Altera JESD204B IP Manual de usuario Pagina 153

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Transport Layer
Verify the RX transport layer operation using these signals in the altera_jesd204_transport_rx_top.sv:
jesd204_rx_dataout
jesd204_rx_data_valid
jesd204_rx_data_ready
jesd204_rx_link_data_ready
jesd204_rx_link_error
rxframe_rst_n
Use the rxframe_clk signal as the sampling clock.
For normal operation, the jesd204_rx_data_valid, jesd204_rx_data_ready, and
jesd204_rx_link_data_ready signals should be asserted while the jesd204_rx_link_error should be
deasserted. You can view the ramp or sine wave test pattern on the jesd204_rx_dataout bus.
Figure 7-2: Ramp Pattern on the jesd204_rx_dataout Bus
This is a SignalTap II image during the JESD204B user data phase with ramp pattern transmitted from the
ADC.
Verify the TX transport layer operation using these signals in the altera_jesd204_transport_tx_top.sv:
txframe_rst_n
jesd204_tx_datain
jesd204_tx_data_valid
jesd204_tx_data_ready
jesd204_tx_link_early_ready
jesd204_tx_link_data_valid
jesd204_tx_link_error
Use the txframe_clk signal as the sampling clock.
For normal operation, the jesd204_tx_data_valid, jesd204_tx_data_ready,
jesd204_tx_link_early_ready, and jesd204_tx_link_data_valid signals should be asserted while
the jesd204_tx_link_error should be deasserted. You can verify the user data arrangement (shown in
the data mapping tables in the TX Path Data Remapping on page 5-18) by referring to the
jesd204_tx_datain bus.
7-6
Debugging JESD204B Link Using SignalTap II and System Console
UG-01142
2015.05.04
Altera Corporation
JESD204B IP Core Debug Guidelines
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