-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Somebody in the thread at some point said: | On Mon, 21 Jul 2008 02:11:38 +0200, Andy Green <[EMAIL PROTECTED]> wrote: | |> Just a heads-up there is also another relevant patch on stable tonight. |> ~ It gives another interesting knob to twiddle about GPS performance. |> |> http://git.openmoko.org/?p=kernel.git;a=commitdiff;h=1d04b142ffeaa15129f046751f1366b0f0614f47 | | What does “strength” mean in this context? Voltage?
No, it will refer to the amount of current allowed to the drive the output transistors in the Glamo's SD-related IO cells. If they are starved of current, it affects the rise and fall time of the output, it is the sharpness of the edges that creates the higher frequency energy that makes trouble at 1.5GHz we suspect. Running at strength 0 worked fine here on the SD Card we ship and should significantly affect those high harmonics. I eyeballed the clock signal that results and it's not so degraded. Basically stopping the clock when idle attacks it the bulk of the time when we don't talk to the device and the strength setting attacks it even when we are talking to the SD Card. - -Andy -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iEYEARECAAYFAkiEPCYACgkQOjLpvpq7dMoPJQCdFrzIBw19ilHUDH595cfjGEqU WD4AnA0XBJT3W3bpq72gdtVcBjgcZTfH =Eplk -----END PGP SIGNATURE----- _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
