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This document provides the information needed to set up and operate the
PCM4202EVM evaluation module (EVM). For a more detailed description of the
PCM4202, please refer to the product datasheet available from the Texas Instruments
web site at
this guide entitled Related Documentation from Texas Instruments and Additional
Documentation. Throughout this document, the acronym EVM and the phrase
evaluation module are synonymous with the PCM4202EVM. This user's guide includes
setup and configuration instructions, information regarding absolute operating con-
ditions for power supplies and input/output connections, an electrical schematic, PCB
layout drawings, and a bill of materials (BOM) for the EVM.
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SBAU103 - August 2004
http://www.ti.com.
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PCM4202 Functional Block Diagram
PCM4202EVM Functional Block Diagram
DIT (Transmitter) Reset Circuitry
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PCM4202EVM User's Guide
Additional support documents are listed in the sections of
Contents
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List of Figures
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List of Tables
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User's Guide
SBAU103 - August 2004
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PCM4202EVM User's Guide
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Related Manuals for Texas Instruments PCM4202EVM
Summary of Contents for Texas Instruments PCM4202EVM
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Page 1: Table Of Contents
PCM4202EVM User's Guide This document provides the information needed to set up and operate the PCM4202EVM evaluation module (EVM). For a more detailed description of the PCM4202, please refer to the product datasheet available from the Texas Instruments web site at http://www.ti.com. -
Page 2: Sbau103 – August
..........Digital Interface Transmitter Configuration ............ Transmitter Master Clock Configuration ............ Transmitter Output Mode Configuration ..............PCM4202EVM Bill of Materials PCM4202EVM User's Guide SBAU103 – August 2004... -
Page 3: Introduction
Reference or DSDR Audio Serial Port Voltage CLIPR Reference GNDL CLIPL FMT0 L− Delta−Sigma Decimation FMT1 Modulator Filter HPFD Clock Reset Power Logic Control SCKI AGND DGND Figure 1. PCM4202 Functional Block Diagram SBAU103 – August 2004 PCM4202EVM User's Guide... - Page 4 • External system clock inputs supporting alternative sampling rates up to 216kHz. The PCM4202EVM requires +15V, -15V, and +5V analog power supplies. Additionally, a +5V digital power supply is required, with a +3.3V digital supply being derived onboard using a linear voltage regulator IC.
- Page 5 TRS input plugs. Each of the analog inputs is buffered and filtered using a low noise input circuit, utilizing a Texas Instruments OPA1632 fully differential amplifier. The output of each buffer circuit is connected to a corresponding differential input of the PCM4202. The PCM4202 is then used to convert the analog signal to either a 24-bit linear PCM or 1-bit DSD representation in the digital domain.
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Page 6: Additional Documentation
J7. Related Documentation from Texas Instruments The following documents provide information regarding Texas Instrument integrated circuits used in the assembly of the PCM4202EVM. The latest revisions of these documents are available from the TI web site at http://www.ti.com. -
Page 7: Getting Started
Failure to observe ESD handling procedures may result in damage to EVM components. EVM Package Contents Upon opening the PCM4202EVM package, please check to make sure that the following items are included: · One PCM4202EVM · One printed copy of the PCM4202 product datasheet ·... -
Page 8: Hardware Description And Configuration
The digital supply requires +5.0V DC and should be rated for at least 500mA of output current. The +5.0V supply is regulated to +3.3V DC by an onboard Texas Instruments REG1117 linear voltage regulator (U6), which is used to power the digital section of the PCM4202 and the majority of the support logic circuitry. -
Page 9: Audio Data Format Selection
Hardware Description and Configuration Analog Inputs The PCM4202EVM includes two Neutrik combo XLR connectors, which accept either 3-pin male XLR or ¼-inch TRS phono plugs. The connectors are numbered J1 and J2, corresponding to the left and right channels, respectively. -
Page 10: System Clock Source Selection
Hardware Description and Configuration System Clock Configuration Switch SW5 is used to select the system clock source for the PCM4202EVM. Table 3 summarizes the available clock source options. The onboard oscillators support standard PCM sampling rates in Master mode, including 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, and 192kHz. The external clock input (connector J7) may be used to supply alternate system clock frequencies that support alternative sample rates. -
Page 11: Sampling Mode Selection: Pcm Slave Mode Audio Formats
DSD output mode. The high-pass filter function may be enabled or disabled using the HPFD switch on SW1. Table 7 summarizes the operation of the HPFD switch. Table 7. Digital High-Pass Filter Configuration HPFD Digital High-Pass Filter Function Enabled Disabled SBAU103 – August 2004 PCM4202EVM User's Guide... - Page 12 Two Texas Instruments DIT4192 digital interface transmitters provide AES3-encoded outputs for the PCM4202EVM. Switch SW3 is utilized to configure the transmitters. The outputs of the transmitters are available at connectors J5 and J6, which are RCA phono jacks. These outputs are designed for use with 75Ω...
