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STA304A

March 2002

This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.

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STA304AEND TO END DIGITAL AUDIO

INTEGRATED SOLUTION

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· DSP Functions:

- DIGITAL VOLUME CONTROL

- SOFT MUTE

- BASS and TREBLE

- PARAMETRIC EQ PER CHANNEL

- BASS MANAGEMENT FOR SUBWOOFER

- AUTO MUTE ON ZERO INPUT DETECTION

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4+1 DIRECT DIGITAL AMPLIFICATION

(DDX™) OUTPUT CHANNELs

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6 CHANNELs PROGRAMMABLE SERIAL

OUTPUT INTERFACE (by default I2S)

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4 CHANNELs PROGRAMMABLE SERIAL

INPUT INTERFACE (by default I2S)

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STEREO S/PDIF INPUT INTERFACE

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Intel AC'97 LINK (rev. 2.1) INPUT INTERFACE

FOR AUDIO AND CONTROL

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ON CHIP AUTOMATIC INPUT SAMPLING

FREQUENCY DETECTION

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100 dB SNR SAMPLE RATE CONVERTER

(1KHz SINUSOIDAL INPUT)

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LOW POWER 3.3V CMOS TECHNOLOGY

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EMBEDDED PLL FOR INTERNAL CLOCK

GENERATION (1024x48 kHz = 49.152 MHz)

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6.144 MHz EXTERNAL INPUT CLOCK OR

BUILT-IN INDUSTRY STANDARD XTAL

OSCILLATOR

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VARIABLE DIGITAL GAIN UP TO 24dB

(0.75dB STEP)

1.0 DESCRIPTION

The STA304A Digital Audio Processor is a single

chip device implementing end to end digital solution

for audio application. In conjunction with STA500

power bridge it gives the full digital DSP-to-power

high quality chain with no need for audio Digital-to-

Analog converters between DSP and power stage.

TQFP44

ORDERING NUMBER: STA304A

PRODUCT PREVIEW

DIGITAL AUDIO PROCESSOR WITH MULTICHANNEL DDX™

BLOCK DIAGRAM

DSP

SRC

I2S

AC`97

S/PDIF

DDX

I2S

PLL

I2C

RESET

LRCKI / SYNC

SDI_1 / SDATA_OUT

SDI_2 / SDATA_IN

RXP

RXN

BICKI / BIT_CL

SDO_1

SDO_2

SDO_3

LRCKO

BICKO

XTI

XTO

LEFT_A

LEFT_B

RIGHT_A

RIGHT_B

SLEFT_A

SLEFT_B

SRIGHT_A

SRIGHT_B

LFE_A

LFE_B

SCL

SDA

SA

RAM

ROM

CKOUT

18

1

2

3

4

19

11

10

9

7

14

15

43

43

43

43

43

43

22

21

24

23

34

33

28

27

30

29

PowerDown

44

35

EAPD

PWDN