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WM8756 PDF даташит

Спецификация WM8756 изготовлена ​​​​«Wolfson Microelectronics plc» и имеет функцию, называемую «192KHZ SIX CHANNEL SACD COMPATIBLE AUDIO DAC».

Детали детали

Номер произв WM8756
Описание 192KHZ SIX CHANNEL SACD COMPATIBLE AUDIO DAC
Производители Wolfson Microelectronics plc
логотип Wolfson Microelectronics plc логотип 

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WM8756 Даташит, Описание, Даташиты
WM8756
192kHz, Six Channel SACD™ Compatible Audio DAC
DESCRIPTION
The WM8756 is a high performance 6-channel DAC
designed for audio applications such as SACD™ players,
DVD-V and DVD-A, home audio and theatre systems. The
device supports data input word lengths from 16 to 32-bits
and sampling rates up to 192kHz. The WM8756 can
implement 2 or 6 channels at 192kHz for high-end DVD-
Audio, or 6 channels at up to 192kHz for surround
applications. Additionally 64x DSD bitstream support is
offered on all 6 channels. The WM8756 consists of a serial
interface port, digital interpolation filters, multi-bit sigma
delta modulators and 6 DACs in a 48-pin TQFP package.
The WM8756 also includes a digitally controllable mute and
attenuator function on each channel, accessible during
PCM operation. An on-chip multiplexer selects between
PCM or DSD audio data input pins.
The WM8756 supports hardware or software connection
schemes for audio DAC control. The serial control interface
provides access to a wide range of features including on-
chip mute, attenuation and phase reversal. Hardware pin-
controllable operation is also available.
The WM8756 is an ideal device for all surround sound
applications supporting the SACD™ audio format, such as
SACD players, multi-format players and home
entertainment systems.
FEATURES
6-Channel DAC with PCM or Bitstream (DSD) operation.
DSD 64x Bitstream Support for Super Audio CD™
Independent input pins for PCM and DSD data with on-
chip multiplexer
THD –96dB, SNR 106dB (‘A’ weighted @ 48kHz)
PCM mode Sampling Rate: 8kHz – 192kHz
Master or slave operation with Normal or Phase
modulation method of DSD data transfer
3-Wire Serial Control Interface
Programmable PCM Audio Data Interface Modes
I2S, Left, Right Justified or DSP
16/20/24/32 bit Word Lengths
Independent Digital Volume Control on Each Channel with
127.5dB Range in 0.5dB Steps (in PCM mode)
3.0V – 5.5V Supply (3.3V digital / 5V analogue option)
48-pin TQFP Package
APPLICATIONS
Super Audio CD (SACD™) Players
Universal and Multi-Format disc players
Home theatre systems
BLOCK DIAGRAM
CSB SCKI ML/I2S MC/IWL MD/DM DSDB MODE MUTE DMSLV DMCKSEL
BCKIN
LRCIN
LRCIN2
DIN0
DIN1
DIN2
PCM
DATA
DSDCLK128
DSDCLK64
DSD0
DSD1
DSD2
DSD3
DSD4
DSD5
AUDIO
INTERFACE
DSD
DATA
CONTROL
INTERFACE
PCM/DSD
DIGITAL
FILTERS
SIGMA
DELTA
MODULATOR
MUX
RIGHT
DAC
SIGMA
DELTA
MODULATOR
MUX
LEFT
DAC
PCM/DSD
DIGITAL
FILTERS
SIGMA
DELTA
MODULATOR
MUX
RIGHT
DAC
SIGMA
DELTA
MODULATOR
MUX
LEFT
DAC
DIGITAL
FILTERS
PCM/DSD
SIGMA
DELTA
MODULATOR
MUX
RIGHT
DAC
SIGMA
DELTA
MODULATOR
MUX
LEFT
DAC
LOW
PASS
FILTER
LOW
PASS
FILTER
LOW
PASS
FILTER
LOW
PASS
FILTER
LOW
PASS
FILTER
LOW
PASS
FILTER
OUT0R
GR0
OUT0L
OUT1R
GR1
OUT1L
OUT2R
GR2
OUT2L
DVDD DGND
WOLFSON MICROELECTRONICS LTD
www.wolfsonmicro.com
AGND1 AGND2 AGND3 AVDD1 AVDD2
Advance Information October 2001, Rev 1.3
Copyright 2001 Wolfson Microelectronics Ltd.









