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User’s Guide
April 2003 DAV Digital Audio/Speaker
SLEU036
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the t
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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. As such, the goods being provided may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety measures typically found in the end product
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EVM WARNINGS AND RESTRICTIONS It is important to operate this EVM within the input voltage range of ±15 V and the output voltage range of ±15 V. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions concerning the input range, please contact a TI field representative prior to connecting the input power. Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage
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Contents Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2 Use of the DEM-DAI3010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.2.1 Initial Settings of the DEM-DAI3010 (at
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Contents vi
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Chapter 1 Description The DEM-DAI3010 is an evaluation board for the PCM3010 (24-bit, 96-kHz ADC and 192-kHz DAC, stereo codec). This board includes not only the PCM3010 but also analog I/O terminals, analog filter circuits, and an S/PDIF digital I/O circuit that is useful for codec evaluation. S/PDIF I/O circuits consist of a 24-bit/96-kHz digital audio interface receiver (DIR1703) and a digital audio interface transmitter (DIT4096), and include optical (TOSLINK) and coaxial S/PDIF digital I/
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Block Diagram 1.1 Block Diagram Figure 1–1. DEM-DAI3010 Block DIagram System Clock X’tal Frequency Data Format Clock Mode System Clock SW003 JP001 SW004 DAC Output S/PDIF Input L-ch Output JP107 LPF SW001 OPT. IN PCM3010 R-ch Output DIR1703 (Slave Only) LPF COAX. IN ADC Input 24.576 MHz L-ch 1Vrms JP105 S/PDIF Output L-ch 2Vrms LPF SW051 OPT. OUT DIT4096 R-ch 1Vrms JP106 COAX. OUT 74HCT244 R-ch 2Vrms LPF SW005 SW006 SW101 System Clock Channel Status System Clock Data Format Data Format Power Dow
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Use of the DEM-DAI3010 1.2 Use of the DEM-DAI3010 The DEM-DAI3010 is shipped with standard settings preset. Therefore, connecting power supplies (15-V, –15-V and 5-V) is the only requirement to prepare the board for use, unless nonstandard settings are desired. 1.2.1 Initial Settings of the DEM-DAI3010 (at shipping) Table 1–1.Initial Settings of the DEM-DAI3010 at Shipping Item Initial Setting (at shipping) Power supply voltage 15 V, –15 V, and 5 V (close CN57) Power supply terminals CN51–CN55 (
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Settings and Connections for Basic Operation 1.3 Settings and Connections for Basic Operation The PCM3010 is an LSI codec containing an ADC and a DAC. Connections and settings depend on the evaluation object (ADC or DAC), and the setup should be checked carefully. Following are example settings for three typical evaluation situations. Note that when using S/PDIF I/O, the optical and coaxial input corresponds to f = 96 kHz. S When the DAC section of PCM3010 is evaluated with S/PDIF input signal (
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Setting Functions Data and a clock are supplied to the PCM3010 side of JP107. Set up FMT0 and FMT1 of SW101 according to the data format to be used. Set up DEMP0 and DEMP1 of SW101 for the desired de-emphasis of the DAC section and PWDN for the power-down setting. 1.4 Setting Functions All functions of the devices (PCM3010, DIR1703, DIT4096) on the DEM-DAI3010 are controlled by DIP switches or header pins on this PCB. Therefore, the DEM-DAI3010 does not require a microcontroller or softwar
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Setting Functions 1.4.2 Detailed Explanation of Function Setting Switches and Header Pins SW001: Switch to select S/PDIF input connector (optical/coaxial). Selection of the S/PDIF signal that is routed to the DIR1703 DIN port. SW002: Reset switch for the DIR1703 and DIT4096. Pushing this switch resets the DIR1703 and DIT4096 to the initial state. A reset circuit operates at the time of power-supply connection, resetting the DIR1703 and DIT4096 automatically. Therefore, it is not usually necessar
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Setting Functions FMT1 FMT0 Input Data Format L L 24-bit, left-justified, MSB-first 2 L H 24-bit, I S (initial setting) H L 24-bit, right-justified, MSB-first H H 16-bit, right-justified, MSB-first SW006: Switch for setting channel-status data of the DIT4096. Note that the OFF state of this switch sets a HIGH level. Channel status data can set up if needed. Moreover, it is also possible to connect a microcontroller to CN002 and to write in channel-status data with the microcontroller. See the DI
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Setting Functions JP001 setting table: DIR1703 system clock and crystal frequency f in X’tal S Mode 128 f 256 f 384 f 512 f BRSEL Jumper Position S S S S 32 kHz 4.096 MHz 8.192 MHz 12.288 MHz 16.384 MHz BFRAME 44.1 kHz 5.6448 MHz 11.2896 MHz 16.9344 MHz 22.5792 MHz EMFLG 48 kHz 6.144 MHz 12.288 MHz 18.432 MHz 24.576 MHz OPEN (no jumper) 88.2 kHz 11.2896 MHz 22.5792 MHz 33.8688 MHz 45.1584 MHz URBIT 96 kHz 12.288 MHz 24.576 MHz 36.864 MHz 49.152 MHz CSBIT Sample of a of JP001 setting Target: syst
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Setting Functions CN057: V supply selection for the PCM3010 CC This jumper determines whether V for the PCM3010 is supplied from a 3.3-V CC regulator on this board (U051), or via an external power supply terminal (CN056). In the initial setting, V is supplied from the onboard regulator. When V for the CC CC PCM3010 is to be provided by an external power supply, the jumper is removed from CN057 and 3.3 V is supplied to CN056. If 3.3 V is supplied externally, 5 V must still be provided to CN054 in
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1-10
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Chapter 2 Printed-Circuit Board and Schematic This chapter presents the DEM-DAI3010 printed-circuit board and schematics. Topic Page 2.1 DEM-DAI3010 Printed-Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.2 DEM-DAI3010 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 Printed-Circuit Board and Schematic 2-1
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DEM-DAI3010 Printed-Circuit Board 2.1 DEM-DAI3010 Printed-Circuit Board Figure 2–1. DEM-DAI3010 Silkscreen 2-2
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DEM-DAI3010 Printed-Circuit Board Figure 2–2. DEM-DAI3010—Top View Printed-Circuit Board and Schematic 2-3
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DEM-DAI3010 Printed-Circuit Board Figure 2–3. DEM-DAI3010—Bottom View 2-4
