ZHCSMM8A December 2020 – June 2021 TLV320ADC3120
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
-
7 Specifications
- 7.1 Absolute Maximum Ratings
- 7.2 ESD Ratings
- 7.3 Recommended Operating Conditions
- 7.4 Thermal Information
- 7.5 Electrical Characteristics
- 7.6 Timing Requirements:?I2C Interface
- 7.7 Switching Characteristics: I2C Interface
- 7.8 Timing Requirements:?TDM, I2S or LJ Interface
- 7.9 Switching Characteristics: TDM, I2S or LJ Interface
- 7.10 Timing Requirements:?PDM Digital Microphone Interface
- 7.11 Switching Characteristics: PDM Digital Microphone Interface
- 7.12 Timing Diagrams
- 7.13 Typical Characteristics
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 Serial Interfaces
- 8.3.2 Phase-Locked Loop (PLL) and Clock Generation
- 8.3.3 Input Channel Configurations
- 8.3.4 Reference Voltage
- 8.3.5 Programmable Microphone Bias
- 8.3.6
Signal-Chain Processing
- 8.3.6.1 Programmable Channel Gain and Digital Volume Control
- 8.3.6.2 Programmable Channel Gain Calibration
- 8.3.6.3 Programmable Channel Phase Calibration
- 8.3.6.4 Programmable Digital High-Pass Filter
- 8.3.6.5 Programmable Digital Biquad Filters
- 8.3.6.6 Programmable Channel Summer and Digital Mixer
- 8.3.6.7
Configurable Digital Decimation Filters
- 8.3.6.7.1
Linear Phase Filters
- 8.3.6.7.1.1 Sampling Rate: 7.35 kHz to 8 kHz
- 8.3.6.7.1.2 Sampling Rate: 14.7 kHz to 16 kHz
- 8.3.6.7.1.3 Sampling Rate: 22.05 kHz to 24 kHz
- 8.3.6.7.1.4 Sampling Rate: 29.4 kHz to 32 kHz
- 8.3.6.7.1.5 Sampling Rate: 44.1 kHz to 48 kHz
- 8.3.6.7.1.6 Sampling Rate: 88.2 kHz to 96 kHz
- 8.3.6.7.1.7 Sampling Rate: 176.4 kHz to 192 kHz
- 8.3.6.7.1.8 Sampling Rate: 352.8 kHz to 384 kHz
- 8.3.6.7.1.9 Sampling Rate: 705.6 kHz to 768 kHz
- 8.3.6.7.2 Low-Latency Filters
- 8.3.6.7.3
Ultra-Low Latency Filters
- 8.3.6.7.3.1 Sampling Rate: 14.7 kHz to 16 kHz
- 8.3.6.7.3.2 Sampling Rate: 22.05 kHz to 24 kHz
- 8.3.6.7.3.3 Sampling Rate: 29.4 kHz to 32 kHz
- 8.3.6.7.3.4 Sampling Rate: 44.1 kHz to 48 kHz
- 8.3.6.7.3.5 Sampling Rate: 88.2 kHz to 96 kHz
- 8.3.6.7.3.6 Sampling Rate: 176.4 kHz to 192 kHz
- 8.3.6.7.3.7 Sampling Rate: 352.8 kHz to 384 kHz
- 8.3.6.7.1
Linear Phase Filters
- 8.3.7 Automatic Gain Controller (AGC)
- 8.3.8 Voice Activity Detection (VAD)
- 8.3.9 Digital PDM Microphone Record Channel
- 8.3.10 Interrupts, Status, and Digital I/O Pin Multiplexing
- 8.4 Device Functional Modes
- 8.5 Programming
- 8.6 Register Maps
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
8.3.1.3 Using Multiple Devices With Shared Buses
The device has many supported features and flexible options that can be used in the system to seamlessly connect the TLV320ADC3120 and any other audio device by sharing a single common I2C control bus and an audio serial interface bus. This architecture enables multiple applications to be applied to a system that require a microphone array for beam-forming operations, audio conferencing, noise cancellation, and so forth. Figure 8-13 shows a diagram of the TLV320ADC3120 and TLV320ADCx140 devices in a configuration where the control and audio data buses are shared.
Figure 8-13 Multiple
Devices With Shared Control and Audio Data BusesThe TLV320ADC3120 consists of the following features to enable seamless connection and interaction of multiple devices using a shared bus:
- I2C broadcast simultaneously writes to (or triggers) all TLV320ADC3120 and TLV320ADCx140 devices
- Supports up to 64 configuration output channel slots for the audio serial interface
- Tri-state feature (with enable and disable) for the unused audio data slots of the device
- Supports a bus-holder feature (with enable and disable) to keep the last driven value on the audio bus
- The GPIO1 or GPOx pin can be configured as a secondary output data lane for the audio serial interface
- The GPIO1 or GPIx pin can be used in a daisy-chain configuration of multiple devices
- Supports one BCLK cycle data latching timing to relax the timing requirement for the high-speed interface
- Programmable master and slave options for the audio serial interface
- Ability to synchronize the multiple devices for the simultaneous sampling requirement across devices