AN 712: Altera JESD204B MegaCore Function and ADI AD9625 Hardware Checkout Report

ID 683294
Date 6/13/2016

1.4.3. Descrambling

The ramp or PRBS checker at the RX transport layer checks the data integrity of the descrambler. The SignalTap II Logic Analyzer tool monitors the operation of the RX transport layer.

Table 4.  Descrambler Test Case

Test Case



Passing Criteria


Check the functionality of the descrambler using ramp test or PRBS-23 test pattern.

Enable scrambler at the ADC and descrambler at the RX JESD204B IP core.

The signals that are tapped in this test case are similar to test case TL.1

  • The jesd204_rx_data_valid signal is asserted.
  • The data_error and jesd204_rx_int signals are deasserted.

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