JESD204B IP Core Design Example User Guide

ID 683094
Date 11/06/2017

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Document Table of Contents Pattern Generator

The pattern generator instantiates any supported generators and has an output multiplexer to select which generated pattern to forward to the transport layer based on the test mode during run time. Additionally, the pattern generator also supports run-time reconfiguration (downscale) on the number of converters per device (M) & samples per converter per frame (S).

The pattern generator can be a parallel PRBS, alternate checkerboard, or ramp wave generator. The data output bus width of the pattern generator is equivalent to the value of FRAMECLK_DIV × M × S × N.

The pattern generator includes a REVERSE_DATA parameter to control data arrangement at the output. The default value of this parameter is 0.
  • 0—no data rearrangement at the output of the generator.
  • 1—data rearrangement at the output of the generator.

For example, when M=2, S=1, N=16, F1/F2_FRAMECLK_DIV=1, the input or output data width equals to [31:0], with the following data arrangement:

  • 0: {m1s0[31:16], m0s0[15:0]}
  • 1: {m0s0[31:16], m1s0[15:0]}