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.
AU D IO
MCLK
CS8416
RMCK
O MCK
OLR C K/
OS CL K
S DO UT
CS8406
OMCK
ILR CK /
IS CL K
S D IN
CS42406
M CLK
D AC _LR CK /
DAC_SCL K
D AC _S DIN x
ADC_ LRCK/
ADC_ SCLK
A DC _S DO UT
DSP I/O
HDR
DSP_ MCL K
D SP _D AC _LR CK /
DSP_DAC_SCL K
D SP _S DIN x
D SP _A DC _LR CK /
DSP_ADC_SCL K
DSP_SDO UT
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.
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