CS4297 datasheet(10/46 Pages) CIRRUS

10 / 46 page

DS242F5

CS4297

CrystalClear™ SoundFusion™ Audio Codec ’97

PARAMETER AND TERM DEFINITIONS

AC’97 Specification

Refers to the Audio Codec ‘97 Component Specification Ver 1.03 published by Intel®

Corporation [1].

AC’97 Controller

Refers to the control chip which interfaces to the CS4297’s AC-Link. This has been also called

“DC’97” [1].

‘set’

Refers to a digital value of Vcc, “1”, or “high”.

‘clear’ or ‘cleared’

Refers to a digital value of GND, “0” or “low”.

AC’97 Registers

Refers to the 64-field register map defined in the AC’97 Specification.

ADC

Refers to a single Analog-to-Digital converter in the CS4297. “ADCs” refers to the stereo pair

of Analog-to-Digital converters.

DAC

A single Digital-to-Analog converter in the CS4297. “DACs” refers to the stereo pair of

Digital-to-Analog converters.

Codec

Refers to the set of ADCs, DACs, and Analog mixer portions of the CS4297.

FFT

Fast Fourier Transform.

Resolution

The number of bits in the output words to the DACs, and in the input words to the ADCs.

Differential Nonlinearity

The worst case deviation from the ideal code width. Units in LSB.

dB FS A

dB FS is defined as dB relative to full-scale. The “A” indicates an A weighting filter was used.

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