Cirrus Logic CS4970x4 - Manual (Page 154)

Introduction
CS4953x4/CS4970x4 System Designer’s Guide
DS810UM6 Copyright 2013 Cirrus Logic, Inc C-1
Appendix C
Loading/Unloading Firmware Modules
C.1 Introduction
Appendix C describes how to load and unload various firmware modules in DSP Condenser. This occurs
the host changes concurrency mode(s). See
Section 7.4.2.1, “Using DSP Condenser to Change/Load
Firmware Modules” on page 7-10 for more detailed information on loading and unloading firmware
modules. Many of the firmware decoder modules mentioned in this chapter require a license from the
vendor and cannot be downloaded to the CS497xx device without a license. Contact your Cirrus Logic
Field Application Engineer (FAE) for licensing requirements for the third-party firmware mentioned here.
Note: In the following examples, “UCMD” command is used to send command to the CS497xx
Evaluation Board. In the customer’s system, the host processor does not need to preface the
command with “UCMD.”
C.1.1 DTS 96/24
™
and DTS-ES
™
See the Cirrus Logic application note, AN246DB for a complete description of the DTS 96/24 firmware
module. and AN246DC for the DTS-ES module.
C.1.1.1 Loading DTS 96/24 Decoder
The host commands necessary to load the DTS 96/24 decoder to output decoded audio streams at Fs 96
kHz are.
UCMD Ef00000000000100 # Set configuration lock bit
UCMD Ef000007xxxx00yy # Change decoder mode
UCMD Ef00000500000004 # Change output Fs
UCMD Ef00000000000001 # Change to new configuration
X= dts_es decoder mode with DTS96/24
™
enabled, yy= dts_es uld id
C.1.1.2 Switching to DTS-ES from DTS 96/24 Decoder
The host commands necessary to switch back to DTS-ES from DTS96/24 are:
UCMD Ef00000000000100
UCMD Ef000007000x00yy
UCMD Ef00000500000000
UCMD Ef00000000000001
X= dts_es mode (96/24 not enabled), yy= dts_es uld id
C.1.2 DTS-ES Matrix and DTS Neo6
™
See the Cirrus Logic application note, AN246DC for a complete description of the DTS-ES firmware
module. and AN246MPB for the DTS Neo6 module.