STM32U5A5QJI datasheet(73/382 Pages) STMICROELECTRONICS

73 / 382 page

DS13543 Rev 1

73/382

STM32U5Axxx

Functional overview

•

Two common clock input/output for Σ∆ modulators

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Flexible BSMX for connection between filters and digital inputs

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Two inputs to connect the internal ADCs

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Six flexible digital filter paths, including:

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A configurable CIC filter:

- Can be split into two CIC filters: high-resolution filter and out-off limit detector

- Can be configured in Sinc4 filter

- Can be configured in Sinc5 filter

- Adjustable decimation ratio

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A reshape filter to improve the out-off band rejection and in-band ripple

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A high-pass filter to cancel the DC offset

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An offset error cancellation

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Gain control

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Saturation blocks

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An out-off limit detector

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Short-circuit detector

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Clock absence detector

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16- or 24-bit signed output data resolution

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Continuous or single conversion

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Possibility to delay independently each bitstream

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Various trigger possibilities

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Break generation on out-of limit or short-circuit detector events

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Autonomous functionality in Stop modes

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DMA can be used to read the conversion data

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Interrupts services

3.36.2

Audio digital filter (ADF)

The ADF is a high-performance module dedicated to the connection of external Σ∆

modulators. It is mainly targeted for the following applications:

•

audio capture signals

•

metering

The ADF features one digital serial interface (SITF0) and one digital filter (DFLT0) with

flexible digital processing options to offer up to 24-bit final resolution.

The DLFT0 of the ADF is a subset of the digital filters included into the MDF.

The ADF serial interface supports several standards allowing the connection of various Σ∆

modulator sensors:

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SPI interface

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Manchester coded 1-wire interface

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PDM interface

A flexible BSMX allows the connection of any incoming bitstream to any filter.

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