CDCI6214: Related register setting for 100khz output

Hi Michael,

You can use the simple frequency calculator in Ticspro. Enter the target output frequency and click the button. You can choose another VCO frequency if needed.

Regards,
Hao

Hi Michael,

Sorry for the delay. Please find my comments below:

1. You can use a XTAL as reference. The XTAL should go to SECREF. Unused input can be left floating.

2. You can, but there's certain limitations. In general you have to make sure that a common multiple of any two output frequencies is within the VCO frequency range. For example, a common multiple of 156.25 MHz and 100 MHz is 2.5 GHz, which is within the VCO frequency range (2.4 to 2.6 GHz for this device. It can be found in the datasheet). Therefore these two frequencies can be generated at the same time.

3. We don't have a device that supports as low as 100 kHz and has individual OE. CDCDB800 has individual OE but frequency range is limited.

4. You can find the XTAL recommendations in this appnote: https://www.ti.com/lit/an/snaa331/snaa331.pdf?ts=1656345518881&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FCDCE6214-Q1

5. There's not much information shown on this schematic snippet, but at least this portion looks fine.

Regards,
Hao