Netra芯片计算DDR3线路补偿值时，计算值不能收敛，提示：
===== Searching =====
RD DQS GATE RATIO MAXIMUM VALUE DIDN'T CONVERGE
RD DQS GATE RATIO MINIMUM VALUE DIDN'T CONVERGE
===== Searching RD DQS ===== RD DQS RATIO MAXIMUM VALUE DIDN'T CONVERGE
RD DQS RATIO MINIMUM DIDN'T CONVERGE
===== Searching WR DQS =====
WR DQS RATIO MAXIMUM VALUE DIDN'T CONVERGE
WR DQS RATIO MINIMUM VALUE DIDN'T CONVERGE
===== END OF TEST =====
请问什么原因可能导致此问题，谢谢
