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CS42418_05 Datasheet, PDF (31/73 Pages) Cirrus Logic – 110 dB, 192 kHz 8-Ch Codec with PLL
4.5.4 One-Line Mode (OLM) Configurations
CS42418
4.5.4.1 OLM Config #1
One-Line Mode Configuration #1 can support up to 8 channels of DAC data, and 6 channels of ADC data.
This is the only configuration which will support up to 24-bit samples at a sampling frequency of 48 kHz on
all channels for both the DAC and ADC.
Register / Bit Settings
Functional Mode Register (addr = 03h)
Set DAC_FMx = ADC_FMx = 00,01,10
Set ADC_CLK_SEL = 0
Interface Format Register (addr = 04h)
Set DIFx bits to proper serial format
Set ADC_OLx bits = 00,01,10
Set DAC_OLx bits = 00,01,10
Misc. Control Register (addr = 05h)
Set DAC_SP M/S = 1
Set ADC_SP M/S = 1
Set EXT ADC SCLK = 0
Description
DAC_LRCK must equal ADC_LRCK; sample rate conversion not supported
Configure ADC_SDOUT to be clocked from the DAC_SP clocks.
Select the digital interface format when not in One-Line Mode
Select ADC operating mode, see table below for valid combinations
Select DAC operating mode, see table below for valid combinations
Configure DAC Serial Port to Master Mode.
Configure ADC Serial Port to Master Mode.
Identify external ADC clock source as SAI Serial Port.
ADC Mode
DAC Mode
Not One-Line Mode
One-Line Mode #1
DAC_SCLK=64Fs
Not One- DAC_LRCK=SSM/DSM/QSM
Line Mode
DAC_SCLK=128Fs
DAC_LRCK=SSM/DSM
ADC_SCLK=64Fs
ADC_LRCK=DAC_LRCK
One-Line
Mode #1
DAC_SCLK=128Fs
DAC_LRCK=SSM/DSM
ADC_SCLK=64Fs
ADC_LRCK=DAC_LRCK
DAC_SCLK=128Fs
DAC_LRCK=SSM/DSM
ADC_SCLK=64Fs
ADC_LRCK=DAC_LRCK
One-Line
Mode #2
DAC_SCLK=256Fs
DAC_LRCK=SSM
ADC_SCLK=64Fs
ADC_LRCK=DAC_LRCK
not valid
One-Line Mode #2
not valid
not valid
DAC_SCLK=256Fs
DAC_LRCK=SSM
ADC_SCLK=64Fs
ADC_LRCK=DAC_LRCK
LRCK
SCLK
MCLK
SDOUT1
SDOUT2
CS5361
CS5361
MCLK
RMCK
ADCIN1
ADCIN2
64Fs
ADC_SCLK
ADC_LRCK
DAC_SCLK
DAC_LRCK
ADC_SDOUT
64Fs,128Fs, 256Fs
ADC Data
SCLK_PORT1
LRCK_PORT1
SDIN_PORT1
DAC_SDIN1
DAC_SDIN2
DAC_SDIN3
DAC_SDIN4
CS42418
SCLK_PORT2
LRCK_PORT2
SDOUT1_PORT2
SDOUT2_PORT2
SDOUT3_PORT2
SDOUT4_PORT2
DIGITAL AUDIO
PROCESSOR
Figure 17. OLM Configuration #1
DS603F1
31