In SX Microcontrollers, SX/B Compiler and SX-Key Tool, lawlopez wrote:

Oh, I don't know.

1.  The Murata resonator data sheet shows exactly
two 3 pin resonators.  The first one has caps.
The second one does.  Neither has a specified
feedback resistor so I would expect there isn't one.

2.  The oscillator for the ubicom SX does not
document exactly what the chip is actually doing for different
settings.  It does document what feed back resistors
and caps are needed for various resonators.


My expectation is:

the 4MHz resonator needs a feedback resistor.
The 50 MHz resonator needs a feedback resistor and
some caps.

yeah, they work without that but the data sheet for
the SX 28 processor says put them in.

Now, in light of these comments are you still of the
belief that I need extra parts ?

Thank you very much.

---------- End of Message ----------


You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=89903#m89919

Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com

The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2005 (http://www.dotNetBB.com)