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WM8734 PDF даташит

Спецификация WM8734 изготовлена ​​​​«ETC» и имеет функцию, называемую «STEREO AUDIO CODEC».

Детали детали

Номер произв WM8734
Описание STEREO AUDIO CODEC
Производители ETC
логотип ETC логотип 

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WM8734 Даташит, Описание, Даташиты
w
Stereo Audio CODEC
WM8734
DESCRIPTION
The WM8734 is a low power stereo CODEC ideal for MD,
CD-RW machines and DAT recording applications.
Stereo line inputs are provided, along with a mute function
and programmable line level volume control.
Stereo 24-bit multi-bit sigma delta ADCs and DACs are
used with oversampling digital interpolation and decimation
filters.
Digital audio input word lengths from 16-32 bits and
sampling rates from 8kHz to 96kHz are supported.
Stereo audio line level outputs are provided along with anti-
thump mute and power up/down circuitry.
The device is controlled via a 2 or 3 wire serial interface.
The interface provides access to all features including level
controls, mutes, de-emphasis and power management
facilities. The device is available in 20-pin SSOP or 5x5mm
QFN packages.
FEATURES
Audio Performance
90dB SNR (‘A’ weighted @ 48kHz) ADC
100dB SNR (‘A’ weighted @ 48kHz) DAC
2.7 – 3.6V Digital Supply Operation
2.7 – 3.6V Analogue Supply Operation
ADC and DAC Sampling Frequency: 8kHz – 96kHz
Selectable ADC High Pass Filter
2 or 3-Wire MPU Serial Control Interface
Programmable Audio Data Interface Modes
I2S, Left, Right Justified or DSP
16/20/24/32 bit Word Lengths
Master or Slave Clocking Mode
Stereo Audio Inputs and Outputs
20-Pin SSOP or 5x5mm QFN Package Options
APPLICATIONS
CD and Minidisc Recorder
MP3 Player / Recorder
BLOCK DIAGRAM
AVDD
VMID
AGND
RLINEIN
LLINEIN
CONTROL INTERFACE
W
WM8734
VOL
+12 to -34.5dB,
1.5dB Steps
VOL
+12 to -34.5dB,
1.5dB Steps
CLKIN
DIVIDER
(Div x1, x2)
ADC
ADC
DIGITAL
FILTERS
DAC
MUTE
DAC
MUTE
DIGTAL AUDIO INTERFACE
ROUT
LOUT
WOLFSON MICROELECTRONICS LTD
www.wolfsonmicro.com
Advanced Information, November 2001, Rev 2.2
Copyright 2001 Wolfson Microelectronics Ltd.









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WM8734 Даташит, Описание, Даташиты
WM8734
Advanced Information
PIN CONFIGURATION – SSOP
DGND
DBVDD
BCLK
DACDAT
DACLRC
ADCDAT
ADCLRC
LOUT
ROUT
AVDD
1
2
3
4
5
6
7
8
9
10
20 DCVDD
19 MCLK
18 SCLK
17 SDIN
16 CSB
15 MODE
14 LLINEIN
13 RLINEIN
12 VMID
11 AGND
ORDERING INFORMATION - SSOP
DEVICE
XWM8734EDS
TEMP. RANGE
-10 to +70oC
PACKAGE
20-pin SSOP
PIN DESCRIPTION - SSOP
PIN NAME
TYPE
DESCRIPTION
1 DGND
Ground
Digital GND
2 DBVDD
Supply
Digital Buffers VDD
3
BCLK
Digital Input/Output Digital Audio Bit Clock, Pull Down, (see Note 1)
4
DACDAT
Digital Input
DAC Digital Audio Data Input
5 DACLRC Digital Input/Output DAC Sample Rate Left/Right Clock. Pull Down (see Note 1)
6
ADCDAT
Digital Output
ADC Digital Audio Data Output
7 ADCLRC Digital Input/Output ADC Sample Rate Left/Right Clock, Pull Down (see Note 1)
8
LOUT
Analogue Output Left Channel Line Output
9
ROUT
Analogue Output Right Channel Line Output
10 AVDD
Supply
Analogue VDD
11 AGND
Ground
Analogue GND
12
VMID
Analogue Output Mid-rail reference decoupling point
13
RLINEIN
Analogue Input Right Channel Line Input (AC coupled)
14
LLINEIN
Analogue Input Left Channel Line Input (AC coupled)
15
MODE
Digital Input
Control Interface Selection, Pull Up (see Note 1)
16
CSB
Digital Input
3-Wire MPU Chip Select / 2-Wire MPU interface address selection, active low,
Pull up (see Note 1)
17
SDIN
Digital Input/Output 3-Wire MPU Data Input / 2-Wire MPU Data Input
18
SCLK
Digital Input
3-Wire MPU Clock Input / 2-Wire MPU Clock Input
19
MCLK
Digital Input
Master Clock Input (MCLK)
20 DCVDD
Supply
Digital Core VDD
Note:
1. Pull Up/Down only present when Control Register Interface ACTIVE = 0 to conserve power.
w
AI Rev 2.2 November 2001
2









