Lexicon
7-3
asserting the PS_ON/ signal. It does so on system software shutdown or when the STANDBY/POWER
switch is pressed.
DSPBUS Connectors (Sheet 8, 9)
Communication between DSP cards and the IO cards in the system are provided over a Lexicon proprietary
control and audio interface using a second set of PCI style connectors, J10-J13.
Passive termination networks (R015/R109/R110, R104/R107/R108, R106/R111/R112) are used on
TMIX_CKI, TMIX_CKI/2, TMIX_WCKI to maintain signal integrity (i.e. manage signal reflections and levels).
All serial audio data signals, TMIX1_SERD* and TMIX2_SERD* are pulled up by resistors, R13-R20, 127-
R140. The capacitors on these pages are for power supply decoupling and bypassing.
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