ADAV802_15 Datasheet, PDF (1/53 Pages) Analog Devices – Audio Codec For Recordable DVD

Preliminary Technical Data
Audio Codec
For Recordable DVD
ADAV802
FEATURES
Stereo Analog to Digital Converter (ADC)
Supports 48/96 kHz Sample Rates
102 dB Dynamic Range
Single-Ended Input
Automatic Level Control
Stereo Digital to Analog Converter (DAC)
Supports 32/44.1/48/96/192 kHz Sample Rates
103 dB Dynamic Range
Differential Output
Asynchronous operation of ADC and DAC
Stereo Sample Rate Converter (SRC)
Input/Output Range - 8 - 96 kHz
140 dB Dynamic Range
Digital Interfaces
Record
Playback
Aux Record
Aux Playback
S/PDIF (IEC60958) Input & Output
Digital Interface Receiver (DIR)
Digital Interface Transmitter (DIT)
PLL based Audio MCLK Generators
Generates Required DVDR System MCLKs
Device Control via SPI compatible serial port
64-Lead LQFP Package
APPLICATIONS
DVD-Recordable
All Formats
CD-R/W
PRODUCT OVERVIEW
The ADAV802 is a stereo audio codec intended for applications,
such as DVD or CD recorders, requiring high performance,
flexible and cost effective playback and record functionality.
The ADAV802 features Analog Devices proprietary, high
performance converter cores to provide record (ADC), playback
(DAC) and format conversion (SRC) in a single chip. The
ADAV802 record channel features variable input gain to allow
for adjustment of recorded input levels and Automatic Level
Control, followed by a high performance stereo ADC whose
digital output is sent to the record interface. The record channel
also features Level Detectors which can be used in feedback
loops to adjust input levels for optimum recording. The
playback channel features a high performance stereo DAC with
independent digital volume control.
The Sample Rate Converter (SRC) provides high performance
sample-rate conversion to allow inputs and outputs requiring
different sample rates to be matched. The SRC input can be
selected from Playback, Auxiliary, DIR or ADC (record). The
SRC output can be applied to the Playback DAC, both main and
Auxiliary record channels and a DIT. (continued on Page 12)
FUNCTIONAL BLOCK DIAGRAM
VINL
VINR
VREF
VOUTLN
VOUTLP
VOUTRN
VOUTRP
FILTD
Analog to Digital
Converter
Reference SRC
Digital to Analog
Converter
PLL
Digital
Input/Output
Switching Matrix
(Datapath)
Control
Registers
Record
Data
Output
Aux Data
Output
DIT
OLRCLK
OBCLK
OSDATA
OAUXLRCLK
OAUXBCLK
OAUXSDATA
DITOUT
ADAV802
Playback Aux Data DIR
Data Input
Input
ZEROL/INT
ZEROR
802-0001
Figure 1.
Rev. Pr G
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