Doepfer

Thank you Dieter! I was hoping you would respond. This is a great help. 
-James

James Husted
Designer, Synthwerks LLC
www.synthwerks.com
james@synthwerks.com
synthwerks@me.com


On May 2, 2013, at 9:09 AM, yahoo@doepfer.de wrote:

> James,
> 
> this is the pin-out of the connectors that connect the A-154 to the A-155:
> 
> 1: A2
> 2: A1
> 3: A0
> 4: Clock
> 5+6: +12V
> 7+8: GND
> 9+10: -12V
> 
> This is the arrangement of the pin numbers:
> 
> 1  2
> 3  4
> 5  6
> 7  8
> 9  10
> 
> Pay attention that the address signals and the clock signal have high level
> (0/+12V) because they have to drive CMOS circuits with 12V supply.
> The "inhibit" signal is "A3". This signal is not available at the 10 pin
> connector. It's a socket at the front panel of the A-154 because the A-155
> has no inhibit input (one has to use external VC switches for sequences
> longer than 8 steps). The A-155 module was designed in 1997 and at this time
> it was planned as a stand-alone unit without the need of an inhibit signal.
> The A-154 was released many years later in 2004.
> 
> Best wishes
> Dieter Doepfer
> 
> 
>> -----Ursprungliche Nachricht-----
>> Von: Doepfer_a100@yahoogroups.com
>> [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von James Husted
>> Gesendet: Donnerstag, 2. Mai 2013 17:37
>> An: Doepfer_a100@yahoogroups.com
>> Betreff: [Doepfer_a100] decoding the bus on a A-154
>> 
>> 
>> I am thinking about making some modules and interfaces that will
>> connect to and expand from the A-154 Enhanced Sequential
>> controller module and need to know what is being transmitted on
>> the pins of the ribbon connector that plugs into the A-155. Since
>> the A-154 can drive more than one A-155 I assume more than just
>> the clock and 3 address lines shown on the block diagram are
>> being sent down the ribbon cable. I imagine a inhibit line is
>> there too. If anyone can supply me with a pinout of this
>> cable/header it would be much appreciated. I could
>> reverse-engineer the thing but I haven't gotten my A-154 yet.
>> 
>> I would like to make an interface that would allow controlling a
>> pair of our PGM-4x4 Programmer/Sequencers and some future
>> Synthwerks modules with a A-154. I would rather connect to the
>> A-154 than make a competing module to do the same thing.
>> -Thanks in advance!
>> 
>> James Husted
>> Designer, Synthwerks LLC
>> www.synthwerks.com
>> james@synthwerks.com
>> synthwerks@me.com
>> 
>> 
>> 
>> 
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