[sdiy] MIDI & DIN Sync in the same connector?

[Antonio Tuzzi]

i have a cr8000 with midi and din sync
in the same socket

Inviato da iPhone

Il giorno 23/mag/2012, alle ore 00:12, Adam Inglis <21pointy at tpg.com.au> ha scritto:

> 
> MIDI and DIN sync are combined in this set-up that can drive a modified TB303
> http://www.firstpr.com.au/rwi/dfish/sync-lead/
> 
> Adam
> 
> On 23/05/2012, at 5:41 AM, Mattias Rickardsson wrote:
> 
>> MIDI and DIN sync (in its simplest form, with just clock and
>> start/stop signal) use different pins in the same connector. The
>> possibility of supporting both MIDI and DIN sync in the same
>> connectors have crossed my mind often during the years, but I can't
>> remember seeing any products using it - apart from Dutch
>> Engineers at work, who seem to have combined MIDI and DIN sync connectors
>> on a couple of their products:
>> 
>> Their 1-to-4 "Midi Thru Box" can also be used as a DIN sync thru box
>> (presumably just passively connected),
>> http://www.engineersatwork.nl/dtronics/pages/midi_sync_thru_box.html
>> and their "Midi to Sync converter" seems to send DIN sync signals and
>> MIDI timing signals simultaneously on the same connector (presumably
>> driven by the same clock pulses, since MIDI timing messages are just
>> positive pulses with the same frequency as DIN sync, IIRC).
>> http://www.engineersatwork.nl/dtronics/pages/midi_sync_converter_ms06.html
>> 
>> Are any other products using combined connectors in similar ways?
>> 
>> I don't see any electrical reason why DIN sync OUT wouldn't be
>> suitable to incorporate in every MIDI OUT and MIDI THRU connector
>> (provided that the correct DIN sync signals are generated internally
>> of course). Are there any reasons not to do it?
>> 
>> Combining MIDI IN and DIN sync IN is a bit trickier, especially since
>> MIDI needs to be galvanically disconnected and since there might be
>> exotic "tap", "fill in" or "reset and start" DIN sync data on the
>> incoming MIDI pins, but it should be quite possible as well. :-)
>> 
>> /mr
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