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These mezzanine boards for the VME6U6
or VME9U12 provide two
additional Lucent DSP32Cs clocked at 74MHz rate. Each DSP
has 512k bytes of private zero wait-state SRAM and its
own Analog Devices AD1848 high quality stereo codec. The
DSP32Cs may be used for pre- or post-processing of audio
data or for additional number crunching. They are fully
compatible with the TDM subsystem and can communicate
with the other DSP32Cs on the VME6U6 or VME9U12. The
analog section features resolution and compression modes
of 16-bit linear, 8-bit linear, 8-bit µ-law compression
(13-bit resolution) and 8-bit A-law (12-bit resolution)
and sample rates of 8, 9.6, 16, 27.4, 32, and 48kHz.
These modes as well as input gains and output
attenuations are programmable under DSP32C
control.Balanced input and output analog signals are
brought out on a 40-pin ribbon cable connector. These
connectors are compatible with our patch panels. Frequency
response is 20 Hz to 20k Hz (+/-1 dB). Dynamic range is
85 dB (using 16-bit linear resolution) with full scale
input voltage of 5.6 Vpp and full scale output voltage of
4.0 Vpp. Total harmonic distortion is 0.02% input and
0.022% output.
6UAUX2 mezzanine board.
| THD+N |
-67.3db
@ 1.45v rms. input
32kHz sampling rate
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| MTBF |
6UAUX2:
9UAUX2: |
271,000 hrs
272,000 hrs
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