WM9714L_06 WOLFSON [Wolfson Microelectronics plc], WM9714L_06 Datasheet

WM9714L_06

Manufacturer Part Number

WM9714L_06

Description

AC 97 Audio CODEC

Manufacturer

WOLFSON [Wolfson Microelectronics plc]

Datasheet

1.WM9714L_06.pdf (94 pages)

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DESCRIPTION

The WM9714L is a highly integrated input/output device

designed for mobile computing and communications.

The chip is architected for dual CODEC operation, supporting

Hi-Fi stereo Codec functions via the AC link interface, and

additionally supporting voice Codec functions via a PCM type

Synchronous Serial Port (SSP). A third, auxiliary DAC is

provided which may be used to support generation of

supervisory tones, or ring-tones at different sample rates to the

main codec.

The

microphones, stereo headphones and a stereo speaker,

reducing total component count in the system. Cap-less

connections to the headphones, speakers, and earpiece may be

used, saving cost and board area. Additionally, multiple analog

input and output pins are provided for seamless integration with

analog connected wireless communication devices.

All device functions are accessed and controlled through a

single AC-Link interface compliant with the AC’97 standard.

The 24.576 MHz masterclock can be input directly or generated

internally from a 13MHz (or other frequency) clock by an on-chip

PLL.

2.048MHz to 78.6MHz.

The WM9714L operates at supply voltages from 1.8V to 3.6V.

Each section of the chip can be powered down under software

control to save power. The device is available in a small

leadless 7x7mm QFN package, ideal for use in hand-held

portable systems.

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device

The PLL supports a wide range of input clock from

can

connect

directly

http://www.wolfsonmicro.com/enews/

AC’97 Audio CODEC

mono

stereo

FEATURES

APPLICATIONS

AC’97 Rev 2.2 compatible stereo codec

On-chip 45mW headphone driver

On-chip 400mW mono or stereo speaker drivers

Stereo, mono or differential microphone input

Auxiliary mono DAC (ring tone or DC level generation)

Seamless interface to wireless chipset

Additional PCM/I

PLL derived audio clocks.

Supports input clock ranging from 2.048MHz to 78.6MHz

1.8V to 3.6V supplies (digital down to 1.62V, speaker up to

7x7mm 48-lead QFN package

Personal Digital Assistants (PDA) with or without phone

Smartphones

Handheld and Tablet Computers

- DAC SNR 94dB, THD –85dB

- ADC SNR 87dB, THD –86dB

- Variable Rate Audio, supports all WinCE sample rates

- Tone Control, Bass Boost and 3D Enhancement

- Automatic Level Control (ALC)

- Mic insert and mic button press detection

4.2V)

S interface to support voice CODEC

Pre-Production, June 2006, Rev 3.0

2006 Wolfson Microelectronics plc

WM9714L

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