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This document serves as a reference for the PCM4222EVM evaluation module. When
used in conjunction with commonly available audio test equipment, the PCM4222EVM
provides a complete environment for evaluating the functionality and performance of
the
PCM4222
platform for the PCM4220 integrated circuit; the PCM4220 is a subset derivative of the
PCM4222 device.
This document includes information regarding absolute operating conditions,
power-supply requirements, and hardware configuration for the evaluation module. The
electrical schematics and bill of materials are also included for reference purposes.
Throughout this document, the acronym EVM and the phrase evaluation module are
synonymous with the PCM4222EVM.
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PCM4222EVM Schematics, Page 1 of 2
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SBAU124 - December 2006
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integrated circuit. Indirectly, the PCM4222EVM serves as an evaluation
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PCM4222EVM User's Guide
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User's Guide
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PCM4222EVM User's Guide
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Related Manuals for Texas Instruments PCM4222EVM
Summary of Contents for Texas Instruments PCM4222EVM
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Page 1: Table Of Contents
SBAU124 – December 2006 PCM4222EVM User's Guide This document serves as a reference for the PCM4222EVM evaluation module. When used in conjunction with commonly available audio test equipment, the PCM4222EVM provides a complete environment for evaluating the functionality and performance of PCM4222 integrated circuit. - Page 2 ..............DSD Output Mode Configuration ..............DSD Output Rate Selection ..........Modulator Data Port Header Pin Configuration ........Multi-Bit Modulator (MBM) Output Mode Configuration ..................Bill of Materials PCM4222EVM User's Guide SBAU124 – December 2006 Submit Documentation Feedback...
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Page 3: Introduction
Introduction Introduction The PCM4222EVM evaluation module from Texas Instruments provides a convenient platform for testing the PCM4222, a high-performance, stereo audio analog-to-digital (A/D) converter integrated circuit. Figure 1 shows a block diagram of the PCM4222 device. Refer to the PCM4222 product datasheet additional information and details regarding this product. - Page 4 Introduction The primary features of the PCM4222EVM include: • Simple configuration using switches and power-supply jumpers. • Two differential input buffer/filter circuits employing the Texas Instruments OPA1632 fully differential amplifer integrated circuit. • Two Texas Instruments DIT4192 digital audio interface transmitters, providing AES3-encoded output data.
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Page 5: Simplified Block Diagram For The Pcm4222Evm Evaluation Module
Introduction Figure 2 shows a simplified block diagram for the PCM4222EVM circuit functions. The blocks labeled FDA are the OPA1632 fully differential amplifier input circuits (U4 and U5). The blocks labeled DIT are the DIT4192 digital audio interface transmitters (U13 and U14). Two transmitters are required to support AES3 Single-Channel, Double Sampling Frequency applications. -
Page 6: Hardware Configuration
Hardware Configuration Hardware Configuration This section provides information on the PCM4222EVM hardware configuration, including power supplies and switch settings. Evaluation module handling information and absolute operating conditions are also provided. Electrostatic Discharge Warning CAUTION Failure to observe proper ESD handling procedures may result in damage to PCM4222EVM components. -
Page 7: Power Supply Jumper Configuration
+2.4 +3.6 The PCM4222EVM requires a minimum of two external dc power supplies for the analog functions. The two power supplies are labeled as +15V and –15V on terminal block J3. The +15V and –15V supplies should be regulated and capable of providing a minimum of 200mA of current each. - Page 8 PCM4222. The VCOML and VCOMR outputs are buffered by OPA227 low-noise precision op amps, configured as voltage followers. A buffer is required because of the low input impedance of the OPA1632 V pin. PCM4222EVM User's Guide SBAU124 – December 2006 Submit Documentation Feedback...
