CS42406
Stand Alone Mode Feature Set
System features
– ADC serial audio port master or slave
operation
– Independent ADC and DAC reset/power-down
– 256x or 384x MCLK/LRCK ratio selectable
General Description
The CS42406 is a low cost, integrated audio CO-
DEC. The CS42406 performs stereo analog-to-
digital (A/D) conversion and six channels of digital-
to-analog (D/A) conversion of up to 24-bit serial
values at sample rates up to 200 kHz.
The D/A offers a volume control that operates with
a 1 dB step size. It incorporates selectable soft
ramp and zero crossing transition functions to elim-
inate clicks and pops.
The D/A’s integrated digital mixing functions allow
a variety of output configurations ranging from a
channel swap to a stereo-to-mono down-mix.
Standard 50/15
µs
de-emphasis is available for
sampling rates of 32, 44.1, and 48 kHz for compat-
ibility with digital audio programs mastered using
the 50/15
µs
pre-emphasis technique.
Integrated level translators allow easy interfacing
between the CS42406 and other devices operating
over a wide range of logic levels.
High-pass filters are available for the right and left
channel of the A/D. This allows the A/D to remove
unwanted DC offsets.
The CS42406’s wide dynamic range, negligible
distortion, and low noise make it ideal for applica-
tions such as A/V receivers, DVD receivers, and
set-top box systems.
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 data
I²S up to 24-bit data
Right justified, 16-bit data
Right justified, 24-bit data
A/D features
– Serial audio port master or slave operation
– Auto-mode select in slave mode
– High-pass filter
– Selectable serial audio interface formats
Left justified up to 24-bit
I²S up to 24-bit data
Control Port Mode Feature Set
D/A features
– Selectable auto-mute
– Selectable 32, 44.1, and 48 kHz de-emphasis
filters
– Configurable ATAPI mixing functions
– Configurable volume and muting controls
– Selectable serial audio interface formats
Left justified up to 24-bit
I²S up to 24-bit
Right justified 16, 18, 20, and 24-bit
ORDERING INFORMATION
CS42406-CQZ -10° to 70° C
48-pin LQFP
CDB42406
Evaluation Board
2
DS614PP5
CIRRUS [ CIRRUS LOGIC ]
