Cirrus Logic CDB42448 - Manual (Page 20)

CDB42448
20 DS648DB2
Function:
This MUX selects the data lines from the ADC’s and the external ADC. The first 4 selections shown
in Table 7 comes directly from the data output lines. The last 4 selections are de-multiplexed from the
TDM stream of SDOUT1 (see Figure 5 on page 12).
5.4.3 OMCK/LRCK RATIO SELECT (OMCK 128/256 FS)
Default = 0
0 - 256 Fs
1 - 128 Fs
Function:
Selects the MCLK/LRCK ratio of the CS8406 transmitter.
5.4.4 LEFT-JUSTIFIED OR I ² S INTERFACE FORMAT (I ² S/LJ)
Default = 0
0 - Left Justified
1 - I
²
S
Function:
Selects either I
²
S or Left Justified interface format for the CS8406.
5.4.5 ADC OR TDM2PCM CLOCK SELECTION (T2P/ADC)
Default = 1
0 - ADC Sub-Clocks to CS8406
1 - TDMer Sub-Clocks to CS8406
Function:
Selects the clock source for the CS8406. When de-multiplexing the data on SDOUT1, the CS8406
will need to use the TDMer sub-clocks (see Figure 3 on page 10).
100 ADC1 (from ADC_SDOUT1)
101 ADC2 (from ADC_SDOUT1)
110 ADC3 (from ADC_SDOUT1)
111 EXT_ADC (from ADC_SDOUT1)
MUX[2:0] Data Selection
Table 7. Data to CS8406