Hi,
I am using an USB Hub in my PCB design. The Hub requires 3.3V & 1.2V power supplies, a reset & a 24MHz clock. I have given powers & reset to the IC. I am using an external crystal as the Hub has an internal crystal driver circuit. The powers & reset are proper but I am not getting the clock. Is the clock expected now or any other configurations needs to be done? The IC also has a PLLFILT (Phase Locked Loop filter capacitor) pin where an output voltage of 1.8V will come if the internal PLL circuit is configured. I am not getting this output also. Waiting for any kind of help...
With Regards,
Madhusoodana Bairy
I am using an USB Hub in my PCB design. The Hub requires 3.3V & 1.2V power supplies, a reset & a 24MHz clock. I have given powers & reset to the IC. I am using an external crystal as the Hub has an internal crystal driver circuit. The powers & reset are proper but I am not getting the clock. Is the clock expected now or any other configurations needs to be done? The IC also has a PLLFILT (Phase Locked Loop filter capacitor) pin where an output voltage of 1.8V will come if the internal PLL circuit is configured. I am not getting this output also. Waiting for any kind of help...
With Regards,
Madhusoodana Bairy