8802SC WM8802 Datasheet

8802SC Datasheet, PDF, Equivalent


Part Number

8802SC

Description

WM8802

Manufacture

WOLFSON

Total Page 30 Pages
Datasheet
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8802SC
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WM8802
Digital Audio Interface Transceiver
DESCRIPTION
The WM8802 is a digital audio interface transceiver
conforming to IEC 60958/61937 and EIAJ CP-1201. The
device supports data sampling input rates of up to 192 kHz.
Data input to the serial digital audio data input pin can also
be modulated. The WM8802 features up to 6 data inputs
and 1 data output.
Data can be demodulated using the on-board PLL or with
the use of an external clock source.
The WM8802 is controlled via a 4-wire CCB compatible
control interface. This interface provides access to the
channel status bits. The WM8802 also provides a number
of flag outputs including PCM data valid, de-emphasis, lock
and IEC 61937, DTS-CD/LD detection.
The device is available in a small 48-pin SQFP package.
FEATURES
PLL circuit for synchronization with transferred input bi-
phase mark signal.
Input sampling frequency: 32kHz to 192kHz
Outputs clocks: fs, fs/2, 2fs, 32fs, 64fs, 128fs, 256fs,
384fs, and 512fs.
4-Wire CCB MPU Serial Control or Hardware Default
Interface
Master or Slave Clocking Mode
Programmable Audio Data Interface Modes
I2S, Left, Right Justified
16/20/24/32 bit Word Lengths
3.3V Digital supply Operation
5V tolerant digital input ports
APPLICATIONS
DVD Receivers
AV Amplifiers
DVD Recorders
BLOCK DIAGRAM
RXOUT
RX0
RX1
RX2
RX3
RX4
RX5/VI
RX6/UI
EMPH/UO AUDIO/VO
W
WM8802
CBIT, UBIT
INPUT
SELECTOR
DEMODULATION
AND
LOCK DETECT
INT CL CE DI XMODE
MICROCONTROLLER
I/F
DATA
SELECTOR
DO
RERR
RDATA
SDIN
LPF
TMCLK/GPIO0
TBCLK/GPIO1
TLRCLK/GPIO2
TDATA/GPIO3
MODULATION
AND
PARALLEL PORT
PLL
CLOCK
SELECTOR
1/N
RMCK
RBCK
RLRCK
SBCK
SLRCK
TXO/GPIOEN
WOLFSON MICROELECTRONICS plc
w :: www.wolfsonmicro.com
XIN XOUT XMCLK CKST
Product Preview, April 2004, Rev 1.1
Copyright 2004 Wolfson Microelectronics plc

8802SC
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WM8802
TABLE OF CONTENTS
Product Preview
DESCRIPTION .......................................................................................................1
FEATURES.............................................................................................................1
APPLICATIONS .....................................................................................................1
BLOCK DIAGRAM .................................................................................................1
PIN CONFIGURATION...........................................................................................3
ORDERING INFORMATION ..................................................................................3
PIN DESCRIPTION ................................................................................................4
ABSOLUTE MAXIMUM RATINGS.........................................................................6
RECOMMENDED OPERATING CONDITIONS .....................................................7
ELECTRICAL CHARACTERISTICS ......................................................................7
DC CHARACTERISTICS............................................................................................... 7
AC CHARACTERISTICS............................................................................................... 8
MICROCONTROLLER INTERFACE AC CHARACTERISTICS ..................................... 9
DEVICE DESCRIPTION.......................................................................................10
INITIAL SYSTEM SETTINGS...............................................................................10
SYSTEM RESET (XMODE)......................................................................................... 10
CHIP ADDRESS SETTINGS (EMPHA/UO, AUDIO /VO) ............................................ 11
DEMODULATION FUNCTION MASTER/SLAVE SETTINGS ( CKST ) ....................... 12
MODULATION FUNCTION AND GENERAL-PURPOSE I/O PORT SWITCHING ( INT ).....12
DESCRIPTION OF DEMODULATION FUNCTION..............................................13
CLOCKS...................................................................................................................... 13
BI-PHASE SIGNAL INPUT / OUTPUT ........................................................................ 21
SERIAL AUDIO DATA INPUT/OUTPUT...................................................................... 23
ERROR OUTPUT PROCESSING ............................................................................... 27
CHANNEL STATUS OUTPUT..................................................................................... 30
OTHER OUTPUTS...................................................................................................... 31
IEC61937, DTS-CD/LD DETECTION FLAG OUTPUT ................................................ 32
DESCRIPTION OF MODULATION FUNCTION AND GENERAL-PURPOSE I/OS ... 33
MODULATION FUNCTION USAGE METHOD............................................................ 33
GENERAL PURPOSE I/O (GPIO0, GPIO1, GPIO2, GPIO3, GPIOEN)....................... 36
MICRO-CONTROLLER INTERFACE ( INT , CL, CE, DI, DO)..............................37
DESCRIPTION OF MICRO-CONTROLLER INTERFACE ........................................... 37
WRITE DATA .............................................................................................................. 40
READ DATA ................................................................................................................ 53
BURST PREAMBLE PC FIELD ................................................................................... 61
RECOMMENDED EXTERNAL COMPONENTS ..................................................62
SAMPLE APPLICATION ............................................................................................. 62
RECOMMENDED EXTERNAL COMPONENTS VALUES ........................................... 63
PACKAGE DRAWING..........................................................................................64
IMPORTANT NOTICE ..........................................................................................65
ADDRESS: .................................................................................................................. 65
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PP Rev 1.1 April 2004
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Features www.DataSheet4U.com w Digital Audio Int erface Transceiver DESCRIPTION The WM88 02 is a digital audio interface transce iver conforming to IEC 60958/61937 and EIAJ CP-1201. The device supports data sampling input rates of up to 192 kHz. Data input to the serial digital audio data input pin can also be modulated. T he WM8802 features up to 6 data inputs and 1 data output. Data can be demodula ted using the on-board PLL or with the use of an external clock source. The WM 8802 is controlled via a 4-wire CCB com patible control interface. This interfa ce provides access to the channel statu s bits. The WM8802 also provides a numb er of flag outputs including PCM data v alid, de-emphasis, lock and IEC 61937, DTS-CD/LD detection. The device is avai lable in a small 48-pin SQFP package. WM8802 FEATURES • • • • • PLL circuit for synchronization with transferred input biphase mark signal. Input sampling frequency: 32kHz to 192k Hz Outputs clocks: fs, fs/2, 2fs, 32fs, 64fs, 128fs, 256fs, 384fs, and 512f.
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