CS42428 Datasheet, PDF (17/67 Pages) Cirrus Logic – 114 dB, 192kHz 8-Ch CODEC WITH PLL

CS42428
bits in the register “Interface Formats (address 04h)” on page 34. The serial audio data is presented in 2's
complement binary form with the MSB first in all formats.
DAC_SDIN1, DAC_SDIN2, DAC_SDIN3 and DAC_SDIN4 are the serial data input pins supplying the
internal DAC. ADC_SDOUT, the ADC data output pin, carries data from the two internal 24-bit ADCs
and, when configured for one-line mode, up to four additional ADC channels attached externally to the
signals ADCIN1 and ADCIN2 (typically two CS5361 stereo ADCs). When operated in One Line Data
Mode, 6 channels of DAC data are input on DAC_SDIN1, two additional DAC channels on DAC_SDIN4,
and 6 channels of ADC data are output on ADC_SDOUT. Table 5 outlines the serial port channel alloca-
tions.
Serial Inputs / Outputs
DAC_SDIN1 left channel DAC #1
right channel DAC #2
one line mode DAC channels 1,2,3,4,5,6
DAC_SDIN2
left channel DAC #3
right channel DAC #4
one line mode not used
DAC_SDIN3
left channel DAC #5
right channel DAC #6
one line mode not used
DAC_SDIN4 left channel DAC #7
right channel DAC #8
one line mode DAC channels 7,8
ADC_SDOUT left channel ADC #1
right channel ADC #2
one line mode ADC channels 1,2,3,4,5,6
ADCIN1
left channel External ADC #3
right channel External ADC #4
ADCIN2
left channel External ADC #5
right channel External ADC #6
Table 5. Serial Audio Port Channel Allocations
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