SBASA64A
December 2020 – June 2021
PCMD3140
PRODUCTION DATA
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements: I2C Interface
6.7
Switching Characteristics: I2C Interface
6.8
Timing Requirements: TDM, I2S or LJ Interface
6.9
Switching Characteristics: TDM, I2S or LJ Interface
6.10
Timing Requirements: PDM Digital Microphone Interface
6.11
Switching Characteristics: PDM Digial Microphone Interface
6.12
Timing Diagrams
6.13
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Serial Interfaces
7.3.1.1
Control Serial Interfaces
7.3.1.2
Audio Serial Interfaces
7.3.1.2.1
Time Division Multiplexed Audio (TDM) Interface
7.3.1.2.2
Inter IC Sound (I2S) Interface
7.3.1.2.3
Left-Justified (LJ) Interface
7.3.1.3
Using Multiple Devices With Shared Buses
7.3.2
Phase-Locked Loop (PLL) and Clock Generation
7.3.3
Reference Voltage
7.3.4
Microphone Bias
7.3.5
Digital PDM Microphone Record Channel
7.3.6
Signal-Chain Processing
7.3.6.1
Programmable Digital Volume Control
7.3.6.2
Programmable Channel Gain Calibration
7.3.6.3
Programmable Channel Phase Calibration
7.3.6.4
Programmable Digital High-Pass Filter
7.3.6.5
Programmable Digital Biquad Filters
7.3.6.6
Programmable Channel Summer and Digital Mixer
7.3.6.7
Configurable Digital Decimation Filters
7.3.6.7.1
Linear Phase Filters
7.3.6.7.1.1
Sampling Rate: 7.35 kHz to 8 kHz
7.3.6.7.1.2
Sampling Rate: 14.7 kHz to 16 kHz
7.3.6.7.1.3
Sampling Rate: 22.05 kHz to 24 kHz
7.3.6.7.1.4
Sampling Rate: 29.4 kHz to 32 kHz
7.3.6.7.1.5
Sampling Rate: 44.1 kHz to 48 kHz
7.3.6.7.1.6
Sampling Rate: 88.2 kHz to 96 kHz
7.3.6.7.1.7
Sampling Rate: 176.4 kHz to 192 kHz
7.3.6.7.1.8
Sampling Rate: 352.8 kHz to 384 kHz
7.3.6.7.1.9
Sampling Rate: 705.6 kHz to 768 kHz
7.3.6.7.2
Low-Latency Filters
7.3.6.7.2.1
Sampling Rate: 14.7 kHz to 16 kHz
7.3.6.7.2.2
Sampling Rate: 22.05 kHz to 24 kHz
7.3.6.7.2.3
Sampling Rate: 29.4 kHz to 32 kHz
7.3.6.7.2.4
Sampling Rate: 44.1 kHz to 48 kHz
7.3.6.7.2.5
Sampling Rate: 88.2 kHz to 96 kHz
7.3.6.7.2.6
Sampling Rate: 176.4 kHz to 192 kHz
7.3.6.7.3
Ultra-Low-Latency Filters
7.3.6.7.3.1
Sampling Rate: 14.7 kHz to 16 kHz
7.3.6.7.3.2
Sampling Rate: 22.05 kHz to 24 kHz
7.3.6.7.3.3
Sampling Rate: 29.4 kHz to 32 kHz
7.3.6.7.3.4
Sampling Rate: 44.1 kHz to 48 kHz
7.3.6.7.3.5
Sampling Rate: 88.2 kHz to 96 kHz
7.3.6.7.3.6
Sampling Rate: 176.4 kHz to 192 kHz
7.3.6.7.3.7
Sampling Rate: 352.8 kHz to 384 kHz
7.3.7
Voice Activity Detection (VAD)
7.3.8
Interrupts, Status, and Digital I/O Pin Multiplexing
7.4
Device Functional Modes
7.4.1
Sleep Mode or Software Shutdown
7.4.2
Active Mode
7.4.3
Software Reset
7.5
Programming
7.5.1
Control Serial Interfaces
7.5.1.1
I2C Control Interface
7.5.1.1.1
General I2C Operation
7.5.1.1.2
I2C Single-Byte and Multiple-Byte Transfers
7.5.1.1.2.1
I2C Single-Byte Write
7.5.1.1.2.2
I2C Multiple-Byte Write
7.5.1.1.2.3
I2C Single-Byte Read
7.5.1.1.2.4
I2C Multiple-Byte Read
7.6
Register Maps
7.6.1
Page 0 Registers
7.6.2
Page 1 Registers
7.6.3
Programmable Coefficient Registers
7.6.3.1
Programmable Coefficient Registers: Page 2
7.6.3.2
Programmable Coefficient Registers: Page 3
7.6.3.3
Programmable Coefficient Registers: Page 4
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Four-Channel Digital PDM Microphone Recording
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Example Device Register Configuration Script for EVM Setup
8.2.1.3
Application Curves
8.3
What to Do and What Not to Do
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Documentation Support
11.1.1
Related Documentation
11.2
Receiving Notification of Documentation Updates
11.3
Support Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
Mechanical, Packaging, and Orderable Information
8.2
Typical Application