MGT CLK overdrive - Githubissues

elhep / AFCZ

AMC FMC Carrier board based on ZYNQ Ultra Scale + SoC

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MGT CLK overdrive #156

Open gkasprow opened 3 years ago

gkasprow commented 3 years ago

MGTs are driven from The IDT clock crossbar; they get a 1.5V (3V diff) voltage which is higher than the MGT quad supply. IDT can have the output termination enabled which partially solves the issue. but there should be a resistor at the output which reduces the swing.

filipswit commented 10 months ago

Would it be fine to place ~200R 0201 resistors instead of a pair of jumper capacitors, since we have 2 pairs on each line?