CS8421 Cirrus Logic, CS8421 Datasheet

CS8421

Manufacturer Part Number

CS8421

Description

32-bit 192 kHz Asynchronous Sample Rate Converter

Manufacturer

Cirrus Logic

Datasheet

1.CS8421.pdf (38 pages)

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Current page: 1 of 38
Download datasheet (793Kb)

Features



MS_SEL

ILRCK

ISCLK

SAOF

175 dB Dynamic Range

–140 dB THD+N

No Programming Required

No External Master Clock Required

Supports Sample Rates up to 211 kHz

Input/Output Sample Rate Ratios of 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

SDIN

SAIF

http://www.cirrus.com

32-bit, 192 kHz Asynchronous Sample Rate Converter

3.3 V or 5.0 V (VL)

Serial

Audio

Decoder

Input

Serial

Mode

RST

Port

Sync Info

Data

2.5 V (VD)

Varying

Digital

Filters

Digital

Time

PLL

Level Translators

Sync Info

GND

Data



The CS8421 supports sample rates up to 211 kHz and

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

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

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

tion board is also available for device evaluation and

implementation suggestions. Please see

formation” on page 36

Bypass Mode

Time Division Multiplexing (TDM) Mode

Attenuates Clock Jitter

Multiple Device 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

BYPASS

XTI

Generator

Data

Clock

Output

XTO

Audio

Serial

for complete details.

www.DataSheet4U.com

CS8421

TDM_IN

SDOUT

OSCLK

OLRCK

SRC_UNLOCK

MCLK_OUT

“Ordering In-

APRIL ‘09

DS641F2

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