AN 539: Test Methodology of Error Detection and Recovery using CRC in Intel FPGA Devices

ID 683075
Date 8/09/2019
Public
Document Table of Contents

1.3.1.5. User Logic Control Block Signals

Table 5.  User Logic Control Block Signals
Signal Name Input/ Output Description
clk_in Input Clock source to the user logic control block.
Start_write Input This input triggers the user logic control block to start driving the SHIFTnLD and ED_CLK output signals. When this input is high, the user logic control block starts to run the mechanism to unload the user update register. This input is usually tied to the crcerror output port from the WYSIWYG atom because the EMR is unloaded at the rising edge of the crcerror port.
SHIFTnLD Output Output to the WYSIWYG atom. Use this signal to drive the shiftnld port of the WYSIWYG atom.
ED_CLK Output Output clock to the WYSIWYG atom. Use this clock as the clock source for the WYSIWYG atom. This clock is connected to the clk port of the WYSIWYG atom. The source of this clock comes from the clk_in input signal.