CS493254-CLZ View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS493254-CLZ

Multi-Standard Audio Decoder Family

Cirrus Logic 

CS49300 Family DSP

9. HARDWARE CONFIGURATION

After download or soft reset, and before

kickstarting the application (please see the Audio

Manager in the Application Messaging Section of

any Application Code User’s Guide for more

information on kickstarting), the host has the option

of changing the default hardware configuration.

Hardware configuration messages are used to

physically reconfigure the hardware of the audio

decoder, as in enabling or disabling address

checking for the serial communication port.

Hardware configuration messages are also used to

initialize the data type (i.e., PCM or compressed)

and format (e.g., I2S, left justified, etc.) for digital

data inputs, as well as the data format and clocking

options for the digital output port.

In general, the hardware configuration can only be

changed immediately after download or after soft

reset. However, some applications provide the

capability to change the input ports without

affecting other hardware configurations after

sending a special Application Restart message

(please see the Audio Manager in any Application

Code User’s Guide to determine whether the

Application Restart message is supported).

Section 11.4 at the end of this chapter will describe

how to construct a hardware configuration

message.

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