CS8421 Datasheet | Cirrus Logic

Features  175-d B Dynamic Range  - 140-d B THD+N  No Programming Required  No External Master Clock Required  Supports Sample Rates up to 211 k Hz  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  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 The CS8421 supports sample rates up to 211 k Hz and is available in 20-pin TSSOP and QFN packages in both mercial (-10° to +70°C) and Automotive (-40° to +85°C and -40° to +105°C) grades. The CDB8421 Customer Demonstration board is also available for device evaluation and implementation suggestions. See “Ordering Information” on page 35 for plete details. Level Translators Level Translators 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 http://.cirrus. Copyright  Cirrus Logic, Inc. 2004- 2015 (All Rights Reserved) TDM_IN SDOUT OSCLK OLRCK SRC_UNLOCK MCLK_OUT DS641F7 AUG ‘15 General Description The CS8421 is a 32-bit, high-performance, monolithic CMOS stereo asynchronous sample-rate converter. Digital audio inputs and outputs can be 32, 24, 20, or 16 bits. Input and output data can be pletely asynchronous, synchronous to an external data clock, or the part can operate without any external clock by using an integrated...