CDB42406
1.7.2d
Setup 6
An external DSP connected to DSP I/O HDR, masters all clocks for the ADC/DAC. For
implementation of this setup option, set DIP switch S4 (SW[3:0]) to ‘0110’b.
CS8416
CS42406
RMCK
MCLK
OMCK
AUDIO
MCLK
DAC_LRCK/
DAC_SCLK
OLRCK/
OSCLK
DAC_SDINx
SDOUT
ADC_SDOUT
ADC_LRCK/
ADC_SCLK
CS8406
OMCK
ILRCK/
ISCLK
SDIN
DSP I/O
HDR
DSP_MCLK
DSP_DAC_LRCK/
DSP_DAC_SCLK
DSP_SDINx
DSP_ADC_LRCK/
DSP_ADC_SCLK
DSP_SDOUT
Figure 7. Digital Loopback - Setup 6
1.7.3 DSP Routing
There are 6 different setup options for routing MCLK, LRCK and SCLK for DSP control.
These options allow either shared or independent control over the subclocks for the DAC
and ADC. The user may also choose between 2 different MCLK sources.
10
CIRRUS [ CIRRUS LOGIC ]
