This document is a specification for the register interface of the FPGA module example.
This file is automatically generated by hdl_registers. Generated 2022-09-29 22:04 from file regs_example.toml at commit 439807c202d6c110.
The following register modes are available.
| Mode | Description |
|---|---|
| Read | Bus can read a value that fabric provides. |
| Write | Bus can write a value that is available for fabric usage. |
| Read, Write | Bus can write a value and read it back. The written value is available for fabric usage. |
| Write-pulse | Bus can write a value that is asserted for one clock cycle in fabric. |
| Read, Write-pulse | Bus can read a value that fabric provides. Bus can write a value that is asserted for one clock cycle in fabric. |
The following registers make up the register map.
| Name | Index | Address | Mode | Default value | Description |
|---|---|---|---|---|---|
| configuration | 0 | 0x0000 | Read, Write | 0xB | This is the description of my register. Rudimentary RST formatting can be used, such as boldface and italics. |
| enable | 0 | 0b1 | Description of the enable bit field. | ||
| data_tag | 4:1 | 0b0101 | Description of my data_tag bit vector field. | ||
| status | 1 | 0x0004 | Read | 0x1 | |
| idle | 0 | 0b1 | '1' when the module is inactive and a new run can be launched. '0' when the module is working. |
||
| stalling | 1 | 0b0 | '1' if the module is currently being stalled. | ||
| counter | 9:2 | 0b00000000 | Number of bursts that have finished. | ||
| command | 2 | 0x0008 | Write-pulse | 0x0 | The value written to this register will be asserted for one clock cycle in the FPGA fabric. |
| start | 0 | 0b0 | Write this bit to start operation. | ||
| flush | 1 | 0b0 | Write this bit to flush data in progress. | ||
| Register array base_addresses, repeated 3 times. Iterator i ∈ [0, 2]. | One set of base addresses for each feature. | ||||
| read_address | 3 + i × 2 | 0x000C + i × 0x0008 | Read, Write | 0x0 | |
| address | 27:0 | 0b0000000000000000000000000000 | Read address for a 256 MiB address space. | ||
| write_address | 4 + i × 2 | 0x0010 + i × 0x0008 | Read, Write | 0x0 | |
| address | 27:0 | 0b0000000000000000000000000000 | Write address for a 256 MiB address space. | ||
| End register array base_addresses. | |||||
The following constants are part of the register interface.
| Name | Value (decimal) | Value (hexadecimal) | Description |
|---|---|---|---|
| axi_data_width | 64 | 0x00000040 | Data width of the AXI port used by this module. |
| address_alignment | 4096 | 0x00001000 | The required address alignment for memory buffers. |