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WM8756 Даташит, Описание, Даташиты
WM8756
PIN CONFIGURATION
Advance Information
ORDERING INFORMATION
DEVICE
WM8756EFT
TEMP. RANGE
-25 to +85oC
PACKAGE
48-pin TQFP
DIN1
DIN2
DSD0
DSD1
DSD2
DSD3
DSD4
DSD5
DSDCLK64
DSDCLK128
MODE
MUTE
48 47 46 45 44 43 42 41 40 39 38 37
1 36
2 35
3 34
4 33
5 32
6 31
7 30
8 29
9 28
10 27
11 26
12 25
13 14 15 16 17 18 19 20 21 22 23 24
OUT0R
GR0
OUT0L
AGND3
OUT1R
GR1
OUT1L
AGND2
AGND1
OUT2R
GR2
OUT2L
AI Rev 1.3 October 2001
2









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WM8756 Даташит, Описание, Даташиты
WM8756
Advance Information
PIN DESCRIPTION
PIN NAME
TYPE
DESCRIPTION
1
DIN1
Digital input
Channel 1 Serial Audio Data Input in PCM Mode.
2
DIN2
Digital input
Channel 2 Serial Audio Data Input in PCM Mode.
3
DSD0
Digital input p.d. Channel 0 Left DSD format audio data input
4
DSD1
Digital input p.d. Channel 0 Right DSD format audio data input
5
DSD2
Digital input p.d. Channel 1 Left DSD format audio data input
6
DSD3
Digital input p.d. Channel 1 Right DSD format audio data input
7
DSD4
Digital input p.d. Channel 2 Left DSD format audio data input
8
DSD5
Digital input p.d. Channel 2 Right DSD format audio data input
9
DSDCLK64
Digital In/Out DSD format data clock at 64fs
10
DSDCLK128
Digital In/Out DSD format data clock at 128fs (used in ‘modulated data’ mode)
11
MODE
Digital input
Control Method Selection Pin in PCM Mode. ‘lo’ = software mode
12
MUTE
Digital In/Out Mute Control Pin in PCM Mode. ‘lo’ = not muted
13
LRCIN2
Digital input p.d. Second LRCIN input for dual rate mode
14
DSDB
Digital input p.u. DSD or PCM audio data format select; ‘lo’ = DSD mode, ‘hi’ = PCM mode
15 DGND
Supply
Digital GND
16
ML/I2S
Digital input p.u. Software mode: in 3-Wire Serial Control mode, Latch input.
Hardware Mode: Input Format Selection:
17
MC/IWL
Digital input p.u. Software Mode: In 3-Wire Serial Control Mode, Clock Input.
Hardware mode: Input Word Length Selection:
18
MD/DM
Digital input
Software mode: In 3-Wire Serial Control Mode, Data Input.
Hardware mode: De-emphasis selection
19
CSB
Digital input p.d. 3-wire Serial Port Chip select – active low
20 n.c.
n.c. No internal connection
21 AVDD2
Supply
Analogue Positive DAC Reference
22 n.c.
n.c. No internal connection
23
CAP
Analogue output Analogue Internal Mid-Rail Reference De-Coupling Point
24 n.c.
n.c. No internal connection
25
OUT2L
Analogue output Left Channel 2 Output.
26
GR2
Analogue input Channel 2 Negative Reference.
27
OUT2R
Analogue output Right Channel 2 Output.
28 AGND1
Supply
Analogue GND
29 AGND2
Supply
Analogue GND
30
OUT1L
Analogue output Left Channel 1 Output.
31
GR1
Analogue input Channel 1 Negative Reference.
32
OUT1R
Analogue output Right Channel 1 Output.
33 AGND3
Supply
Analogue GND
34
OUT0L
Analogue output Left Channel 0 Output.
35
GR0
Analogue input Channel 0 Negative Reference.
36
OUT0R
Analogue output Right Channel 0 Output.
37-39
nc
nc No internal connection
40 AVDD1
Supply
Analogue positive supply
41 nc
nc No internal connection
42
DMSLV
Digital input p.d. DSD mode master or slave operation select; ‘lo’ = SLAVE (clocks are input)
43
DMCKSEL
Digital input p.d. DSD Master Mode Clock Select (lo for 256fs; hi for 384fs)
44 DVDD
Supply
Digital Positive Supply.
45
SCKI
Digital input
Master Clock Input
46
BCKIN
Digital input
Audio Data Bit Clock Input.
47
LRCIN
Digital input
DAC Sample Rate Clock Input in PCM Mode
48
DIN0
Digital input
Channel 0 Serial Audio Data Input in PCM Mode.
Note - Digital input pins have Schmitt trigger input buffers. Pins marked ‘p.u.’ or ‘p.d.’ have internal pull-up or pull down.
AI Rev 1.3 October 2001
3










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