Ad1940/Ad1941 Device Description - Analog Devices EVAL-AD1940EB Manual

AD1940/AD1941 DEVICE DESCRIPTION

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The signal processing used in the AD1940/AD1941 is
comparable to that found in high end studio equipment. Most
of the processing is done in full, 56-bit double-precision mode,
resulting in very good, low level signal performance and the
absence of limit cycles or idle tones. The dynamics processor
uses a sophisticated, multiple-breakpoint algorithm often found
in high end broadcast compressors.
The AD1940/AD1941 are fully-programmable DSPs. Easy-to-use
software allows the user to graphically configure a custom signal
processing flow, using blocks such as biquad filters, dynamics
processors, and surround sound processors. An extensive control
port allows click-free parameter updates, along with readback
capability from any point in the algorithm flow.
The digital input and output ports of the AD1940/AD1941 allow
a glueless connection to ADCs and DACs by multiple, 2-channel
serial data streams or TDM data streams. When in TDM mode,
the AD1940/AD1941 can input 8 channels or 16 channels of
serial data, and can output either 8 channels or 16 channels of
serial data. The input and output port configurations can be set
individually. The AD1940 is controlled via a 4-wire SPI® port; the
AD1941 is controlled by a 2-wire I
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EVAL-AD1940EB/AD1941EB
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C bus.