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STA321MP 数据表(PDF) 1 Page - STMicroelectronics

部件名 STA321MP
功能描述  Scalable digital microphone processor
Download  50 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STA321MP 数据表(HTML) 1 Page - STMicroelectronics

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February 2012
Doc ID 022647 Rev 1
1/50
1
STA321MP
Scalable digital microphone processor
Features
8 digital processing channels each 24-bit
– 6 channels of PDM input
– 2 additional virtual channels
>100 dB SNR and dynamic range
Digital gain/attenuation +58 dB to -100 dB in
0.5 dB steps
Soft volume update
Individual channel and master level control
Up to 10 independent 32-bit user-
programmable biquads (EQ) per channel
Bass/treble tone control
Pre- and post-EQ full 8-channel input mix on all
8 channels
Dual independent limiters/compressors
Dynamic range compression or anti-clipping
modes
Individual channel and master soft/hard mute
3 I2S data outputs
I2S data output channel mapping function
Independent channel volume and DSP bypass
Channel mapping of any input to any
processing channel
Applications
Tablets
Smartphones
Gaming
Audio conference sets
Legacy microphone-equipped devices
Description
The STA321MP is a PDM high-performance
multichannel processor with ultra-low quiescent
current designed for general-purpose digital
microphone applications. The device is fully digital
and is comprised of three main sections. The first
section is the PDM input interface which can
accept up to six serial digital inputs. The second
section is a high-quality audio processor allowing
flexible channel mixing/muxing and provides up to
10 biquads for general sound equalization and
voice enhancement with independent volume
control. The last block is the I2S output interface
which streams out the processed digital audio.
The output interface can also be programmed for
flexible channel mapping. The device offers some
of the most commonly required audio
enhancements such as programmable voice
tuning and equalization, limiter/compressor for
improved voice quality, multiband selection for
customizable microphone usage and configurable
wind-noise rejection. The embedded digital
processor allows offloading the microphone
processing from the main CPU or SoC, moving it
to the device.
Table 1.
Device summary
Order code
Package
Packing
STA321MPL
TQFP64
Tube
STA321MP
VFQFPN56
Tube
TQFP - 64
10 mm x 10 mm
VFQFPN - 56
8 mm x 8 mm
www.st.com


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