CS8422 24-bit, 192-kHz, Asynchronous Sample Rate Converter with Integrated Digital Audio Interface Receiver Sample Rate Converter Features Digital Audio Interface Receiver Features 140 dB Dynamic Range Complete EIAJ CP1201, IEC-60958, AES3, S/PDIF Compatible Receiver -120 dB THD+N 28 kHz to 216 kHz Sample Rate Range 2:1 Differential AES3 or 4:1 S/PDIF Input Mux No External Master Clock Required De-emphasis Filtering for 32 kHz, 44.1 kHz, and 48 kHz Supports Sample Rates up to 211 kHz Recovered Master Clock Output: 64 x Fs, 96 x Fs, 128 x Fs, 192 x Fs, 256 x Fs, 384 x Fs, 512 x Fs, 768 x Fs, 1024 x Fs Input/Output Sample Rate Ratios from 6:1 to 49.152 MHz Maximum Recovered Master 1:6 Clock Frequency Ultralow-jitter Clock Recovery Master Mode Master Clock/Sample Rate Ratio Support: 64, 96, 128, 192, 256, 384, 512, 768, High Input Jitter Tolerance 1024 No External PLL Filter Components Required Selectable and Automatic Clock Switching 16, 18, 20, or 24-bit Data I/O AES3 Direct Output and AES3 TX Pass- through Dither Automatically Applied and Scaled to On-chip Channel Status Data Buffering Output Resolution Automatic Detection of Compressed Audio Streams Multiple Device Outputs are Phase Matched Decodes CD Q Sub-Code VL Level Translators SDIN Serial ISCLK Audio ILRCK Input SDOUT1 Serial Audio OSCLK1 Sample 2:1 3:1 Rate Output OLRCK1 MUX MUX RX0/RXP0 Converter RX1/RXN0 4:1 TDM IN Receiver RX2/RXP1 MUX Clock & RX3/RXN1 Data Serial SDOUT2 3:1 Recovery Audio OSCLK2 MUX (PLL) Output C or U Data Buffer OLRCK2 (First 5 Bytes) VA AGND Clock GPO0 Format Generator General Detect Control Port & Registers GPO1 Purpose GPO2 Outputs DGND GPO3 V REG Level Translators XTI XTO RMCK SDA/ SCL/ AD1/ AD0/ CDOUT CCLK CDIN CS Copyright Cirrus Logic, Inc. 2012 NOV 12 (All Rights Reserved) DS692F2 CS8422 System Features General Description The CS8422 is a 24-bit, high-performance, monolithic CMOS stereo asynchronous sample rate converter with SPI or IC Software Mode and Stand-Alone an integrated digital audio interface receiver that de- Hardware Mode codes audio data according to the EIAJ CP1201, IEC- 60958, AES3, and S/PDIF interface standards. Flexible 3-wire Digital Serial Audio Input Port Audio data is input through the digital interface receiver or a 3-wire serial audio input port. Audio is output Dual Serial Audio Output Ports with through one of two 3-wire serial audio output ports. Se- Independently Selectable Data Paths rial audio data outputs can be set to 24, 20, 18, or 16-bit word-lengths. Data into the digital interface receiver and serial audio input port can be up to 24-bits long. Input Master or Slave Mode Operation for all Serial and output data can be completely asynchronous, syn- Audio Ports chronous to an external clock through XTI, or synchronous to the recovered master clock. Time Division Multiplexing (TDM) Mode The CS8422 can be controlled through the control port in Software Mode or in a Stand-Alone Hardware Mode. In Software Mode, the user can control the device Integrated Oscillator for use with External through an SPI or IC control port. Crystal Target applications include digital recording systems (DVD-R/RW, CD-R/RW, PVR, DAT, MD, and VTR), dig- Four General-purpose Output Pins (GPO) ital mixing consoles, high-quality D/A, effects processors, and computer audio systems. +3.3 V Analog Supply (VA) The CS8422 is available in a space-saving QFN pack- age in Commercial (-40 C to +85 C) grade. The +1.8 V to 5.0 V Digital Interface (VL) CDB4822 is also available for device evaluation and im- plementation suggestions. Please refer to Ordering Information on page 81 for complete details. Space-saving 32-pin QFN Package 2 DS692F2