I am designing a board with the W5300 chip and I am having a hard time finding a crystal/oscillator that meets the specifications outlined in the data sheet. I would like to get a fairly robust clock source because these boards will see a fair amount of extended mechanically noising environment and would like the Ethernet to continue to function. So any recommendations would be great.
If I used an Oscillator (Part number recommendations?)
Oscillator question
I noticed that in order to use an oscillator I would need to connect it to XTLP and leave the XTLN floating. I noticed that it is recommended to use a 1.8V clock, is there a range that will work?
Also can I use the 1.8V power regulated from the W5300 chip or do I need a dedicated regulator?
I would prefer to drive the clock from my FPGA but it has a 3.3V output would this be in the functioning range?
@jefarro Did you get a good oscillator in the end. I am having trouble with our design currently.
I have tried the Abracon ASE3 1.8V Oscillator with ref schematic option 2 for internal Phy.
I assume the chip is not clocking, (although I am not sure how to tell?) because when I read any address I just get the MR default value 0xB800.
I can perhaps share parts of the design, but most of it is under NDA. Is there a private support email I can perhaps use rather than a public forum?
I prototyped with the WIZ830MJ module connected to a Nucleo-H743ZI board and based my design on the reference schematics for each; other than switching from a crystal (part number was not specified in any of the documents and I could not find a suitable crystal using a parametric search on digi-key, farnell, rscomponents etc. based on the details in your spec sheet). I used your option 2 in the ref schematics for an oscillator instead using the ASE3 mentioned previously and I can see the clock output on an oscilloscope, but the W5300 doesn’t seem to respond properly.