Tool/software:
The console has a black screen. The check shows that the EQ (0x3b) value of the ds90ub948 is 0x04, and the normal display shows that the EQ (0x3b) value is 0. The configuration of other functions is the same as the normal configuration, The link status is also normal. Ask, what is the range of EQ value in normal operation?
Hello,
1. It is found in the datasheet of the ds90ub948 that the EQ value can be fixed. How to determine the appropriate EQ value of the ds90ub948 based on the ds90ub947 and ds90ub948 systems?
TI recommends not to change the default settings of the AEQ. The default allows automatic adaption
2. How to determine whether the EQ value is overcompensated when using AEQ
MAP tool in ALP can be used to characterize link margin.
DS90UB948-Q1 ALP profile has MAP tool which could be used to run the link margin test.
Here is an Application Note.
Regards,
Fadi A.
