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--- resources:fpga:peripherals:jesd204:jesd204_troubleshooting [22 Apr 2021 08:36] – [Link is DISABLED, In Linux boot log following appears: axi-adxcvr-tx: QPLL: failed to find setting for lane rate ...] Laszlo Nagy
+++ resources:fpga:peripherals:jesd204:jesd204_troubleshooting [20 Dec 2021 08:19] (current) – [Link status stays in CGS and SYNC~ is de-asserts] Laszlo Nagy
@@ Line 129: / Line 129: @@
 ----
-====Link status stays in CGS and SYNC~ de-asserts, subclass 1====
+====Link status stays in CGS and SYNC~ is deasserted====
 <WRAP center round box 100%>
-**Cause:**  Missing SYSREF at peripheral
+**Cause:**  SYNC~ signal not connected correctly, pulled high
 **Identify:**
@@ Line 138: / Line 138: @@
 #grep "" /sys/bus/platform/devices/*.axi-jesd*/status*
   Link status: CGS
-  SYSREF captured         No
+  SYNC~: deasserted
-**Fix:** Make sure SYSREF 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 center round box 100%>
+**Cause:**  Missing SYSREF at peripheral in subclass 1
+**Identify:**
+#jesd_status
+or
+#grep "" /sys/bus/platform/devices/*.axi-jesd*/status*
+  Link status: CGS
+  SYNC~: deasserted
+  SYSREF captured         No
+**Fix:** Make sure SYSREF is connected to the Link Transmit peripheral and is properly driven.
 </WRAP>

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