STW5095_07 datasheet(8/73 Pages) STMICROELECTRONICS

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STw5095

Overview

7/72

Overview

The STw5095 control registers are accessed through a selectable I2C-bus compatible or SPI

compatible interface.

The STw5095 asynchronous stereo audio CODEC is designed to easily fit in most audio

systems because it supports an extended master clock range (any value between 4 MHz

and 32 MHz) and at the same time it supports any audio data rate (independent in AD and

DA paths) from 8 kHz to 48 kHz and from 88 kHz to 96 kHz, moreover it can tolerate jitter on

audio data without degrading performance. The audio data serial interfaces (for AD and DA)

can be Master or Slave, are I2S compatible and they support other formats that can easily

interface to standard serial ports. The two audio interfaces can be used as a single

bidirectional interface. Two frequency programmable clock sources are available to generate

the master clock for the audio sub-system of other devices. The internal D to A and A to D

converters work with up to 24 bit resolution.

The supply voltage can be the same for the whole device, in the range 2.4 V to 2.7 V, or it

can be differentiated for digital (VCC: 1.8 V to 2.7 V), analog (VCCA: 2.4 V to 3.3 V) and

loudspeaker driver (VCCLS: VCCA to 5.5 V) to obtain best performance and maximum power

to the loudspeaker (up to 500 mW).

STw5095 has multiple analog mixable inputs and outputs. It can directly drive Stereo

Headphones without external capacitors and it has a Loudspeaker driver that can also be

used for monophonic group listening. Stereo differential and single ended microphones,

auxiliary line in stereo and mono signals can be mixed and connected to the ADC or directly

to the drivers, mixed also with DAC audio signals.

STw5095 stereo audio Codec main applications include multimedia handheld devices such

cellular

phones

with

added

low-power

high-quality

MP3

and

⁄ or FM radio

listening/recording features, or any battery powered equipment such as PDAs, Camcorders,

etc. that require Stereo Audio Codec with Headphones drivers.

Figure 1.

Pin configuration (top view)

234

567

SDA/SDIN

VCC

VCCA

HDET

DA_CK

AD_DATA DA_SYNC

IRQ

DA_OCK

AD_OCK

SCLK

GND

AD_CK

AMCK

AD_SYNC DA_DATA

CMOD

VCCA

MICLN

AUX1L

AS/CSB

VCC

GND

MBIAS

GNDA

AUX3L

MICLP

CAPMIC

VCCIO

VCCA

MICRN

AUX1R

CAPLS

LINEINL

AUX2LP

AUX2LN

AUX3R

GNDA

CAPLINEIN MICRP

LSPS

VCMHPS

GNDCM

OLN

LSNS

LINEINR

AUX2RP

AUX2RN

LSP

VCMHP

GNDP

OLP

LSN

VCCP

GNDP

ORN

GNDP

VCCLS

HPL

VCCP

GNDP

VCCLS

HPR

ORP

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