CS4270 24-Bit, 192-kHz Stereo Audio CODEC D/A Features A/D Features High Performance High Performance 105 dB Dynamic Range 105 dB Dynamic Range -95 dB THD+N -87 dB THD+N Multi-bit Conversion Selectable Serial Audio Interface Formats High-Pass Filter to Remove DC Offsets Left-Justified up to 24 bits Selectable Serial Audio Interface Formats IS up to 24 bits Left-Justified up to 24 bits Right-Justified 16, and 24 bits IS up to 24 bits Control Output for External Muting Single-Ended Input System Features Digital De-Emphasis Direct Interface with Logic Levels 1.8 V to 5 V Popguard Technology Internal Digital Loopback Multi-bit Conversion Stand-Alone or Serial Control Port Functionality Single-Ended Analog Architecture Digital Volume Control Supports all Audio Sample Rates from 4 kHz to 216 kHz Single-Ended Output 3.3- or 5-V Core Supply VLC VD VA 1.8 V to 5 V 3.3 V to 5 V 3.3 V to 5 V Software or Internal Voltage Level Stand-Alone Configuration Reference Configuration Translators Registers RST External Mute Mute Signals Control DAC Switch-Cap Volume Multi-bit Analog Out A Digital DAC and Control Modulator (Left) Analog Filter Serial Filter PCM Serial Audio Audio Input Input DAC Switch-Cap Volume Multi-bit Analog Out B Digital DAC and Control Modulator (Right) Analog Filter Filter ADC High Pass Switch-Cap Analog Input A Digital Filter (Left) ADC Serial Filter PCM Serial Audio Audio Output Output ADC High Pass Analog Input B Switch-Cap Digital Filter ADC (Right) Filter Copyright Cirrus Logic, Inc. 2010 AUGUST 10 (All Rights Reserved) CS4270 Stand-Alone Mode Feature Set General Description System Features The CS4270 is a high-performance, integrated audio CODEC. The CS4270 performs stereo analog-to-digital Master or Slave Serial Audio Interface (A/D) and digital-to-analog (D/A) conversion of up to Single-, Double-, or Quad-Speed Operation 24-bit serial values at sample rates up to 216 kHz. D/A Features Standard 50/15 s de-emphasis is available for sam- pling rates of 44.1 kHz for compatibility with digital audio Auto-Mute on Static Samples programs mastered using the 50/15 s pre-emphasis 44.1 kHz 50/15 s De-emphasis Available technique. Selectable Serial Audio Interface Formats Integrated level translators allow easy interfacing be- tween the CS4270 and other devices operating over a Left-Justified up to 24-bit wide range of logic levels. IS up to 24-bit Independently addressable high-pass filters are avail- able for the right and left channel of the A/D. This allows A/D Features the A/D to be used in a wide variety of applications High-Pass Filter where one audio channel and one DC measurement Selectable Serial Audio Interface Formats channel is desired. Left-Justified up to 24-bit The CS4270 is available in a 24-pin TSSOP package (-10 to +70 C). The CDB4270 Customer Demonstra- IS up to 24-bit tion board is also available for device evaluation and implementation suggestions. Please refer to Ordering Software Mode Feature Set Information on page44 for complete ordering information. System Features The CS4270s wide dynamic range, negligible distor- Master or Slave Serial Audio Interface tion, and low noise make it ideal for applications such as Single-, Double-, or Quad-Speed Operation DVD recorders, digital televisions, set-top boxes, and effects processors. Internal Digital Loopback Available D/A Features Selectable Auto-mute 44.1-kHz 50/15 s De-emphasis Available Configurable Muting Controls Volume Control Selectable Serial Audio Interface Formats Left-Justified up to 24-bit IS up to 24-bit Right-Justified 16, and 24-bit A/D Features Selectable High-Pass Filter or DC Offset Calibration Selectable Serial Audio Interface Formats Left-Justified up to 24-bit IS up to 24-bit 2 DS686F1