BurrĆBrown Products
from Texas Instruments
DIR9001-Q1
SLLS843A – JUNE 2007 – REVISED FEBRUARY 2008
96-kHz, 24-Bit Digital Audio Interface Receiver
FEATURES
APPLICATIONS
• 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 (fS)
Range: 28 kHz to 108 kHz
• Low-Jitter Recovered System Clock: 50 ps
• Jitter Tolerance Compliant With IEC60958-3
• Selectable Recovered System Clock: 128 fS,
256 fS, 384 fS, 512 fS
• 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
•
•
1
23
Car Audio Head Units
Car Audio External Amplifiers
DESCRIPTION
The DIR9001-Q1 is a digital audio interface receiver
that can receive a 28-kHz to 108-kHz samplingfrequency, 24-bit-data-word, biphase-encoded signal.
The DIR9001-Q1 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-Q1 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-Q1 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, etc.
The DIR9001-Q1 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-Q1
is specified as –40°C to 85°C, which makes it
suitable for automotive applications.
1
2
3
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SpAct is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007–2008, Texas Instruments Incorporated
