Ed, Not 100% sure this is the same model, but it would seem to indicate there's a PPS signal on the DCD pin (from the gpsd-users list circa 2007): http://marc.info/?l=gpsd-users&m=118340900010559&w=2
Have a 'scope to check what that pin looks like? -Ryan Stasel > On Dec 21, 2014, at 23:07 , ed breya <e...@telight.com> wrote: > > One thing I want to clarify - it is not a Jupiter GPS module - it just uses > the chipset, presumably hooked up as in the application info. The board is > proprietary, and there seems to be no standard electrical or operational > interface as would be expected in an OEM GPS module. So, the only way to > figure it out is to go by the chip details to see how it's supposed to work. > > previous message: > > I peeled open the shield can without too much deformation, so it can be > restored. I found that it's a single board, with the DSP on one side, and the > RF section on the other. It is a Rockwell chipset, with 11577-11 DSP, and > 6732-13 RF. On searching I found that this seems to be called their Jupiter > GPS from circa late 1990s - I found quite a lot of info at the module level, > but not for the actual ICs, like pinout data. The set includes all the usual > GPS stuff including 1 PPS, and is capable of several levels of on-ness. So, > if the uP that makes it a DeLorme merely sets some control lines to activate > it, then I should be able to override them to force it always on - if I can > figure them out. If instead the uP programs something internal to the DSP to > control power states, then fuggetabout it - it will be junk. > > So, does anyone know of the Jupiter chipset, and where to find chip-level > info for these parts? > > Ed > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
