Documentation of caesar registers

This document is a specification for the register interface of the FPGA module caesar.

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Register modes

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.

Registers

This module does not have any registers.

Constants

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