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Release Information
LVDS SERDES Intel® FPGA IP Features
LVDS SERDES IP Core Functional Modes
LVDS SERDES IP Core Functional Description
LVDS SERDES IP Initialization and Reset
LVDS SERDES Intel® FPGA IP Signals
LVDS SERDES Intel® FPGA IP Parameter Settings
LVDS SERDES Intel® FPGA IP Timing
LVDS SERDES Intel® FPGA IP Design Examples
Additional LVDS SERDES IP Core References
LVDS SERDES Intel® FPGA IP User Guide Archives
Document Revision History for LVDS SERDES Intel® FPGA IP User Guide: Intel® Arria® 10 and Intel® Cyclone® 10 GX Devices
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Resetting the DPA
If data corruption occurs, reset the DPA circuitry.
- Assert the rx_dpa_reset signal to reset the entire DPA block. After you reset the entire DPA block, the DPA must be retrained before capturing data.
You can also fix data corruption by resetting only the synchronization FIFO without resetting the DPA circuit, which means that system operation continues without having to retrain the DPA. To reset just the synchronization FIFO, assert the rx_fifo_reset signal.
- After rx_dpa_locked asserts, the LVDS SERDES IP is ready to capture data. The DPA finds the optimal sample location to capture each bit.
Intel recommends that you toggle the rx_fifo_reset signal after rx_dpa_locked asserts. Toggling rx_fifo_reset ensures that the synchronization FIFO is set with the optimal timing to transfer data between the DPA and the high-speed LVDS clock domains.
- Using custom logic to control the rx_bitslip_ctrl signal on a channel-by-channel basis, set up the word boundary.
You can reset the bit slip circuit at any time, independent of the PLL or DPA circuit operation. To reset the bit slip circuit, use the rx_bitslip_reset signal.
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