STW5095 查看數據表（PDF） - STMicroelectronics

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STW5095

Low-power asynchronous stereo audio Codec with integrated power amplifiers

STMicroelectronics 

STw5095

1

Overview

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

as 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)

GND

SCLK AD_OCK DA_OCK AD_CK AMCK AD_SYNC DA_DATA

A

HDET VCCA

VCC SDA/SDIN DA_CK AD_DATA DA_SYNC IRQ

B

AUX1L MICLN VCCA CMOD AS/CSB VCC

GND MBIAS

C

CAPMIC MICLP AUX3L GNDA VCCIO VCCA MICRN AUX1R

D

AUX2LN AUX2LP LINEINL CAPLS AUX3R GNDA CAPLINEIN MICRP

E

OLN GNDCM VCMHPS LSPS LSNS LINEINR AUX2RP AUX2RN

F

OLP

GNDP VCMHP LSP

LSN

VCCP GNDP

ORN

G

VCCP

HPL

VCCLS GNDP GNDP VCCLS HPR

ORP

H

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