This document is a specification for the register interface of the FPGA module caesar.
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The following register modes are available.
Mode | Description |
---|---|
Read |
Software can read a value that hardware provides. |
Write |
Software can write a value that is available for hardware usage. |
Read, Write |
Software can write a value and read it back. The written value is available for hardware usage. |
Write-pulse |
Software can write a value that is asserted for one clock cycle in hardware. |
Read, Write-pulse |
Software can read a value that hardware provides. Software can write a value that is asserted for one clock cycle in hardware. |
This module does not have any registers.
The following constants are part of the register interface.
Name | Value | Description |
---|---|---|
clock_frequency_hz |
156250000.0 |
The frequency in Hertz of the system clock. |
division_factor |
8.125 |