Tool/software:
MSE/SNR can be determined via Reg 0x225. Please note that this is an extended register and needs 4-step extended register access to read appropriate values.
Once the hex value is obtained, convert to decimal and compare against MSE.
The levels for SNR would be:
SNR > 22dB = MSE < 410 (excellent link)
19.5 < SNR < 22 = 410 < MSE < 750 (good link)
SNR < 19.5 = MSE > 750 (poor link)