Description: The SOPC experiment - custom PWM components: take a PWM component with an Avalon Slave interface as an example of how to customize the components. An Avalon Slave interface can have CLK, chipselect, address, read, readdata, write, and writedata, but none of these signals are required.
A, functionality,
The PWM component we are implementing has the following functions:
1. The period of PWM can be changed.
2. PWM can be changed to the duty register.
Ii. Design of Avalon Slave interface signal
1. Clk: clock for PWM;
2. Write: Write signals that can use the Avalon Slave bus to use the period and duty values from the Nios II application
Transport to component logic.
3. Writedata: write data. The period and duty values are transmitted through this data line.
4. Address: there are two registers in this example, so one Address line is available.
5. Global signal. The output of PWM in this example is used to drive LED lights, which do not belong to Avalon
The signal.
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