Cirrus-logic CRD49530-USB Manual do Utilizador descarregar pdf (Página 32)

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

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

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

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