search

etherkit / Si5351Arduino

Library for the Si5351 clock generator IC in the Arduino environment
GNU General Public License v3.0
233 stars 95 forks source link

what is the default drive strength at startup? #42

Closed amunters closed 7 years ago

amunters commented 7 years ago

Not an issue, but just a few questions:

It is possible to set the drive strength, for example to 4mA: si5351.drive_strength(SI5351_CLK0, SI5351_DRIVE_4MA);

Questions:

  1. What is the default drive strength at startup condition? (what is de drive strength when the command si5351.drive_strength() is never issued at all)?
  2. What parameter values for drive strength are accepted?

Allard PE1NWL

NT7S commented 7 years ago

As stated in application note AN619, the default value of that register is 00, which corresponds to 2 mA. This library doesn't change that upon initialization.

The drive level enumeration values are listed in this section of the documentation: https://github.com/etherkit/Si5351Arduino#tokens

amunters commented 7 years ago

Thanks Jason! All understood now. Perhaps it would be a good idea to add this to the section "Startup Conditions" in the README.md? Thanks for this great library! 73, Allard PE1NWL

NT7S commented 7 years ago

Yes, I've already put it in the README in the next release, thank you.