PCM1864-Based Circular Microphone Board (CMB) Reference Design
TIDA-01454
(ACTIVE)
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Key Document
Description
The PCM1864 circular microphone board (CMB) is a low-cost easy-to-use reference design for applications that require clear-spoken audio, such as voice triggering and speech recognition. This TI Design uses a microphone array to capture a voice signal, and converts it to a digital stream that can be used by DSP systems to extract clear audio from noisy environments.
Features
- Uses two PCM1864 4-channel audio ADCs to interface with eight microphone arrays to extract clear speaker voice from noisy environments
- EnergySense notification for signal presence and loss – central part of a low-power, high-performance audio solution
- Offers a complete system reference design using microphone array, TI-provided software, and evaluation module
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Schematic/Block Diagram
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Design Guide
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TI Devices (3)
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CAD/CAE symbols
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Step 3: Open the .bxl file with the Ultra Librarian software.
You can always access the complete CAD/CAE Symbols database at http://webench.ti.com/cad/
Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a (free download.).
The UL Reader is a subset of the Ultra Librarian toolset that can generate, import, and export components and their attributes in virtually any EDA CAD/CAE format.
Technical Documents
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Datasheet (1)
| Title | Type | Size (KB) | Date |
| | PDF | 2352 |
28 Mar 2018
|
User guides (1)
| Title | Type | Size (KB) | Date |
| | PDF | 608 |
10 Apr 2017
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Design files (6)
| | ZIP | 6085 |
11 May 2017
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| | ZIP | 18998 |
11 May 2017
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| | ZIP | 10228 |
11 May 2017
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| | PDF | 196 |
11 May 2017
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| | PDF | 89 |
11 May 2017
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| | PDF | 334 |
11 May 2017
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More literature (1)
| Title | Type | Size (KB) | Date |
| | PDF | 38 |
02 Jan 2019
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