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resources:fpga:peripherals:jesd204:jesd204_troubleshooting [20 Dec 2021 08:09] – [Link status stays in CGS and SYNC~ de-asserts, subclass 1] Laszlo Nagyresources:fpga:peripherals:jesd204:jesd204_troubleshooting [20 Dec 2021 08:19] (current) – [Link status stays in CGS and SYNC~ is de-asserts] Laszlo Nagy
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 ---- ----
  
-====Link status stays in CGS and SYNC~ is de-asserts====+====Link status stays in CGS and SYNC~ is deasserted====
 <WRAP center round box 100%> <WRAP center round box 100%>
 **Cause:**  SYNC~ signal not connected correctly, pulled high **Cause:**  SYNC~ signal not connected correctly, pulled high
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   SYNC~: deasserted   SYNC~: deasserted
  
-**Fix:** Make sure SYNC~ is connected to the Link Transmit peripheral and is property driven.+**Fix:** Make sure SYNC~ is connected to the Link Transmit peripheral and is properly driven
 +</WRAP> 
 + 
 +<WRAP center round box 100%> 
 +**Cause:**  Receive endpoint of the JESD link is not up 
 + 
 +**Identify:**   
 +#jesd_status 
 +or 
 +#grep "" /sys/bus/platform/devices/*.axi-jesd*/status* 
 +  Link status: CGS 
 +  SYNC~: deasserted 
 + 
 +**Fix:** Make sure software communicates correctly with the DAC, bring-up sequence was executed and JESD RX blocks configured and enabled.
 </WRAP> </WRAP>
  
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 #grep "" /sys/bus/platform/devices/*.axi-jesd*/status* #grep "" /sys/bus/platform/devices/*.axi-jesd*/status*
   Link status: CGS   Link status: CGS
-  SYSREF captured         No +  SYNC~: deasserted 
 +  SYSREF captured         No
  
-**Fix:** Make sure SYSREF is connected to the Link Transmit peripheral and is property driven.+**Fix:** Make sure SYSREF is connected to the Link Transmit peripheral and is properly driven.
 </WRAP> </WRAP>
  
resources/fpga/peripherals/jesd204/jesd204_troubleshooting.txt · Last modified: 20 Dec 2021 08:19 by Laszlo Nagy