[hpsdr] si570

[Richard Faust]

The Softrock group buy parts are SI570CAC000141DG [CMOS spec 10 - 160MHz] and SI570BBC000141DG [LVDS spec 10 - 215MHz].  Anyone really planning to use the Si570 at 1126MZ should set up a SI570BBAxxxxxxDG at 1126MHz those 'A' parts are spec at 10-945MHz,  970 - 1134, and 1213 - 1417.5MHz.  Silicon Labs will send out 2 free samples in about 3 weeks time.  The Softrock parts will function but may not meet all noise and drift specs.  Also see US Patent US7288998 for info beyond the datasheets.If anyone is interested in calculators for the setup values in the Softrock parts I have several files in VB6 and Excel-VBA in the Yahoo Groups file sectionhttp://groups.yahoo.com/group/softrock40/files/K9IVB-Si570/All of these files have N1 = 1 disabled for code simplicity, thus will not handle frequencies above about 440 MHz.  If there is any interest I could add the code to one or more programs - or just use the Silicon Labs 570EVB software. 73, Dick K9IVB> From: phil at pharman.org> To: johan.maas at hetnet.nl> Date: Wed, 2 Jul 2008 20:22:07 +0800> CC: hpsdr at lists.hpsdr.org> Subject: Re: [hpsdr] si570> > ***** High Performance Software Defined Radio Discussion List *****> > I've been using Bill's code to set up the Si570 2nd Local Oscillator > (1126MHz) on Cyclops from Ozy. It works fine and I just call his > Ozy-Si570.exe file within the initozy11.bat like this:> > Ozy-Si570 1126> > A really neat way of controlling the Si570 via the I2C faciltiy on > Ozy/Atlas.> > 73's Phil...VK6APH> > > > ----- Original Message ----- > From: 'Bill Tracey' <bill at ewjt.com>> To: 'Johan Maas' <johan.maas at hetnet.nl>> Cc: <hpsdr at lists.hpsdr.org>> Sent: Wednesday, July 02, 2008 10:34 AM> Subject: Re: [hpsdr] si570> > > > ***** High Performance Software Defined Radio Discussion List *****> >> > Hello Johan,> >> > The code in> > SVN> > (svn://206.216.146.154/svn/repos_sdr_hpsdr/trunk/KD5TFD/Ozy-Si570) is> > just a quick and dirty command line program to send I2C commands out> > Ozy's I2C bus to control one of the Si570's the SoftRock guys did a> > group buy on. I don't have any plan to do a board for this - I just> > dead bugged it on to an existing experimenter board I had on my Atlas bus.> >> > The code's under the GPL so feel free to use it under those terms.> >> > Regards,> >> > Bill (kd5tfd)> >> > At 11:14 AM 7/1/2008, you wrote:> >>Hi Bill,> >>> >>I saw in svn a si570 project.> >>> >>Are you planning to create a si570 board controlled via ozy?> >>> >>Can you give me an update?> >>> >>73 Johan PA3GSB> >>> >>No virus found in this outgoing message.> >>Checked by AVG.> >>Version: 8.0.101 / Virus Database: 270.4.3/1528 - Release Date: 1-7-2008 > >>7:26> >> >> > _______________________________________________> > HPSDR Discussion List> > To post msg: hpsdr at hpsdr.org> > Subscription help: http://lists.hpsdr.org/listinfo.cgi/hpsdr-hpsdr.org> > HPSDR web page: http://hpsdr.org> > Archives: http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/> > > --------------------------------------------------------------------------------> > > > No virus found in this incoming message.> Checked by AVG.> Version: 8.0.101 / Virus Database: 270.4.3/1528 - Release Date: 7/1/2008 > 7:26 AM> > _______________________________________________> HPSDR Discussion List> To post msg: hpsdr at hpsdr.org> Subscription help: http://lists.hpsdr.org/listinfo.cgi/hpsdr-hpsdr.org> HPSDR web page: http://hpsdr.org> Archives: http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/
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