DIR9001_15 Datasheet, PDF (1/38 Pages) Texas Instruments – Digital Audio Interface Receiver

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DIR9001
SLES198A – DECEMBER 2006 – REVISED MAY 2015
DIR9001 96-kHz, 24-Bit Digital Audio Interface Receiver
1 Features
•1 One-Chip Digital Audio Interface Receiver (DIR)
Including Low-Jitter Clock-Recovery System
• Compliant With Digital Audio Interface Standards:
IEC60958 (former IEC958), JEITA CPR-1205
(former EIAJ CP-1201, CP-340), AES3, EBU
tech3250
• Clock Recovery and Data Decode From Biphase
Input Signal, Generally Called S/PDIF, EIAJ CP-
1201, IEC60958, AES/EBU
• Biphase Input Signal Sampling Frequency (f_S)
Range: 28 kHz to 108 kHz
• Low-Jitter Recovered System Clock: 50 ps
• Jitter Tolerance Compliant With IEC60958-3
• Selectable Recovered System Clock: 128 f_S,
256 f_S, 384 f_S, 512 f_S
• Serial Audio Data Output Formats: 24-Bit I²S;
MSB-First, 24-Bit Left-Justified; MSB-First 16-, 24-
Bit Right-Justified
• User Data, Channel-Status Data Outputs
Synchronized With Decoded Serial Audio Data
• No External Clock Required for Decode
• Includes Actual Sampling Frequency Calculator
(Needs External 24.576-MHz Clock)
• Function Control: Parallel (Hardware)
• Functions Similar and Pin Assignments Equivalent
to Those of DIR1703
• Single Power Supply: 3.3 V (2.7 V to 3.6 V)
• Wide Operating Temperature Range: –40°C to
85°C
• 5 V-Tolerant Digital Inputs
• Package: 28-pin TSSOP, Pin Pitch: 0,65 mm
2 Applications
• AV/DVD Receiver, AV Amplifier
• Car or Mobile Audio System
• Digital Television
• Musical Instruments
• Recording Systems
• High-End Audio/Sound Card for PC
• Replacement of DIR1703
• Other Applications Requiring S/PDIF Receiver
3 Description
The DIR9001 is a digital audio interface receiver that
can receive a 28-kHz to 108-kHz sampling-
frequency, 24-bit-data-word, biphase-encoded signal.
The DIR9001 complies with IEC60958-3, JEITA CPR-
1205 (Revised version of EIAJ CP-1201), AES3,
EBUtech3250, and it can be used in various
applications that require a digital audio interface.
The DIR9001 supports many output system clock and
output data formats and can be used flexibly in many
application systems. As the all functions which the
DIR9001 provides can be controlled directly through
control pins, it can be used easily in an application
system that does not have a microcontroller. Also, as
dedicated pins are provided for the channel-status bit
and user-data bit, processing of their information can
be easily accomplished by connecting with a
microcontroller, DSP, or others.
The DIR9001 does not require an external clock
source or resonator for decode operation if the
internal actual-sampling-frequency calculator is not
used. Therefore, it is possible to reduce the cost of a
system.
The operating temperature range of the DIR9001 is
specified as –40°C to 85°C, which makes it suitable
for automotive applications.
PART NUMBER
DIR9001
Device Information
PACKAGE
BODY SIZE (NOM)
TSSOP (28)
4.40 mm × 9.70 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Block Diagram
FILT XTI XTO
RXIN
FMT0
FMT1
PSCK0
PSCK1
RSV
RST
Clock and Data Recovery
Preamble
Detector
Charge
Pump
PLL
OSC
VCO
Sampling
Frequency
Calculator
Divider
Function
Control
RESET
Clock
Decoder
Divider
Biphase
Data Decoder
ERROR
Detector
Serial
Audio Data
Formatter
Power Supply
Decoder
DGND
Audio Data
MUTE Control
Channel Status
and
User Data
Output
V_DD DGND
V_CC
AGND
FSOUT0
FSOUT1
SCKO
BCKO
LRCKO
ERROR
CLKST
CKSEL
DOUT
UOUT
COUT
BFRAME
AUDIO
EMPH
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.