Clock and Data Recovery

SCKO

BCKO

LRCKO

DOUT

RXIN

Divider

FILT

XTO

XTI

FSOUT0

FSOUT1

RST

OSC

RESET

CLKST

EMPH

UOUT

COUT

BFRAME

VCO

CKSEL

DGND

ERROR

AUDIO

Power Supply

V

DD

DGND

AGND

V

CC

PSCK0

PSCK1

FMT0

RSV

PLL

Divider

Decoder

FMT1

Preamble

Detector

Charge

Pump

Sampling

Frequency

Calculator

Clock

Decoder

Biphase

Data Decoder

Serial

AudioData

Formatter

ERROR

Detector

Function

Control

AudioData

MUTE Control

Channel Status

and

UserData

Output

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

DIR9001

SLES198A – DECEMBER 2006 – REVISED MAY 2015

DIR9001 96-kHz, 24-Bit Digital Audio Interface Receiver

1 Features

3 Description

The DIR9001 is a digital audio interface receiver that

1

•

One-Chip Digital Audio Interface Receiver (DIR)

can

receive

a

28-kHz

to

108-kHz

sampling-

Including Low-Jitter Clock-Recovery System

frequency, 24-bit-data-word, biphase-encoded signal.

•

Compliant With Digital Audio Interface Standards:

The DIR9001 complies with IEC60958-3, JEITA CPR-

IEC60958 (former IEC958), JEITA CPR-1205

1205 (Revised version of EIAJ CP-1201), AES3,

(former EIAJ CP-1201, CP-340), AES3, EBU

EBUtech3250, and it can be used in various

tech3250

applications that require a digital audio interface.

•

Clock Recovery and Data Decode From Biphase

The DIR9001 supports many output system clock and

Input Signal, Generally Called S/PDIF, EIAJ CP-

output data formats and can be used flexibly in many

1201, IEC60958, AES/EBU

application systems. As the all functions which the

DIR9001 provides can be controlled directly through

•

Biphase Input Signal Sampling Frequency (fS)

control pins, it can be used easily in an application

Range: 28 kHz to 108 kHz

system that does not have a microcontroller. Also, as

•

Low-Jitter Recovered System Clock: 50 ps

dedicated pins are provided for the channel-status bit

•

Jitter Tolerance Compliant With IEC60958-3

and user-data bit, processing of their information can

be

easily

accomplished

by

connecting

with

a

•

Selectable Recovered System Clock: 128 fS,

microcontroller, DSP, or others.

256 fS, 384 fS, 512 fS

•

Serial Audio Data Output Formats: 24-Bit I2S;

The DIR9001 does not require an external clock

source or resonator for decode operation if the

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

internal actual-sampling-frequency calculator is not

Bit Right-Justified

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

•

User Data, Channel-Status Data Outputs

system.

Synchronized With Decoded Serial Audio Data

The operating temperature range of the DIR9001 is

•

No External Clock Required for Decode

specified as –40°C to 85°C, which makes it suitable

•

Includes Actual Sampling Frequency Calculator

for automotive applications.

(Needs External 24.576-MHz Clock)

•

Function Control: Parallel (Hardware)

Device Information

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Functions Similar and Pin Assignments Equivalent

to Those of DIR1703

DIR9001

TSSOP (28)

4.40 mm × 9.70 mm

•

Single Power Supply: 3.3 V (2.7 V to 3.6 V)

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

•

Wide Operating Temperature Range: –40°C to

85°C

•

5 V-Tolerant Digital Inputs

Block Diagram

•

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

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.