ADAV801_15 Datasheet, PDF (1/60 Pages) Analog Devices – Audio Codec for Recordable DVD

FEATURES
Stereo analog-to-digital converter (ADC)
Supports 48 kHz/96 kHz sample rates
102 dB dynamic range
Single-ended input
Automatic level control
Stereo digital-to-analog converter (DAC)
Supports 32 kHz/44.1 kHz/48 kHz/96 kHz/192 kHz
sample rates
101 dB dynamic range
Single-ended output
Asynchronous operation of ADC and DAC
Stereo sample rate converter (SRC)
Input/output range: 8 kHz to 192 kHz
140 dB dynamic range
Digital interfaces
Record
Playback
Auxiliary record
Auxiliary playback
S/PDIF (IEC 60958) input and 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
Audio Codec for Recordable DVD
ADAV801
FUNCTIONAL BLOCK DIAGRAM
VINL
VINR
VREF
VOUTL
VOUTR
FILTD
PLL
CONTROL
REGISTERS
ANALOG-TO-DIGITAL
CONVERTER
REFERENCE SRC
DIGITAL-TO-ANALOG
CONVERTER
DIGITAL
INPUT/OUTPUT
SWITCHING MATRIX
(DATAPATH)
RECORD
DATA
OUTPUT
AUX DATA
OUTPUT
DIT
ADAV801
PLAYBACK
DATA INPUT
AUX DATA
INPUT
DIR
OLRCLK
OBCLK
OSDATA
OAUXLRCLK
OAUXBCLK
OAUXSDATA
DITOUT
ZEROL/INT
ZEROR
APPLICATIONS
DVD-recordable
All formats
CD-R/W
Figure 1.
GENERAL DESCRIPTION
The ADAV801 is a stereo audio codec intended for applications
such as DVD or CD recorders that require high performance
and flexible, cost-effective playback and record functionality.
The ADAV801 features Analog Devices, Inc. proprietary, high
performance converter cores to provide record (ADC), playback
(DAC), and format conversion (SRC) on a single chip. The
ADAV801 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 that 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 that require
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.
Operation of the ADAV801 is controlled via an SPI-compatible
serial interface, which allows the programming of individual
control register settings. The ADAV801 operates from a single
analog 3.3 V power supply and a digital power supply of 3.3 V
with an optional digital interface range of 3.0 V to 3.6 V.
The part is housed in a 64-lead LQFP package and is character-
ized for operation over the commercial temperature range of
−40°C to +85°C.
Rev. A
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