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Page 9: Master Clock Source Selection
PCM Double Speed 96kHz 24.576 12.288 176.4kHz 22.5792 11.2896 PCM Quad Speed 192kHz 24.576 12.288 DSD, 64x Oversampling 2.8224MHz 22.5792 11.2896 DSD, 128x Oversampling 5.6448MHz 22.5792 11.2896 Multi-Bit Modulator 6.144MHz 24.576 12.288 SBAU124 – December 2006 PCM4222EVM User's Guide Submit Documentation Feedback... -
Page 10: Pcm Output Mode Configuration
Hardware Configuration Manual Reset Operation The PCM4222EVM includes two momentary-contact, normally open, push-button switches that are used for manual reset functions. Switch SW4 can be used to reset the PCM4222, while switch SW5 can be used to reset the DIT4192 transmitters. In each case, simply press and then release the corresponding push-button switch to force an external reset for these devices. -
Page 11: Audio Serial Port Header Configuration
FMT0 and FMT1 switches. Table 9. Audio Serial Port Data Format Selection Switch SW3, FMT1 Switch SW3, FMT0 Audio Data Format Left Justified TDM with One BCK Period Delay SBAU124 – December 2006 PCM4222EVM User's Guide Submit Documentation Feedback... -
Page 12: Tdm Sub-Frame Assignment
This input is controlled using the DF element on switch SW1. Table 12 summarizes the operation of the DF switch. Table 12. Digital Decimation Filter Configuration Switch SW1, DF Digital Decimation Filter Response Classic Low Group Delay PCM4222EVM User's Guide SBAU124 – December 2006 Submit Documentation Feedback... -
Page 13: Digital High-Pass Filter Switch Operation
2.7.6 AES3 Transmitter Operation The EVM includes two Texas Instruments DIT4192 digital audio interface transmitters, U13 and U14. The transmitters accept either Left Justified or I S formatted PCM output data from the PCM4222 and then encode it into an AES3 data stream, which is output at connectors J7 through J10. -
Page 14: Dit4192 Data Format Selection
Double Sampling Frequency mode with an output frame rate equal to 96kHz. There is no need to change the master clock divider or frequency, because the DIT4192 manages the change in output frame rate automatically. PCM4222EVM User's Guide SBAU124 – December 2006 Submit Documentation Feedback... -
Page 15: Dsd Data Port Header Pin Configuration
64x Oversampled Data with Output Rate = MCKI ÷ 4 128x Oversampled Data with Output Rate = MCKI ÷ 2 For more information regarding DSD output mode operation, timing, and specifications, see the PCM4222 datasheet. SBAU124 – December 2006 PCM4222EVM User's Guide Submit Documentation Feedback... -
Page 16: Hardware Reference
For more information regarding Multi-Bit Modulator output mode operation, timing, and specifications, see PCM4222 datasheet Hardware Reference This section provides the electrical schematics and the Bill of Materials for the PCM4222EVM evaluation board. The components shown in the schematic are listed in Table 23, the Bill of Materials, for reference. -
Page 17: Pcm4222Evm Schematics
Hardware Reference Electrical Schematics The electrical schematics for the PCM4222EVM are shown in Figure 4 Figure Figure 4. PCM4222EVM Schematics, Page 1 of 2 SBAU124 – December 2006 PCM4222EVM User's Guide Submit Documentation Feedback... -
Page 18: Pcm4222Evm Schematics
Hardware Reference Figure 5. PCM4222EVM Schematics, Page 2 of 2 PCM4222EVM User's Guide SBAU124 – December 2006 Submit Documentation Feedback... -
Page 19: Bill Of Materials
Terminal Strip, 4 pin (2x2) Samtec TSW-102-07-T-D 0Ω R1-R8 Chip Resistor, 0Ω Shunt, Size = 0805 Panasonic ERJ-6EY0R00V Chip Resistor, Thick Film, 1% 40.2Ω R19-R22 Panasonic ERJ-14NF40R2U Tolerance, 40.2Ω, 1/4W, Size = 1210 SBAU124 – December 2006 PCM4222EVM User's Guide Submit Documentation Feedback... - Page 20 U13, U14 Digital Audio Interface Transmitter Texas Instruments DIT4192IPWRG4 SN74AHC14PWG4 Hex Schmitt Trigger Inverter Texas Instruments SN74AHC14PWRG4 Dual Positive Edge Triggered D-Type Texas Instruments SN74LVC74APWRG4 Flip-Flops with Clear and Preset PCM4222EVM User's Guide SBAU124 – December 2006 Submit Documentation Feedback...
- Page 21 Oscillator, CMOS Output with Active Pletronics SM7745HSV-24.576M High Enable, 24.576MHz, ±50ppm Shorting Blocks Samtec SNT-100-BK-T-H Self-Adhesive Rubber Feet 3M Bumpon SJ-5003 PCM4222EVM PWB Texas Instruments 6469498 C52-C56 Stuff Option Capacitors, Size = 0805 SBAU124 – December 2006 PCM4222EVM User's Guide Submit Documentation Feedback...
- Page 22 EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use.
- Page 23 TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products...
- Page 24 Мы молодая и активно развивающаяся компания в области поставок электронных компонентов. Мы поставляем электронные компоненты отечественного и импортного производства напрямую от производителей и с крупнейших складов мира. Благодаря сотрудничеству с мировыми поставщиками мы осуществляем комплексные и плановые поставки широчайшего спектра электронных компонентов.
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