CS4298 datasheet(49/52 Pages) CIRRUS

49 / 52 page

CS4298

DS315PP2

9. PARAMETER AND TERM DEFINITIONS

AC ’97 Specification

Refers to the Audio Codec ‘97 Component Specification Ver 2.1 published by Intel®

Corporation [].

AC ’97 Controller or Controller

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

DC ’97 for Digital Controller ‘97 [].

AC ’97 Registers or Codec 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 Codec. “ADCs” refers to the stereo pair of

Analog-to-Digital converters.

DAC

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

to-Analog converters.

SRC

Sample Rate converter. Converts data derived at one sample rate to a differing sample rate.

Codec

Refers to the chip containing the ADCs, DACs, and analog mixer. In this data sheet, the Codec

is the CS4297A9.

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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