CS4227 Datasheet, PDF (30/36 Pages) Cirrus Logic – Six Channel, 20-Bit Codec

CS4227
Analog Inputs
AIN1L, AIN1R - Left and Right Channel Mux Input 1
Analog signal input connections for the right and left channels for multiplexer input 1.
AIN2L, AIN2R - Left & Right Channel Mux Input 2
Analog signal input connections for the right and left channels for multiplexer input 2.
AIN3L, AIN3R - Left & Right Channel Mux Input 3
Analog signal input connections for the right and left channels for multiplexer input 3.
AINAUX - Auxiliary Line Level Input
Analog signal input for the mono A/D converter.
Analog Outputs
AOUT1, AOUT2, AOUT3, AOUT4, AOUT5, AOUT6 - Audio Outputs
The analog outputs from the 6 D/A converters. Each output can be independently controlled for output
amplitude.
CMOUT - Common Mode Output
This common mode voltage output may be used for level shifting when DC coupling is desired. The load
on CMOUT must be DC only, with an impedance of not less than 50 kΩ. CMOUT should be bypassed
with a 1.0 µF to AGND.
Digital Audio Interface Signals
SDIN1 - Serial Data Input 1
Digital audio data for the DACs 1 and 2 is presented to the CS4227 on this pin. This pin is also used for
one-line data input modes.
SDIN2 - Serial Data Input 2
Digital audio data for the DACs 3 and 4 is presented to the CS4227 on this pin.
SDIN3 - Serial Data Input 3
Digital audio data for the DACs 5 and 6 is presented to the CS4227 on this pin.
SDOUT1- Serial Data Output 1
Digital audio data from the 20-bit stereo audio ADCs is output from this pin. When IS = 1 or 2,
DATAAUX is output on SDOUT1. This pin is also used for one line data output modes.
SDOUT2 - Serial Data Output 2
Digital audio data from the mono audio ADC is output from this pin. When IS = 2, the stereo audio
ADC's are output from this pin
SCLK - DSP Serial Port Clock I/O
SCLK clocks digital audio data into the DACs via SDIN1/2/3, and clocks data out of the ADCs on
SDOUT1/2. Active clock edge depends on the DSCK bit.
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