AnsweredAssumed Answered

CEC pin on the ADV7511

Question asked by HankZ on Sep 4, 2012
Latest reply on Sep 7, 2012 by DaveD

Looking at the ADV7511 hardware users manual the CEC pin has a  diode/resistor

pullup where the diode max leakage current is specified.  I  am connecting to

TPD12S016  esd protection chip, which does not have a  diode shown on the phy

side CEC pin.  I need to know why that diode is  shown in the circuit, possibly

just protection from 5V CEC drive from device on  other end of cable?  In that

case the TPD12S016 will drive only 3.3V (that  is my VCCA voltage) to the phy

and its internal pullup will work properly  without diode.