ZHCSPD7A
April 2022 – September 2022
PCMD3140-Q1
PRODUCTION DATA
1
特性
2
应用
3
说明
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
Timing Requirements: PDM Digital Microphone Interface
6.10
Switching Characteristics: PDM Digial Microphone Interface
6.11
Timing Diagrams
6.12
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
接收文档更新通知
11.3
支持资源
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
术语表
12
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RTE|20
MPQF596
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcspd7a_oa
zhcspd7a_pm
1
特性
4 通道 PDM 麦克风同步转换
PDM 输入至 TDM 或 I
2
S 输出转换器性能:
127 dB 动态范围 (DR),带高性能 5 阶 PDM 输入
117 dB 动态范围 (DR),带高性能 4 阶 PDM 输入
通道相加模式,DR 性能,带高性能 4 阶 PDM 输入:
120 dB,2 通道相加
可编程 PDM 时钟输出:
768 kHz 至 6.144 MHz
可编程输出采样率 (f
S
):
8 kHz 至 768 kHz
可编程通道设置:
数字音量控制:–100 dB 至 27 dB
增益校准:0.1 dB 分辨率
相位校准:163 ns 分辨率
麦克风偏置或电源电压生成
话音激活检测 (VAD)
低延迟信号处理滤波器选择
可编程 HPF 和双二阶数字滤波器
I
2
C 控制
集成高性能音频 PLL
自动时钟分频器设置配置
音频串行数据接口:
格式:TDM、I
2
S 或左对齐 (LJ)
字长:16 位、20 位、24 位或 32 位
主/从接口
单电源运行:3.3V 或 1.8V
I/O 电源运行:3.3V 或 1.8V
1.8V 电源电压下的功耗:
16 kHz 采样率下为 2.8 mW/通道
48 kHz 采样率下为 3.6 mW/通道