Said, I understand that the micros work fine, it just seemed like you would need a second one to discipline the OCXO because of the timing constraints on the divider.
This brings to mind the original "roll your own" Motorola GPS chipset that was released and killed quickly about 5-6 years ago. The concept was great. I was REALLY amazed that Motorola GPS convinced their ranks of lawyers to release the API...... The little "minor" problem was that the chipset ran a variation of the standard "Oncore" code that has been the basis for all Motorola receivers since the mid-nineties. This code requires servicing of a 1 KHz interrupt from the correlators in order to run. You can imagine how much fun people had trying to write user programs with that interrupt hitting them in the head 1000 times a second. I THINK green River was going to come up with some sort of RTOS to make life easier, but by that time there were cheaper, smaller alternatives. Randy ________________________________________________________________________ _____________________________ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Tuesday, August 08, 2006 5:03 PM To: [email protected] Subject: Re: [time-nuts] Frequency Dividers In a message dated 8/8/2006 14:29:38 Pacific Daylight Time, [EMAIL PROTECTED] writes: Hi Randy, the Micro's allow you to do other stuff, like discipline the OCXO as well :) BTW: I took a closer look at the Sparkfun board, the chip has a bunch more Match outputs than I thought. The Philips parts have great counters/PWM units (driven by an internal PLL) for experiments.. The MSP430 should do the trick as well. bye, Said Said, Thanks for the clue on the Philips part. Sounds like a nice solution. I just got a couple of sample parts from Maxim that I am going to play with (DS4000, MAX5121, and MAX6629). If they can do what Maxim claims it might be a fun experiment. I have one of those little TI MSP430 dev kits that I am going to try to use to run the show. We'll see. Randy _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
