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General Description

The CS42L73 is a highly integrated, low-power, audio and telephony CODEC for portable applications such as smartphones and ultra mobile personal computers.

Product Overview

For the full datasheet, visit

www.cirrus.com/codec-datasheets/CS42L73-17

? Stereo ADC

? Dual Analog or Digital MIC Support

? Dual MIC Bias Generators

? Four DACs Coupled to Five Outputs

– Ground-Centered Stereo Headphone Amp.

– Ground-Centered Stereo Line Output

– Mono Ear Speaker Amplifier

– Mono 1 W Speakerphone Amplifier

– Mono Speakerphone Line Output for Stereo Speakerphone Expansion

? Three Serial Ports with Asynchronous Sample Rate Converters

? Digital Audio Mixing and Routing

System Features

? Native (no PLL required) Support for 6/12/24 MHz, 13/26 MHz, and 19.2/38.4 MHz Master Clock Rates in Add. to Typ. Audio Clock Rates

? Integrated High-efficiency Power Management Reduces Power Consumption

– Internal LDO Regulator to Reduce Internal Digital Operating Voltage to VL/2

– Step-down Charge Pump Provides Low Headphone/Line Out Supply Voltage

– Inverting Charge Pump Accommodates Low System Voltage by Providing Negative Rail for HP and Line Amp

? Flexible Speakerphone Amplifier Powering

– 3.00 V to 5.25 V Range

– Independent Cycling

? Power Down Management

– Individual Controls for ADCs, Dig. MIC Interface, MIC Bias Generators, Serial Ports, and Output Amplifiers & Associated DACs

? Programmable Thermal Overload Notification

? High-speed I2C? Control Port (400 kHz)

Applications

? Smart Phones, UMPCs, and MIDs