CS8421_06 Datasheet, PDF(1/38 Page) Cirrus Logic – 32-bit, 192 kHz Asynchronous Sample Rate Converter

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CS8421_06 Datasheet, PDF (1/38 Pages) Cirrus Logic – 32-bit, 192 kHz Asynchronous Sample Rate Converter

CS8421

32-bit, 192 kHz Asynchronous Sample Rate Converter

Features

! 175 dB Dynamic Range

! â140 dB THD+N

! No Programming Required

! No External Master Clock Required

! Supports Sample Rates up to 211 kHz

! Input/Output Sample Rate Ratios from 7.5:1 to

1:8

! Master Clock Support for 128 x Fs, 256 x Fs,

384 x Fs, and 512 x Fs (Master Mode)

! 16, 20, 24, or 32-bit Data I/O

! 32-bit Internal Signal Processing

! Dither Automatically Applied and Scaled to

Output Resolution

! Flexible 3-Wire Serial Digital Audio Input and

Output Ports

! Master and Slave Modes for Both Input and

Output

! Bypass Mode

! Time Division Multiplexing (TDM) Mode

! Attenuates Clock Jitter

! Multiple Part Outputs are Phase-Matched

! Linear Phase FIR Filter

! Automatic Soft Mute/Unmute

! +2.5 V Digital Supply (VD)

! +3.3 V or 5.0 V Digital Interface (VL)

! Space-Saving 20-Pin TSSOP and QFN

Packages

The CS8421 supports sample rates up to 211 kHz and

is available in 20-pin TSSOP and QFN packages in both

Commercial (-10Â° to +70Â°C) and Automotive (-40Â° to

+85Â°C) grades. The CDB8421 Customer Demonstra-

tion board is also available for device evaluation and

implementation suggestions. Please see âOrdering In-

formationâ on page 36 for complete details.

RST

Level Translators

BYPASS

SDIN

ISCLK

ILRCK

Serial

Audio

Data

Input

Sync Info

Time

Varying

Digital

Filters

Data

Sync Info

MS_SEL

SAIF

SAOF

Serial

Port

Mode

Decoder

Digital

PLL

3.3 V or 5.0 V (VL)

2.5 V (VD) GND

Serial

Data Audio

Output

Clock

Generator

XTI XTO

TDM_IN

SDOUT

OSCLK

OLRCK

SRC_UNLOCK

MCLK_OUT

http://www.cirrus.com

JULY '06

DS641F1

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