Polynomial Example

Files

We will illustrate the command-response FIFO design mehodology with an example of a simple polynomial accelerator. The accelerator computes a polynomial function of x[k]:

y[k] = a[0] + a[1]*x[k] + ... + a[d-1]*x[k]**d

All the examples can be found in hwdesign/demos/stream with the main notebook in poly_demo.ipynb.

Protocol

The IP we will build will follow the folliwng command-response FIFO protocol:

  • The PS sends a PolyCmdHdr with the coefficients, coeffs, number of samples, nsamp, and a transaction ID, tx_id.
  • The IP repsonds with a PolyRespHdr message with the transcation ID, tx_id. This ensures that the IP is in sync and has received the data.
  • The PS then starts streaming the input data array x.
  • As the data streams in, the IP computes the output data array y.
  • When complete the IP sends a PolyRespFtr message with an indication of the number of samples and any error code.

Go to defining the data structures

Message Definitions

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