For an external clock source, please clarify if the TLK100 Ethernet PHY really needs a "nominal voltage of 1.8V" as stated in the datasheet (see page 36 of datasheet).
I believe it should be 3.3V nominal.
Also, a very similar part (TLK110) states "a nominal voltage of 3.3V" in that datasheet (see page 40), which would correspond to CMOS voltage levels I would expect in a single power supply design using either part.
This is a big design difference, so please advise ASAP.
Can someone please advise on this.
for the TLK100 ethernet PHY the Data sheet is correct .The amplitude of the oscillator should be a nominal voltage of 1.8V
you can use the internal oscillator with an external crystal (and so avoid using external oscillator with 1.8v).
for the TLK110 ethernet PHY the Data sheet is also correct .The amplitude of the oscillator should be a nominal voltage of 3.3V
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.