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NeXT 15-pin D DSP connector

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> We have an Ariel D-MN digital microphone that interfaces to the NeXT
> Station and Next Cube via the 15-pin "D" DSP connector.  We'd like to
> know what signals are on what pins.  Might someone point us to that
> info?
I'm sure this is online somehere, but I happen to have The NeXT Book
out right now, so here it is:

Pins:

  8  7  6  5  4  3  2  1
   15 14 13 12 11 10  9


1  SCK
2  SRD
3  STD
4  SCLK
5  RXD
6  TXD
7  +12v
8  -12v
9  GND
10 GND
11 GND
12 SC2
13 SC1
14 RESERVED
15 GND

SCK:  Serial clock signal (synchronous)
SRD:  Serial receive data (sync.)
STD:  Serial transmit data (sync.)
SCLK: Serial clock signal (asynchronous)
RXD:  Receive data (async.)
TXD:  Transmit data (async.)
SC1, SC2:   Serial control pins
+12v, -12v: Power for external use
GND:  Ground

See Also