Cirrus Logic CDB470xx - Manual (Page 45)

Running the ADC In / DAC Out Example Application
CDB47xxx User’s Manual
DS886DB11 Copyright 2014 Cirrus Logic, Inc 4-10
4.2.5.3 I
2
S Audio Input Output
To output audio data from the DSP via I
2
S, drag the Audio In block to the canvas and choose an input
combination that includes I
2
S as shown in Figure 4-10 . Draw wires from the Output Remap block to the
Audio Out block for the desired mappings.
Figure 4-10. Selecting I2S Outputs using Device Properties Dialog
4.2.6 Changing Serial Control Protocol (I
2
C

or SPI

) / Flash Type
The CDB47xxx is designed to communicate using either I
2
C

or SPI

protocols. In order to change the
communication mode in the DSP Composer application, go to the menu bar and select File Properties,
which brings up the Project Properties dialog. Click on the Advanced button, as illustrated in
Figure 4-11 ,
in order to set the Master Boot Flash type or put a specified I/O pin into a High-Z state. The Flash Type
pull-down menu is used to select which Flash will be used for a Master Boot. The checkbox, when
checked, puts the corresponding pin into the high-impedance state. See
Section 5.1.1 for more details.