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WM8734 Даташит, Описание, Даташиты
WM8734
Advanced Information
PIN CONFIGURATION – QFN
21 20 19 18 17 16 15
NC 22
14 NC
RLINEIN 23
13 NC
LLINEIN 24
12 NC
MODE 25
11 ADCLRC
CSB 26
10 ADCDAT
SDIN 27
9 DACLRC
SCLK 28
8 DACDAT
1234 567
ORDERING INFORMATION - QFN
DEVICE
XWM8734EFL
TEMP. RANGE
-10 to +70oC
PACKAGE
28-pin QFN
(5x5x0.9mm)
PIN DESCRIPTION - QFN
PIN NAME
TYPE
DESCRIPTION
1
MCLK
Digital Input
Master Clock Input (MCLK)
2 NC Do Not Connect Test Pin, must be left unconnected
3 DCVDD
Supply
Digital Core VDD
4 DGND
Ground
Digital GND
5 DBVDD
Supply
Digital Buffers VDD
6 NC Do Not Connect Test Pin, must be left unconnected
7
BCLK
Digital Input/Output Digital Audio Bit Clock, Pull Down, (see Note 1)
8
DACDAT
Digital Input
DAC Digital Audio Data Input
9 DACLRC Digital Input/Output DAC Sample Rate Left/Right Clock. Pull Down (see Note 1)
10
ADCDAT
Digital Output
ADC Digital Audio Data Output
11 ADCLRC Digital Input/Output ADC Sample Rate Left/Right Clock, Pull Down (see Note 1)
12 NC Do Not Connect Test Pin, must be left unconnected
13 NC Do Not Connect Test Pin, must be left unconnected
14 NC Do Not Connect Test Pin, must be left unconnected
15 NC Do Not Connect Test Pin, must be left unconnected
16
LOUT
Analogue Output Left Channel Line Output
17
ROUT
Analogue Output Right Channel Line Output
18 AVDD
Supply
Analogue VDD
19 AGND
Ground
Analogue GND
20
VMID
Analogue Output Mid-rail reference decoupling point
21 NC Do Not Connect Test Pin, must be left unconnected
22 NC Do Not Connect Test Pin, must be left unconnected
23
RLINEIN
Analogue Input Right Channel Line Input (AC coupled)
24
LLINEIN
Analogue Input Left Channel Line Input (AC coupled)
25
MODE
Digital Input
Control Interface Selection, Pull Up (see Note 1)
26
CSB
Digital Input
3-Wire MPU Chip Select / 2-Wire MPU interface address selection, active low,
Pull up (see Note 1)
27
SDIN
Digital Input/Output 3-Wire MPU Data Input / 2-Wire MPU Data Input
28
SCLK
Digital Input
3-Wire MPU Clock Input / 2-Wire MPU Clock Input
w
AI Rev 2.2 November 2001
3










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