AN 733: Altera JESD204B IP Core and TI ADC12J4000 Hardware Checkout Report

ID 683135
Date 2/09/2015

1.4.2. Receiver Transport Layer

To check the data integrity of the payload data stream through the RX JESD204B IP core and transport layer, the ADC is configured to output long transport layer test pattern. The ADC is also set to operate with the same configuration as set in the JESD204B IP core. The long transport layer test pattern (as defined in the JESD204B specification section is observed at the data output of the RX transport layer.

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

Table 3.  Long Transport Layer Test Cases

Test Case



Passing Criteria


Check the transport layer mapping using long transport layer test pattern.

The following signals in are tapped:

  • jesd204_rx_data_valid
  • jesd204_rx_dataout[(M*N*FRAMECLK_DIV)-1:0] 3

The jesd204_rx_int signal in is tapped.

The rxframe_clk is used as the SignalTap II sampling clock.

  • The jesd204_rx_data_valid signal is asserted.
  • The long transport layer test pattern observed at jesd204_rx_dataout signal is correct
  • The jesd204_rx_int signal is deasserted.
3 M is the number of converters per device. N is the number of conversion bits per converter. FRAMECLK_DIV is the divider ratio on the frame_clk signal.

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