWID | 12 bits |
Output |
Write address ID |
| AWADDR | 30 bits |
Output |
Write address |
| AWLEN | 4 bits |
Output |
Burst length |
| AWSIZE | 3 bits |
Output |
Burst size |
| AWBURST | 2 bits |
Output |
Burst type |
| AWLOCK | 2 bits |
Output |
Lock type—Valid values are 00 (normal access) and 01 (exclusive access) |
| AWCACHE | 4 bits |
Output |
Cache policy type |
| AWPROT | 3 bits |
Output |
Protection type |
| AWVALID | 1 bit |
Output |
Write address channel valid |
| AWREADY | 1 bit |
Input |
Write address channel ready |
| Signal | Width | Direction | Description |
|---|---|---|---|
| WID | 12 bits |
Output |
Write ID |
| WDATA | 32, 64, or 128 bits |
Output |
Write data |
| WSTRB | 4, 8, or 16 bits |
Output |
Write data strobes |
| WLAST | 1 bit |
Output |
Write last data identifier |
| WVALID | 1 bit |
Output |
Write data channel valid |
| WREADY | 1 bit |
Input |
Write data channel ready |
| Signal | Width | Direction | Description |
|---|---|---|---|
| BID | 12 bits |
Input |
Write response ID |
| BRESP | 2 bits |
Input |
Write response |
| BVALID | 1 bit |
Input |
Write response channel valid |
| BREADY | 1 bit |
Output |
Write response channel ready |
| Signal | Width | Direction | Description |
|---|---|---|---|
| ARID | 12 bits |
Output |
Read address ID |
| ARADDR | 30 bits |
Output |
Read address |
| ARLEN | 4 bits |
Output |
Burst length |
| ARSIZE | 3 bits |
Output |
Burst size |
| ARBURST | 2 bits |
Output |
Burst type |
| ARLOCK | 2 bits |
Output |
Lock type—Valid values are 00 (normal access) and 01 (exclusive access) |
| ARCACHE | 4 bits |
Output |
Cache policy type |
| ARPROT | 3 bits |
Output |
Protection type |
| ARVALID | 1 bit |
Output |
Read address channel valid |
| ARREADY | 1 bit |
Input |
Read address channel ready |
| Signal | Width | Direction | Description |
|---|---|---|---|
| RID | 12 bits |
Input |
Read ID |
| RDATA | 32, 64, or 128 bits |
Input |
Read data |
| RRESP | 2 bits |
Input |
Read response |
| RLAST | 1 bit |
Input |
Read last data identifier |
| RVALID | 1 bit |
Input |
Read data channel valid |
| RREADY | 1 bit |
Output |
Read data channel ready |