CDKWM8758B-S-1 datasheet, PDF - EEWORLD Datasheet

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CDKWM8758B-S-1: DescriptionKIT - WM8758B KIT CDB6160 MB DC; CategoryDevelopment board/suite/development tools; File Size1MB，90 Pages; ManufacturerCirrus Logic; Websitehttp://www.cirrus.com; Environmental Compliance

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CDKWM8758B-S-1 Overview

KIT - WM8758B KIT CDB6160 MB DC

CDKWM8758B-S-1 Parametric

Parameter Name	Attribute value
type	Audio
Function	CODEC
Embedded	-
IC/parts used	WM8758B
Main attributes	-
What's included	plate
Auxiliary properties	-

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DESCRIPTION

The WM8758B is a low power, high quality stereo CODEC

designed for portable applications such as MP3 audio player.

The device integrates preamps for stereo differential mics, and

drivers for headphone and differential or stereo line output.

External component requirements are reduced as no separate

microphone or headphone amplifiers are required. Headphone

and line common feedback improves crosstalk and noise

performance.

Advanced on-chip digital signal processing includes a 5-band

equaliser, a mixed signal Automatic Level Control for the

microphone or line input through the ADC as well as a purely

digital limiter function for record or playback. Additional digital

filtering options are available in the ADC path, to cater for

application filtering such as ‘wind noise reduction’ and notch

filter.

The WM8758B digital audio interface can operate in master or

slave mode with an integrated PLL.

The WM8758B operates at analogue supply voltages from 2.5V

to 3.3V, although the digital supply voltages can operate at

voltages down to 1.71V to save power. Additional power

management control enables individual sections of the chip to

be powered down under software control.

WM8758B

Stereo CODEC with Headphone Driver and Line Out

FEATURES

Stereo CODEC:



DAC SNR 100dB, THD -86dB (‘A’ weighted @ 48kHz)



ADC SNR 92.5dB, THD -75dB (‘A’ weighted @ 48kHz)



Headphone Driver



40mW per channel output power into 16 / 3.3V AVDD2



Line output

Mic Preamps:



Stereo Differential or mono microphone Interfaces



Programmable preamp gain



Psuedo differential inputs with common mode rejection



Programmable ALC / Noise Gate in ADC path



Low-noise bias supplied for electret microphones

Other Features:



Enhanced 3-D function for improved stereo separation



Digital playback limiter



5-band Equaliser (record or playback)



Programmable ADC High Pass Filter (wind noise reduction)



Programmable ADC Notch Filter



PLL supporting various clocks between 8MHz-50MHz



Sample rates supported (kHz): 8, 11.025, 12, 16, 22.05, 24,

32, 44.1, 48



Low power, low voltage



2.5V to 3.6V analogue supplies



1.71V to 3.6V digital supplies



5x5mm 32-lead QFN package

APPLICATIONS

BLOCK DIAGRAM



Portable audio player

WOLFSON MICROELECTRONICS plc

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Production Data, January 2012, Rev 4.4

2012

Wolfson Microelectronics plc

WM8758B

TABLE OF CONTENTS

Production Data

DESCRIPTION ....................................................................................................... 1

BLOCK DIAGRAM ................................................................................................ 1

FEATURES ............................................................................................................ 1

APPLICATIONS..................................................................................................... 1

TABLE OF CONTENTS ......................................................................................... 2

PIN CONFIGURATION .......................................................................................... 4

ORDERING INFORMATION .................................................................................. 4

PIN DESCRIPTION ................................................................................................ 5

RECOMMENDED OPERATING CONDITIONS ..................................................... 6

ELECTRICAL CHARACTERISTICS ..................................................................... 7

TERMINOLOGY ............................................................................................................ 12

HEADPHONE OUTPUT PERFORMANCE .......................................................... 13

POWER CONSUMPTION .................................................................................... 14

AUDIO PATHS OVERVIEW ................................................................................ 15

SIGNAL TIMING REQUIREMENTS .................................................................... 16

SYSTEM CLOCK TIMING ............................................................................................. 16

AUDIO INTERFACE TIMING – MASTER MODE .......................................................... 16

AUDIO INTERFACE TIMING – SLAVE MODE ............................................................. 17

CONTROL INTERFACE TIMING – 3-WIRE MODE ...................................................... 18

CONTROL INTERFACE TIMING – 2-WIRE MODE ...................................................... 19

INTERNAL POWER ON RESET CIRCUIT .......................................................... 20

RECOMMENDED POWER UP/DOWN SEQUENCE .................................................... 22

DEVICE DESCRIPTION ...................................................................................... 25

INTRODUCTION ........................................................................................................... 25

INPUT SIGNAL PATH ................................................................................................... 26

ANALOGUE TO DIGITAL CONVERTER (ADC) ........................................................... 33

INPUT LIMITER / AUTOMATIC LEVEL CONTROL (ALC)............................................ 37

OUTPUT SIGNAL PATH ............................................................................................... 42

3D STEREO ENHANCEMENT ...................................................................................... 49

ANALOGUE OUTPUTS ................................................................................................. 49

DIGITAL AUDIO INTERFACES ..................................................................................... 61

AUDIO SAMPLE RATES ............................................................................................... 68

MASTER CLOCK AND PHASE LOCKED LOOP (PLL) ................................................ 68

GENERAL PURPOSE INPUT/OUTPUT........................................................................ 70

OUTPUT SWITCHING (JACK DETECT)....................................................................... 72

CONTROL INTERFACE ................................................................................................ 73

RESETTING THE CHIP ................................................................................................ 74

POWER SUPPLIES....................................................................................................... 75

POWER MANAGEMENT .............................................................................................. 75

POP MINIMISATION ..................................................................................................... 77

DIGITAL FILTER CHARACTERISTICS .............................................................. 80

TERMINOLOGY ............................................................................................................ 80

DAC FILTER RESPONSES .......................................................................................... 81

ADC FILTER RESPONSES .......................................................................................... 81

HIGHPASS FILTER ....................................................................................................... 82

5-BAND EQUALISER .................................................................................................... 83

PD, Rev 4.4, January 2012

CDKWM8758B-S-1 Related Products

	CDKWM8758B-S-1	WM8758CBGEFL/V	CDBWM8758B-M-1
Description	KIT - WM8758B KIT CDB6160 MB DC	IC CODEC STEREO HQ LP 32QFN	EVAL BD - WM8758B MINI EVAL BOAR
type	Audio	Stereo audio	Audio
Function	CODEC	-	CODEC
IC/parts used	WM8758B	-	WM8758B
What's included	plate	-	plate

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