Manuale d’uso / di manutenzione del prodotto DEM-DAI3010 del fabbricante Texas Instruments
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DEMĆDAI3010 April 2003 DA V Digital Audio/Speaker User ’ s Guide SLEU036.
IMPORT ANT NOTICE T exas 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.
EVM IMPORT ANT NOTICE T exas 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 EV ALUA TION PURPOSES ONL Y and is not considered by TI to be fit for commercial use.
EVM W ARNINGS 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.
Contents v Contents 1 Description 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Block Diagram 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents vi.
1-1 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.
Block Diagram 1-2 1.1 Block Diagram Figure 1 – 1. DEM-DAI3010 Block DIagram L-ch Output R-ch Output PCM3010 (Slave Only) L-ch 1V rms R-ch 1V rms R-ch 2V rms L-ch 2V rms ± 15 V DIR1703 DIT4096 LPF 74HCT244 OPT . IN SW001 S/PDIF Input S/PDIF Output 24.
Use of the DEM-DAI3010 1-3 Description 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.
Settings and Connections for Basic Operation 1-4 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 .
Setting Functions 1-5 Description - 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.
Setting Functions 1-6 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.
Setting Functions 1-7 Description FMT1 FMT0 Input Data Format L L 24-bit, left-justified, MSB-first L H 24-bit, I 2 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.
Setting Functions 1-8 JP001 setting table: DIR1703 system clock and crystal frequency f S in X’tal Mode 128 f S 256 f S 384 f S 512 f S BRSEL Jumper Position 32 kHz 4.096 MHz 8.192 MHz 12.288 MHz 16.384 MHz BFRAME 44.1 kHz 5.6448 MHz 1 1.2896 MHz 16.
Setting Functions 1-9 Description CN057: V CC supply selection for the PCM3010 This jumper determines whether V CC for the PCM3010 is supplied from a 3.3-V regulator on this board (U051), or via an external power supply terminal (CN056). In the initial setting, V CC is supplied from the onboard regulator .
1-10.
2-1 Printed-Circuit Board and Schematic Printed-Circuit Board and Schematic This chapter presents the DEM-DAI3010 printed-circuit board and schematics. T opic Page 2.1 DEM-DAI3010 Printed-Circuit Board 2-2 . . . . . . . . . . . . . . . . . . . . . . .
DEM-DAI3010 Printed-Circuit Board 2-2 2.1 DEM-DAI3010 Printed-Circuit Board Figure 2 – 1. DEM-DAI3010 Silkscreen.
DEM-DAI3010 Printed-Circuit Board 2-3 Printed-Circuit Board and Schematic Figure 2 – 2. DEM-DAI3010 — T op View.
DEM-DAI3010 Printed-Circuit Board 2-4 Figure 2 – 3. DEM-DAI3010 — Bottom View.
DEM-DAI3010 Schematics 2-5 Printed-Circuit Board and Schematic 2.2 DEM-DAI3010 Schematics Figure 2 – 4. DEM-DAI3010 Analog Section 5 4 3 2 1 C132 10uF/16V C109 120pF R101 8.
DEM-DAI3010 Schematics 2-6 Figure 2 – 5. DEM-DAI3010 Regulator , Connector and Ext.-I/F U054 74L VC244 V CC C056 10uF/16V C054 100uF /16V C053 100uF /16V C051 0.
DEM-DAI3010 Schematics 2-7 Printed-Circuit Board and Schematic Figure 2 – 6. DEM-DAI3010 Digital Section (Digital Audio Interface) R001 47k GND U003 REG1 1 17 – 3.3 Clock mode select REC – out MDO SW006 DSS109 U001 74HCU04 U002 DIR1703 C001 0.1u F C008 10uF /16V C009 0.
2-8.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Texas Instruments DEM-DAI3010 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Texas Instruments DEM-DAI3010 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Texas Instruments DEM-DAI3010 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Texas Instruments DEM-DAI3010 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Texas Instruments DEM-DAI3010, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Texas Instruments DEM-DAI3010.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Texas Instruments DEM-DAI3010. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Texas Instruments DEM-DAI3010 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
