CS42418 datasheet(17/67 Pages) CIRRUS

17 / 67 page

CS42418

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

right channel

one line mode

DAC #1

DAC #2

DAC channels 1,2,3,4,5,6

DAC_SDIN2

left channel

right channel

one line mode

DAC #3

DAC #4

not used

DAC_SDIN3

left channel

right channel

one line mode

DAC #5

DAC #6

not used

DAC_SDIN4

left channel

right channel

one line mode

DAC #7

DAC #8

DAC channels 7,8

ADC_SDOUT

left channel

right channel

one line mode

ADC #1

ADC #2

ADC channels 1,2,3,4,5,6

ADCIN1

left channel

right channel

External ADC #3

External ADC #4

ADCIN2

left channel

right channel

External ADC #5

External ADC #6

Table 5. Serial Audio Port Channel Allocations

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