Messages in this thread | | | From | "Ulrich Windl" <> | Date | Fri, 1 May 1998 02:22:38 +0200 | Subject | Re: Problem with kernel-pll in 2.0.3x (at least) |
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On 1 May 98 at 0:10, J.S.Peatfield@damtp.cam.ac.uk wrote:
> *************** > *** 93,99 **** > #define FINEUSEC (1L << SHIFT_SCALE) /* 1 us in phase units */ > > #define MAXPHASE 512000L /* max phase error (us) */ > ! #define MAXFREQ (200L << SHIFT_USEC) /* max frequency error (ppm) */ > #define MAXTIME (200L << PPS_AVG) /* max PPS error (jitter) (200 us) */ > #define MINSEC 16L /* min interval between updates (s) */ > #define MAXSEC 1200L /* max interval between updates (s) */ > --- 94,100 ---- > #define FINEUSEC (1L << SHIFT_SCALE) /* 1 us in phase units */ > > #define MAXPHASE 512000L /* max phase error (us) */ > ! #define MAXFREQ ((HZ * 2L) << SHIFT_USEC) /* max frequency error (ppm) */
While working, you are saying: "the higher HZ, the more inaccurate the clock". This is generally not true. Think of MS-DOS, where HZ = 18.2 ;-)
Ulrich
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