Re: Rosetta progress report WAS: translator question

["BruceR" <br@xxxxxxxxxxxxxxxx>]

Sounds excellent! BTW, I received and email from smartproducts
announcing their Zwave/X10 translator today:
 http://www.smartproducts.us/Zwave.htm  scroll down.

From:Dave Houston
nobody@xxxxxxxxxxxx

> I have a circuit board layout that I think will work. I'll stare at
> it for a few more days. I usually find that causes traces and solder
> pads to move around mysteriously ending up in locations where I don't
> recall placing them. I'll send it off this weekend and should have it
> about 2-3 weeks after that. In the meantime I can start on the code
> using a BX24-AHT board
>
> Mouser does not stock any through hole RTC chips so I will use SMT
> and will forget about using any of the supported serial devices for
> the RTC backup. This will save a bit of code since there will only be
> the one chip to interface with. I'll leave the choice of
> supercapacitor to the user. Mouser stocks 3 that will fit the space
> I've alloted. They will provide anywhere from 2-3 days to more than a
> month backup for the RTC chip.
>
> I've settled on I²C for the RTC chip and will use the ZX-24's
> hardware I²C implementation which can run at 410kHz. The I²C bus can
> support another EEPROM chip should it prove necessary to increase the
> space for user data.
>
> To use Rosetta with any of the controllers that normally use a TW523
> (or PL513), the newly liberated TW523 (or PL513) will need to be
> attached to the other TTL port in order to supply a ZC signal for
> Rosetta and the controller (e.g. HAI, JDS, Ocelot). The controller,
> Rosetta and TW523 (or PL513) will share the ZC signal. I think the
> ZX-24 will be fast enough to have the controller receive pin follow
> the ZX-24 receive pin which will be listening to the TW523. This way,
> there will be no delay in the controller receiving what's on the
> powerline (or at least what the TW523 is willing to divulge on that
> topic). When the controller transmits, there will be a delay as
> Rosetta will need to see a complete code before deciding if it needs
> translation or merely needs to be sent to the powerline via the TW523
> (or PL513). This should allow for sending/receiving a mixture of
> X-10, UPB and 2414S powerline commands
>
> Rosetta will also be able to program delays (~2ms minimum, infinite
> maximum resolution) as needed between signals it sends to the
> powerline.