Cirrus-logic CS48LV13 Manuel d'utilisateur

Copyright  Cirrus Logic, Inc. 2014(All Rights Reserved)http://www.cirrus.comDS1057F1FEB ‘14Ultralow Power HD Voice Processors,Featuring SoundClear® T

DS1057F1 10 3.9 Automatic Level Control (ALC)3.9 Automatic Level Control (ALC)Tx voice level can vary greatly based on talker loudness, product dista

11 DS1057F13.13 Speech DSP Chain 3.13 Speech DSP Chain The CS48LV13 includes Cirrus Logic ASR Enhance preprocessor that removes noise impacting ASR e

DS1057F1 12 3.15 Power ManagementThe serial control port also includes a pin for flow control of the communications interface (BUSY/I2C_SELECT) and a

13 DS1057F14 Characteristics and Specifications • Multi-mic noise reduction• Single-mic noise reduction• Audio detection and classification• AEC, incl

DS1057F1 14 4.3 Power Supply Characteristics—1.0 V Power Dissipation4.3 Power Supply Characteristics—1.0 V Power DissipationTest Conditions (unless o

15 DS1057F14.5 Thermal Characteristics 4.5 Thermal Characteristics4.6 Digital Interface Specifications and CharacteristicsTest Conditions (unless oth

DS1057F1 16 4.7 Switching Characteristics—RESET4.7 Switching Characteristics—RESETFigure 4-2. RESET Timing at Power-OnFigure 4-3. RESET Timing after P

17 DS1057F14.9 Switching Characteristics—Internal Clock 4.9 Switching Characteristics—Internal Clock4.10 Switching Characteristics—Serial Control Por

DS1057F1 18 4.11 Switching Characteristics—Serial Control Port—I2C Slave ModeFigure 4-5. Serial Control Port—SPI Slave Mode Timing4.11 Switching Chara

19 DS1057F14.12 Switching Characteristics—Digital Audio Slave Input Port Figure 4-6. Serial Control Port—I2C Slave Mode Timing4.12 Switching Character

DS1057F1 2 CS48LV13 Block DiagramSoundClear Voice™ Features• Flexible and tunable enabling freedom in product ID, transducer placement and selection•

DS1057F1 20 4.13 Switching Characteristics—Digital Audio Output Port4.13 Switching Characteristics—Digital Audio Output PortFigure 4-8. Digital Audio

21 DS1057F15 Pin Descriptions 5 Pin DescriptionsTop-Down (Through-Package)View 20-Ball WLCSP PackageA4A3A2A1B4B3B2B1DAO_D1DAI_D2 VDVLDAO_D2C2C1D2D1C4

DS1057F1 22 5 Pin Descriptions Pin Name CSP Ball#QFN Pin#Pin FunctionsDAO_D1 A1 19 Digital Audio Data Output 1 (Host/Tx/Uplink) • (O) DAO output 1 fo

23 DS1057F15.1 I/O Pin Characteristics 5.1 I/O Pin CharacteristicsInput and output levels and associated power supply voltage are shown in Table 5-1.

24 DS1057F16 Package Dimensions 6 Package DimensionsTable 6-1. WLCSP Package DimensionSymbol Description DimensionsA Total thickness 0.495 ±0.04S Waf

25 DS1057F16 Package Dimensions 7. Controlling dimensions are in millimeters. 8. Dimensioning and tolerancing per ASME Y 14.5M.9. Dimension “b” applie

DS1057F1 26 7 Ordering Information1. Controlling dimensions are in millimeters.2. Dimensioning and tolerancing per ASME Y 14.5M.3. This drawing confor

3 DS1057F1 Cirrus Logic Speech Features(CS48LV13 Only)• ASR Enhance preprocessor for ASR engines—Improves speech command recognition of ASR engines i

DS1057F1 4 General DescriptionThe CS48LV12 and CS48LV13 ultralow power voice processors feature Cirrus Logic’s patented SoundClear® technology to pro

5 DS1057F11 Documentation 1 DocumentationThis document describes the CS48LV12 and CS48LV13 HD voice processors. When evaluating or designing a system

DS1057F1 6 2.1 LicensingA key feature of both products that enables ease of implementation, quick time to market and performance optimized to a partic

7 DS1057F13.1 Cirrus Logic 32-bit DSP Core Figure 3-2. CS48LV13 Block Diagram3.1 Cirrus Logic 32-bit DSP CoreThe core is a high-performance, 32-bit,

DS1057F1 8 3.3 Tx Voice DSP ChainThe CS48LV13 includes two additional processing groups:5. Speech DSP Chain6. Advanced Audio Playback DSP ChainCirrus

9 DS1057F13.6 Acoustic Echo Cancellation (AEC) adjustments to compensate for changes in device orientation. This results in better off-axis performanc