Dear all,
Would you teach the spec. of the crystal oscillator(32KHz and 24MHz) which i.MX6 needs?
For 24MHz xtal,
I referred to the following URL.
https://community.freescale.com/message/337037#337037
Here, it argues about CL, ESR, etc.
However, It does not argue about the following spec.
- Tolerance
- Temperature Stability
- Operating Temperature
Would you teach about such spec.?
For 32KHz xtal,
I was not able to find the spec. about a 32-kHz crystal oscillator.
Would you teach about the above-mentioned spec.?
May I have advice?
Best Regards,
Solved! Go to Solution.
Hi yuuki
had you looked at IMX6DQ6SDLHDG
Table 2-20. 24 MHz crystal tolerance guidelines ?
It is named as "24 MHz crystal" - so these tolerances are
for "crystal oscillator connected to XTALI and XTALO".
So if you are using Ethernet - then for it 50ppm - 24 MHz oscillator tolerance.
Best regards
chip
Hi yuuki
summary (Tolerance + - Temperature Stability) are defined
in sect.2.7 "Oscillator tolerance"
IMX6DQ6SDLHDG IMX6DQ6SDLHDG, Hardware Development Guide
For 32KHz there are no such strict requirements, one can follow
for example Table 9 "Recommended External Crystal Specifications"
IMX25AEC i.MX25 Datasheet
Operating Temperature is defined by final product specifications.
Best regards
chip
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Dear Chipexpert-san,
Thank you for your support.
For 24MHz,
I referred to IMX6DQ6SDLHDG.
However, I was not able to find the description about the crystal oscillator connected to XTALI and XTALO of iMX6.
Can Tolerance=+-500ppm be used for XTALI and XTALO of iMX6?
Or, Is it necessary to fill the spec. indicated to Table9 of IMX25AEC?
Best Regards,
Hi yuuki
had you looked at IMX6DQ6SDLHDG
Table 2-20. 24 MHz crystal tolerance guidelines ?
It is named as "24 MHz crystal" - so these tolerances are
for "crystal oscillator connected to XTALI and XTALO".
So if you are using Ethernet - then for it 50ppm - 24 MHz oscillator tolerance.
Best regards
chip