Overview

STw4820

2/6

1

Overview

1.1

Power management for platform

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3 very low load/line transient step-down converters

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for core DSP, I/Os, peripherals, external memories, DDR, SRAM

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programmable from 0.8 up to 1.8 V

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800 mA current capability

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12.5 mV step for digital voltage frequency scaling

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6 LDOs

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for PLLs, processor permanent core, high-speed interface and peripherals

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1.2 V to 3.3 V with current capability up to 200 mA.

1.2

Audio

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Dual stereo codec

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DAC: dynamic range and SNR > 100 dB

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Multiple mixing capabilities and use case support

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Two TDM 4-channel interfaces (configurable in I2S and PCM)

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Switchable differential stereo inputs, line or microphone

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Two digital microphone inputs able to manage 4 digital microphones

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Differential microphone stereo inputs

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AB class headset capless stereo amplifier

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AB class earpiece differential amplifier

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D class loudspeaker stereo amplifier (2 x 1 W)

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D class vibrator differential amplifier

1.3

USB 2.O OTG interface

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High-speed (480 Mb/s), full-speed (12 Mb/s) and low-speed (1.5 Mb/s) OTG

transceiver

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UART mode

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ULPI interface

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VBUS charge pump can supply an external USB device (100 mA).