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EVM User's Guide: PCM1809EVM
PCM1809 Evaluation Module
Description
The PCM1809EVM evaluation module (EVM)
allows the user to test the capabilities of
the PCM1809 device, which is a hardware-
controlled, high-performance audio analog-to-digital
converter (ADC) intended for applications in voice-
activated systems, professional microphones, audio
conferencing, portable computing, communication
and entertainment applications. The EVM provides
SBAU462 – JUNE 2024
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convenient connections to the input, output and
hardware control pins.
Features
•
Onboard microphones provided for voice recording
testing
•
Pin-controlled for simple and fast operation
•
Direct access to digital audio signals and control
interface for simple end-system integration
PCM1809EVM
Copyright © 2024 Texas Instruments Incorporated
Description
PCM1809 Evaluation Module
1
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Summary of Contents for Texas Instruments PCM1809EVM
- Page 1 EVM User's Guide: PCM1809EVM PCM1809 Evaluation Module Description convenient connections to the input, output and hardware control pins. The PCM1809EVM evaluation module (EVM) allows the user to test the capabilities of Features the PCM1809 device, which is a hardware- •...
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Page 2: Kit Contents
5V supply. Access to the converter output is provided on the audio serial interface in I2S or TDM format. This user's guide describes the function and use of the PCM1809EVM evaluation module. This document includes the hardware configuration instructions, a quick-start guide, jumper and connector descriptions, schematics, and printed-circuit board (PCB) layout that demonstrate TI's recommended practices for these devices. -
Page 3: Specification
(TDM) or I2S audio formats, selectable with the hardware pin level. Additionally, the PCM1809 supports controller and target mode selection for the audio bus interface operation. SBAU462 – JUNE 2024 PCM1809 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated... -
Page 4: Hardware Configuration
2.1 Power Supply The PCM1809EVM can be powered with a single 5V power supply connected to J6. Onboard low dropout regulators convert the 5V supply to the 3.3V and 1.8V rails used by the ADC. The analog supply, AVDD, is fixed at 3.3V. - Page 5 Hardware Table 2-1. PCM1809EVM Headers and Jumpers (continued) Designator Function Connect MIC1 OUT- to ADC IN1M MD0 select MD1 select MCLK to MD1 FMT0 select Connect MIC2 OUT- to ADC IN2M IN2M capacitor bypass IN1P capacitor bypass IN2P capacitor bypass IN1M capacitor bypass Table 2-2.
- Page 6 2.3.1 Onboard Microphone Inputs PCM1809EVM has two onboard differential microphones that can be routed to the inputs with jumpers. The microphones require a bias be applied to MPWR. MPWR can be tied to AVDD on J4, or to MICBIAS if using a device that supports this feature.
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Page 7: Line Inputs
J1 (IN1) and J2 (IN2). The input accepted in this mode is a differential, 2 VRMS, full-scale audio signal. PCM1809 accepts , 1 VRMS, single ended full-scale audio signal. Figure 2-4. PCM1809 Line Inputs SBAU462 – JUNE 2024 PCM1809 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated... - Page 8 Hardware Design Files www.ti.com 3 Hardware Design Files 3.1 Schematics Figure 3-1 illustrates the EVM schematic. Figure 3-1. Schematic PCM1809 Evaluation Module SBAU462 – JUNE 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
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Page 9: Layer Plots
Hardware Design Files 3.2 Layer Plots Figure 3-2. Top Layer Figure 3-3. Power Plane 1 SBAU462 – JUNE 2024 PCM1809 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated... - Page 10 Hardware Design Files www.ti.com Figure 3-4. Power Plane 2 Figure 3-5. Bottom Layer PCM1809 Evaluation Module SBAU462 – JUNE 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 11 TSW-101-07-G-S Samtec LBL1 Thermal Transfer Printable Labels, 0.650" W x PCB Label 0.650 x 0.200 THT-14-423-10 Brady 0.200" H - 10,000 per roll inch SBAU462 – JUNE 2024 PCM1809 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 12 Test Point, Miniature, Red, TH Red Miniature Test point 5000 Keystone TP19, TP20, TP21, Test Point, Miniature, Green, TH Green Miniature Test 5116 Keystone TP22 point PCM1809 Evaluation Module SBAU462 – JUNE 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
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Page 13: Additional Information
Additional Information 4 Additional Information 4.1 Trademarks All trademarks are the property of their respective owners. SBAU462 – JUNE 2024 PCM1809 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated... - Page 14 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
- Page 15 www.ti.com Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product.
- Page 16 www.ti.com Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à...
- Page 17 www.ti.com EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices.
- Page 18 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2023, Texas Instruments Incorporated...
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Page 19: Important Notice
TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2024, Texas Instruments Incorporated...
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