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resources:fpga:peripherals:jesd204:jesd204_troubleshooting [20 Dec 2021 08:09]
Laszlo Nagy [Link status stays in CGS and SYNC~ de-asserts, subclass 1]
resources:fpga:peripherals:jesd204:jesd204_troubleshooting [20 Dec 2021 08:19]
Laszlo Nagy [Link status stays in CGS and SYNC~ is de-asserts]
Line 129: Line 129:
 ---- ----
  
-====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