while answer please consider also the case JTAG is not connected and signals need external PU/PD.
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
while answer please consider also the case JTAG is not connected and signals need external PU/PD.
Erez,
When the JTAG driver is not connected, external pull-up and pull-down resistors will be needed but only on one side of the mux: either S1-4A/B, or on the output D1-D4. The integrated pull-down resistors are only built into the control logic pins, not the signal path, and since the JTAG driver is disconnected, pull-ups will be needed on the signal path because the push-pull architecture of the driver is not present.
Hope this helps,
Regards,
Tyler