Cirrus-logic AN333 Uživatelský manuál

Copyright  Cirrus Logic, Inc. 2014(All Rights Reserved)http://www.cirrus.comAN333APR '14CS470xx Firmware User’s Manual: General Overview and Com

10 AN3334 Operating System (OS) Firmware Module 4 Operating System (OS) Firmware ModuleFigure 4-1. Unsolicited Read Command and Data WordsTable 4-1 de

AN333 11 4 Operating System (OS) Firmware ModuleTable 4-1. OS Firmware ManagerIndex Variable Description0x0000 KICKSTART Bit 16: 0/1 Disable/enable m

12 AN3334 Operating System (OS) Firmware Module 0x0003 SAMPLE_RATE† The host must set the sample rate variable to inform firmware modules of the sampl

AN333 13 4 Operating System (OS) Firmware Module0x003C GPIO_OE GPIO data direction register. Bits 31:0When Bit[i] is 1, pin GPIO[i] is configured as a

14 AN3334 Operating System (OS) Firmware Module 0x0059 SCP_CONTROL Post pre-kick-start mode of SCP communicationBits 2 1 00 0 0 => I2C Ma

AN333 15 4 Operating System (OS) Firmware Module0x0071 OUTPUT_APBSRC_FSI_SEL Bits 31:1 ReservedBit 0 FSI Select:0x0 - FSI = SPDIFRX_LRCLK0x1 - FSI = D

16 AN3334.1 Memory Configurations for IO_CONFIG (Index 0x0001) 4.1 Memory Configurations for IO_CONFIG (Index 0x0001)Table 4-2 shows the memory config

AN333 17 4.2 Details of Index 0x0001Table 4-5. Input Configurations versus Slot index for Setting Up Input Channel RemapConfigurable Input Channel Ma

18 AN3334.2 Details of Index 0x0001 Bits 15:0 I/O Configuration4000: 4-channel ADC + 2-channel S/PDIF Rx Input1 ADC1 left channel 02 ADC1 right channe

AN333 19 4.3 OS Manager in DSP Composer4.3 OS Manager in DSP ComposerMost configuration information described in Section 4 can be controlled in DSP Co

2 AN3331 Document Strategy 1 Document StrategyThe CS470xx has been designed with inherently flexibility in terms of firmware usage. Each instance of o

20 AN3334.4 Unsolicited Messages 4.4 Unsolicited MessagesIndex = 0xHHHH, data value = 0xhhhhhhhhNo Write Message. No Read Request.Unsolicited Read Res

AN333 21 4.4 Unsolicited MessagesTable 4-7. Autodetect MessagesIndex Variable Description0x0000 AUTODETECT_RESPONSE Bit 31 = Decodable_Stream_Flag= 0

22 AN3335 Audio Manager Firmware Module 5 Audio Manager Firmware ModuleThe Audio Manager Firmware module provides the ability for the microcontroller

AN333 23 5 Audio Manager Firmware Module0x000F CHAN_13_TRIM† 0x00000000 – 0x80000000 (0.0 to 1.0)Volume trim for channel 13 (Application Dependent Cha

24 AN3335.1 Audio Manager in DSP Composer Environment 5.1 Audio Manager in DSP Composer EnvironmentDSP Composer can control all configuration informa

AN333 25 6 PCM Firmware Module6 PCM Firmware ModuleThe PCM firmware module provides routing and control functions for stereo and multichannel PCM inpu

26 AN3336.2 PCM Manager in DSP Composer 6.2 PCM Manager in DSP ComposerAll configuration information described in Section 6.1 can be controlled in DS

AN333 27 6.3 PCM Module Notes6.3 PCM Module NotesThe following are the possible PCM input modes:• Stereo Mode: Stereo PCM into DAI_D4. 2 Channel Mode

28 AN3338 Document Revisions 8 Document RevisionsRevision Date ChangesRC12 February, 2012 Updated description of 0x0045 and 0x0046 in Table 4-1. Updat

AN333 3 2 Overview2 OverviewThe firmware that runs on this device expects a stereo or multichannel PCM input source. This section describes the overla

4 AN3332.2 Download Sequence Figure 2-1. Download SequenceStep 2 (optional): Download a matrix processing module(Examples: Crossbar Mixer, Pro Logic I

AN333 52.3 Firmware Modules and Associated Application NotesTable 2-1. Firmware Module Read and Write Addresses with Associated Application Note Ref

6 AN333Virtual Processor Overlay (continued)Cirrus Virtualization Technology (CVT) - Virtualizer Processor Module (AN333VPMN)09 0xC100HHHH 0xhhhhhhhh

7 AN333Post-processing Overlays (continued)SPP (Standard Post Processing) in DSP Composer Module Processing Order:1. Tone Control2. BM3. Delay4. AMSee

8 AN3333 Firmware Messaging 3 Firmware MessagingWhile using the CS470xx, it is necessary to communicate with the DSP in order to control or monitor th

AN333 9 3.1 Communication OverviewFig. 3-2 provides the format of a solicited read message:Figure 3-2. Read Command Data WordFig. 3-3 provides the for