AN 710: Altera JESD204B MegaCore Function and ADI AD9680 Hardware Checkout Report

ID 683170
Date 5/11/2015

1.4.3. Descrambling

The PRBS checker at the RX transport layer checks the data integrity of descrambler.

The SignalTap II Logic Analyzer tool monitors the operation of the RX transport layer.

Table 4.  Descrambler Test Cases

Test Case



Passing Criteria


Check the functionality of the descrambler using PRBS-9 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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