User guide

Host Activity

CS4953x4/CS4970x4 System Designer’s Guide

'81' correspond to the autodetection messages/response. For a description of autodetect messages, see

Section 7.3.7 “DSP_AUTODETECT_MSG”on page 7-4. Figure 8-21 shows the autodetect message for

silence.

8.9 Host Activity

The host carries out the following activities after a successful boot.

1. Flush the DSP message buffer by reading all outstanding messages.

2. Retrieve status information from the DSP using the DSP manager read commands set out in Table

7-5.

3. Send DSP Manager write commands to change concurrency mode if required. See examples of

write commands in Section 7.4.2.1 “Using DSP Condenser to Change/Load Firmware Modules”on

page 7-10 and in Appendix C, "Loading/Unloading Firmware Modules"

See the process flow for changing concurrency

modes in Figure 8-21.

1. Concurrency mode is the combination of firmware modules active at any one point in time.