CS4270_06 Datasheet, PDF (2/49 Pages) Cirrus Logic – 24-Bit, 192 kHz Stereo Audio CODEC

Stand-Alone Mode Feature Set
 System Features
– Serial Audio Port Master or Slave Operation
– Single-, Double-, or Quad-Speed Operation
 D/A Features
– Auto-Mute on Static Samples
– 44.1 kHz 50/15 µs De-emphasis Available
– Selectable Serial Audio Interface Formats
• Left-Justified up to 24-bit
• I²S up to 24-bit
 A/D Features
– High-Pass Filter
– Selectable Serial Audio Interface Formats
• Left-Justified up to 24-bit
• I²S up to 24-bit
Software Mode Feature Set
 System Features
– Serial Audio Port Master or Slave Operation
– Internal Digital Loopback Available
 D/A Features
– Selectable Auto-mute
– 44.1-kHz De-emphasis Filters
– Configurable Muting Controls
– Volume Control
– Selectable Serial Audio Interface Formats
• Left-Justified up to 24-bit
• I²S 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
• I²S up to 24-bit
CS4270
General Description
The CS4270 is a high-performance, integrated audio
CODEC. The CS4270 performs stereo analog-to-digital
(A/D) and digital-to-analog (D/A) conversion of up to
24-bit serial values at sample rates up to 216 kHz.
Standard 50/15 µs de-emphasis is available for sam-
pling rates of 44.1 kHz for compatibility with digital audio
programs mastered using the 50/15 µs pre-emphasis
technique.
Integrated level translators allow easy interfacing be-
tween the CS4270 and other devices operating over a
wide range of logic levels.
Independently addressable high-pass filters are avail-
able for the right and left channel of the A/D. This allows
the A/D to be used in a wide variety of applications
where one audio channel and one DC measurement
channel is desired.
The CS4270 is available in a 24-pin TSSOP package in
both Commercial (-10° to +70° C) and Automotive
grades (-40° to +85° C). The CDB4270 Customer Dem-
onstration board is also available for device evaluation
and implementation suggestions. Please refer to
“Ordering Information” on page 47 for complete order-
ing information.
The CS4270’s wide dynamic range, negligible distor-
tion, and low noise make it ideal for applications such as
DVD-recorders, digital televisions, set-top boxes, ef-
fects processors, and automotive audio systems.
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