BurrBrown Products

from Texas Instruments

1

FEATURES

APPLICATIONS

DESCRIPTION

DIR9001-Q1

SLLS843A – JUNE 2007 – REVISED FEBRUARY 2008

96-kHz, 24-Bit Digital Audio Interface Receiver

• Car Audio Head Units

23

• One-Chip Digital Audio Interface Receiver

(DIR) Including Low-Jitter Clock-Recovery

• Car Audio External Amplifiers

System

• Compliant With Digital Audio Interface

Standards: IEC60958 (former IEC958), JEITA

The DIR9001-Q1 is a digital audio interface receiver

CPR-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

various

EIAJ 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 clock

Range: 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 directly

through control pins, it can be used easily in an

• Selectable Recovered System Clock: 128 f

S,

application

system

that

does

not

have

a

256 fS, 384 fS, 512 fS

microcontroller. Also, as dedicated pins are provided

• Serial Audio Data Output Formats: 24-Bit I2S;

for

the

channel-status

bit

and

user-data

bit,

MSB-First, 24-Bit Left-Justified; MSB-First 16-,

processing

of

their

information

can

be

easily

24-Bit Right-Justified

accomplished by connecting with a microcontroller,

DSP, etc.

• User Data, Channel-Status Data Outputs

Synchronized 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 the

internal actual-sampling-frequency calculator is not

• Includes Actual Sampling Frequency

used. Therefore, it is possible to reduce the cost of a

Calculator (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 it

Equivalent 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 to

85

°C

• 5 V-Tolerant Digital Inputs

• Package: 28-pin TSSOP, Pin Pitch: 0,65 mm

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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.

2

SpAct is a trademark of Texas Instruments.

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All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2007–2008, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.