STA321MPL1 datasheet(1/80 Pages) STMICROELECTRONICS

部件名	STA321MPL1

功能描述	Scalable digital microphone processor

PDF	80 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 80 page

This is information on a product in full production.

June 2016

DocID029389 Rev 1

1/80

STA321MPL1

Scalable digital microphone processor

Datasheet

- production data

Features

• 8 digital processing channels each 24-bits

– 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

• Gaming

• Audio conference sets

• Legacy microphone-equipped devices

Description

The STA321MPL1 is a PDM, high-performance,

multichannel processor with ultra-low quiescent

current. It is 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 the

microphone processing to be offloaded from the

main CPU or SoC to the device.

The STA321MPL1 has six digital microphone

inputs, providing connections for up to three dual-

membrane microphones.

Table 1. Device summary

Order code

Package

Packaging

STA321MPL1TR

TQFP64

Tape and reel

www.st.com

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制造商	部件名	数据表	功能描述
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