Cirrus Logic CRD49530-USB - Manual (Page 32)

4-7 Copyright 2008 Cirrus Logic DS705RD3
Changing Audio Output Source
CRD49530-USB User’s Manual
4.4 Changing Audio Output Source
The audio output section of the CRD4930 is configured through the “Audio Out” block in DSP Composer,
this is done by right-clicking on the “Audio Out” block and selecting Device Properties, as illustrated in
Figure 4-8 .
Figure 4-8. CRD49530 Audio Out Properties
This resulting dialog allows the user to set the following parameters for the CS42448 DACs:
• Audio Data Format - I
2
S, LJ, etc.
• Output Sampling Frequency Range - Select the Fs range where 1FS = 32 kHz, 44.1 kHz, or 48 kHz,
2Fs = 64 kHz, 88.2 kHz, 96 kHz, 4FS= 128 kHz, 176.4 kHz, 192 kHz, etc.
• SPDIF Enable - Checking this box configures DAO for S/PDIF output rather than I
2
S.
4.4.1 DAO Output of CS4953xx
The digital audio output (DAO) of the CS4953xx is very flexible, making it compatible with a wide variety of
audio devices. This port can configured using the dialog box shown in
Figure 4-9 . Double-click on the
“Audio Out” block, then select the DAO block. Right-clicking the DAO block and selecting Device
Properties produces the DAO Properties dialog.
Figure 4-9. CRD49530 Digital Audio Output Properties