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Page 13: Schematic, Pcb Layout, And Bill Of Materials
Schematic, PCB Layout, and Bill of Materials Reset Operations The PCM4202EVM includes two reset switches, SW2 and SW4. Both are momentary contact pushbutton switches that are normally open. SW2 provides the manual reset for the PCM4202 (U1), while switch SW4 provides the manual reset for the two DIT4192 transmitters (U12 and U13). -
Page 14: Pcm4202Evm Schematic Diagram
Schematic, PCB Layout, and Bill of Materials Figure 4. PCM4202EVM Schematic Diagram PCM4202EVM User's Guide SBAU103 – August 2004... - Page 15 Schematic, PCB Layout, and Bill of Materials PCB Layout The PCM4202EVM is a 4-layer printed circuit board with the following layer structure: • Layer 1: Top (Component Side) • Layer 2: Ground Plane • Layer 3: Power • Layer 4: Bottom (Solder Side) The ground plane doubles as a heat sink for the PCM4202 PowerPAD package.
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Page 16: Top Side Silkscreen
Schematic, PCB Layout, and Bill of Materials Figure 5. Top Side Silkscreen PCM4202EVM User's Guide SBAU103 – August 2004... -
Page 17: Bottom Side Silkscreen
Schematic, PCB Layout, and Bill of Materials Figure 6. Bottom Side Silkscreen SBAU103 – August 2004 PCM4202EVM User's Guide... -
Page 18: Top Layer (Component Side)
Schematic, PCB Layout, and Bill of Materials Figure 7. Top Layer (Component Side) PCM4202EVM User's Guide SBAU103 – August 2004... -
Page 19: Ground Plane Layer
Schematic, PCB Layout, and Bill of Materials Figure 8. Ground Plane Layer SBAU103 – August 2004 PCM4202EVM User's Guide... -
Page 20: Power Plane Layer
Schematic, PCB Layout, and Bill of Materials Figure 9. Power Plane Layer PCM4202EVM User's Guide SBAU103 – August 2004... -
Page 21: Bottom Layer (Solder Side)
Schematic, PCB Layout, and Bill of Materials Figure 10. Bottom Layer (Solder Side) SBAU103 – August 2004 PCM4202EVM User's Guide... -
Page 22: Bill Of Materials
Schematic, PCB Layout, and Bill of Materials Bill of Materials The Bill of Materials, listing the components used in the assembly of the PCM4202EVM, is shown Table 11. Table 11. PCM4202EVM Bill of Materials QTY PER ITEM VALUE Ref Des... - Page 23 Schematic, PCB Layout, and Bill of Materials Table 11. PCM4202EVM Bill of Materials (continued) QTY PER ITEM VALUE Ref Des BOARD PART NUMBER DESCRIPTION RN1, RN3, 742C163103J Thick Film Chip Resistor Array, 10kΩ, 16-Terminal, 8 Resistors, Isolated ITT Industries/...
- Page 24 EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use.
- Page 25 TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions:...
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