TIDUF29 October 2023
This procedure specifically explains how to measure a TX output eye of 26.5625GBd PAM-4 PRBS13Q data passing through retimer U15 channel 2 on the TIDA-060043 MCB board.
setup.py
. Make sure setupInfo = 0 and
devIdentifier = 1.devinit.py
.
Make sure device.slaveAddr = 0x18 on line 79 as this address corresponds
to retimer U15 on TIDA-060043.1_bringupParams.py
for 26.5625GBd PAM-4 data enabled on
Q0CH2. Run 1_bringupParams.py
.2_bringupLib.py
. Run the "READBACK CHANNEL INIT STATUS /
LOCK STATUS" code block of usefulFunctions.py
and confirm
channel 2 has CDR lock.usefulFunctions.py
, tune the FFE taps while visually
inspecting the output eye to optimize performance. For the results shown in
Figure 3-3, settings of pre=2 and post=4 were used.