Audio Precision APx555, Installation Instructions And Specifications

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APx DSIO Module for B Series: Specifications 55
DSI
O
DSIO digital serial input/output module
specifications
with APx500 v5.0 or higher measurement software
as fitted in APx517, 52x, 555, and 58x B Series audio analyzers
NP0020.00034 rev 001
March, 2020
This illustration shows an APx DSIO module, model 237.
These specifications cover the digital serial input and output functions of the Audio Precision
DSIO. The DSIO is available as a stand-alone module (model 237).
The Digital Serial Input/Output (or DSIO) option provides a flexible chip- or board-level
serial input and output interface. With separate Master Clock, Bit Clock, Frame Clock, Chan-
nel
Clock and four Data lines, variable signal formats, variable word width, bit depth and syn-
chronization options, the DSIO can address almost any serial interface need.
Formats include TDM, I
2
S, DSP (bit-wide pulse) and custom formats. Up to 16 channels can
be transmitted and received using the TDM format.
DSIO specifications begin on the next page.