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1.1
1.2
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2.1
2.2
2.3
Bill of Materials
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DEM-DIR9001 Block Diagram
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DEM-DIR9001 Silkscreen
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DEM-DIR9001 - Top View
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DEM-DIR9001 - Bottom View
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SW002: FMT0, FMT1 PCM Audio Data Format Selection
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SW002: PSCK0, PSCK1 System Clock Frequency Selection
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Description
The DEM-DIR9001 is an evaluation board for the low jitter, Digital Audio Interface Receiver DIR9001. It is
operated by either a single +3.3 V power supply, or a +5 V power supply.
The DEM-DIR9001 has both an Optical Toslink input and an Coaxial input for the SPDIF interface which
can achieve standard digital audio interface format IEC60958, AES/EBU, and JEIAT CPR-1205 (former
EIAJ CP-1201, 340).
The DEM-DIR9001 recovers standard system clock and PCM audio interface clock from incoming biphase
signals such as SPDIF, IEC60958, and AES/EBU. These signals are provided to the audio DAC/DSP,
buffer output, and direct output.
SLAU225 - July 2007
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Contents
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List of Figures
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List of Tables
DIR9001 Evaluation Board
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DIR9001 Evaluation Board
User's Guide
SLAU225 - July 2007
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Summary of Contents for Texas Instruments DIR9001

  • Page 1: Table Of Contents

    SW002: PSCK0, PSCK1 System Clock Frequency Selection Description The DEM-DIR9001 is an evaluation board for the low jitter, Digital Audio Interface Receiver DIR9001. It is operated by either a single +3.3 V power supply, or a +5 V power supply.
  • Page 2: Description

    CN052. 1.2.2 Reset SW001 is a reset switch for the DIR9001. External automatic power on the reset circuit is combined. 1.2.3 SPDIF Input and Selection • Connect the Toslink optical fiber cable connector at U001.
  • Page 3 AUTO: Outputs from either the PLL generated clock or the XTAL clock are automatically selected by the operation status of DIR9001. DIR9001 is locked into SPDIF interface clock → PLL clock DIR9001 is unlocked into SPDIF interface clock → XTAL clock...
  • Page 4 CN004 and CN005 are PCM audio interface clock outputs (System Clock, LRCK, BCK, and DATA). CN004 is a buffered output with a mounted logic buffer IC. CN005 is a direct output from DIR9001. Caution: Pins on the right side are GND.
  • Page 5: Schematic, Printed-Circuit Board And Bill Of Materials

    Schematic, Printed-Circuit Board and Bill of Materials Schematic, Printed-Circuit Board and Bill of Materials This section presents the DEM-DIR9001 printed-circuit boards, the DEM-DIR9001 schematic, and the bill of materials. DEM-DIR9001 Printed-Circuit Board Figure 2. DEM-DIR9001 Silkscreen Figure 3. DEM-DIR9001 — Top View SLAU225 –...
  • Page 6 Schematic, Printed-Circuit Board and Bill of Materials Figure 4. DEM-DIR9001 — Bottom View DIR9001 Evaluation Board SLAU225 – July 2007 Submit Documentation Feedback...
  • Page 7: Dem-Dir9001 Schematic Circuit Diagram

    Schematic, Printed-Circuit Board and Bill of Materials DEM-DIR9001 Schematic Circuit Diagram Figure 5. Schematic SLAU225 – July 2007 DIR9001 Evaluation Board Submit Documentation Feedback...
  • Page 8 Test Pin Mac 8 LC-2-G Yellow TOSLINK TOSHIBA TORX141P Logic IC SN74LVU04ANSR PCM9001PW Regulator REG1117-3.3 800 mA, 3.3 V Logic IC SN74LV541APW Logic IC SN74LV541APW Crystal Resonator Kinseki HC-49/U-S 24.576 MHz DIR9001 Evaluation Board SLAU225 – July 2007 Submit Documentation Feedback...
  • Page 9 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. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
  • Page 10 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...

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