MSM8909/MSM8209/MSM8208 Chipset Audio Hardware

MSM8909/MSM8209/MSM8208 Chipset Audio Hardware
Slide Number 2
Revision History
Slide Number 4
Introduction
Audio Codec System Overview
Codec Feature Comparison
Audio Codec Features (1 of 3)
Audio Codec Features (2 of 3)
Audio Codec Features (3 of 3)
Audio Inputs and Tx Processing
Audio Inputs and Tx Processing
Analog ECM-Type Microphone Inputs
MEMS-type Microphone Inputs
Digital Microphone Inputs
Factory Testing Digital Microphone
Multibutton Headset Control Features
Multibutton Headset Control Diagram
Audio Outputs and Rx Processing
Audio Outputs and Rx Processing
Analog Outputs – Earpiece
Analog Outputs – Headphones
Analog Outputs – Speaker Output
External 5 V Boost Option for Speaker Driver
External 5 V Boost Criteria for Speaker Driver
Class-AB EAR and Class-D Speaker – Two Transducers
Class-AB EAR and Class-D Speaker – Dual-output Single Transducer
Digital I/Os and Processing
Digital Codec Processing (Refer to Appendix for Details)
MSM8909 Digital Audio Interface
MSM8909 LPA and I2S Interfaces
Audio Codec Support Functions
Audio Codec Support Functions and Topic Overview
Clock Generation and Distribution
PDM Interface
Power Supply Circuits – MIC Bias
Power Supply Circuits – Charge Pump
Audio Codec External Components
PM8909 Codec ESD TVS Guidelines
PM8909 Codec Unused Pin Guidelines
Appendix A – System Level Details
Audio Codec System Diagram
Digital Processing Overview
Decimation Paths
Digital Mixing – IIR Mixer
Digital Mixing – DAC Mixers Type 1
Digital Mixing – DAC Mixers Type 2
Interpolation Filters (Rx paths)
Appendix B – Chipset Migration for Audio
Differences of PM8909 Codec Compared to PM8916 Codec
Implementation Differences on PM8909 Codec Compared to PM8916
Appendix C – Specific Design Topics
OCP Connection Attempts Setting
Recommendation TVS for ULT Audio to Prevent System Level ESD Issue
Using Two Transducers for High Output Power
Questions?