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FEATURES APPLICATIONS
DESCRIPTION
DIR9001-Q1
SLLS843A – JUNE 2007 – REVISED FEBRUARY 2008
96-kHz, 24-Bit Digital Audio Interface Receiver
•Car Audio Head Units23
•One-Chip Digital Audio Interface Receiver(DIR) Including Low-Jitter Clock-Recovery
•Car Audio External AmplifiersSystem
•Compliant With Digital Audio InterfaceStandards: IEC60958 (former IEC958), JEITA
The DIR9001-Q1 is a digital audio interface receiverCPR-1205 (former EIAJ CP-1201, CP-340),
that can receive a 28-kHz to 108-kHz sampling-AES3, EBU tech3250
frequency, 24-bit-data-word, biphase-encoded signal.The DIR9001-Q1 complies with IEC60958-3, JEITA•Clock Recovery and Data Decode From
CPR-1205 (Revised version of EIAJ CP-1201), AES3,Biphase Input Signal, Generally Called S/PDIF,
EBUtech3250, and it can be used in variousEIAJ CP-1201, IEC60958, AES/EBU
applications that require a digital audio interface.•Biphase Input Signal Sampling Frequency (f
S
)
The DIR9001-Q1 supports many output system clockRange: 28 kHz to 108 kHz
and output data formats and can be used flexibly in•Low-Jitter Recovered System Clock: 50 ps
many application systems. As the all functions which•Jitter Tolerance Compliant With IEC60958-3
the DIR9001-Q1 provides can be controlled directlythrough control pins, it can be used easily in an•Selectable Recovered System Clock: 128 f
S
,
application system that does not have a256 f
S
, 384 f
S
, 512 f
S
microcontroller. Also, as dedicated pins are provided•Serial Audio Data Output Formats: 24-Bit I
2
S;
for the channel-status bit and user-data bit,MSB-First, 24-Bit Left-Justified; MSB-First 16-,
processing of their information can be easily24-Bit Right-Justified
accomplished by connecting with a microcontroller,DSP, etc.•User Data, Channel-Status Data OutputsSynchronized With Decoded Serial Audio Data
The DIR9001-Q1 does not require an external clock•No External Clock Required for Decode
source or resonator for decode operation if theinternal actual-sampling-frequency calculator is not•Includes Actual Sampling Frequency
used. Therefore, it is possible to reduce the cost of aCalculator (Needs External 24.576-MHz Clock)
system.•Function Control: Parallel (Hardware)
The operating temperature range of the DIR9001-Q1•Functions Similar and Pin Assignments
is specified as – 40 °C to 85 °C, which makes itEquivalent to Those of DIR1703
suitable for automotive applications.•Single Power Supply: 3.3 V (2.7 V to 3.6 V)•Wide Operating Temperature Range: – 40 °C to85 °C•5 V-Tolerant Digital Inputs•Package: 28-pin TSSOP, Pin Pitch: 0,65 mm
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PRODUCTION DATA information is current as of publication date.
Copyright © 2007 – 2008, Texas Instruments IncorporatedProducts conform to specifications per the terms of the TexasInstruments standard warranty. Production processing does notnecessarily include testing of all parameters.