Manuale d’uso / di manutenzione del prodotto TAS5727 del fabbricante Texas Instruments
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User's Guide SLOU299 – December 2010 TAS5727 25W Digital Input Amplifier with EQ and 2-Band DRC This manual describes the operation of the TAS5727EVM to evaluate the performance of the TAS5727 integrated digital audio power amplifier.
2CH Analog Input From Other Source/ Digital Out PC Interface SPDIF/ Optical, Coax T AS5727 Left Right T AS5727 EVM MC57xxPSIA PBTL Overview www.ti.com 12 DRC Options .....................................................................................
Analog In to ADC Coaxial SPDIF Input Optical SPDIF Input USB Port 5V Supply for System Power 8V–26V Supply for Output Power Speaker Out PBTL Speaker Out C & D Speaker Out A & B www.
Installation www.ti.com 2.1.1 Connecting the TAS5727EVM to MC57xxPSIA On the right side of the MC57xxPSIA is a terminal block and another on the left of the TAS5727EVM (labeled J1). Carefully place the MC57xxPSIA block above the TAS5727EVM block and gently push down.
+ – OUTB OUT A www.ti.com Installation Figure 5. BTL Connection 2.1.4 USB Interface The TAS5727 registers are accessed through I 2 C™ bus lines SDA and SCL. The USB circuit and USB connector on the MC57xxPSIA board facilitates the connection between a host computer and the device.
Installation www.ti.com Execute the GUI install program, Setup.exe. Once the program is installed, the program group and shortcut icon is created in Start → Program → Texas Instruments Inc → TAS57x UI. The GUI launches as shown in Figure 7 . The TAS5717 tab opens when the GUI starts.
R L 9BQ 9BQ B0321-1 1 0x72 0x76 0x73 0x77 27–2F I C Subaddress in Red 2 I C:57 VDISTB 2 I C:0x6B (32Bit-Left Level) Right Level) 2 I C:0x6C (32 Bit- 2 I C:56 VDIST A 2 31–39 2BQ 5A, 5B 2BQ 5E, 5F .
Using the EVM Software www.ti.com Figure 7. Main GUI Display 3 Using the EVM Software 3.1 Connect the GUI to the EVM Open the GUI by clicking Start → All Programs → Texas Instruments Inc → TAS57x → TAS57x GUI. Connect the MC57xxPSIA board (attached to the TAS5717EVM) to your PC with a USB cable.
www.ti.com Using the EVM Software I 2 C registers can be written or read using this tool. The I 2 C command file can be sent by selecting the command file and Execute command.
Using the EVM Software www.ti.com Figure 11. Biquad GUI Window A check mark selects the Biquad. If not selected, the Biquad is in ALL PASS Mode. The frequency response and phase response plots for the current settings can be viewed and adjusted in the Frequency Response and Phase Response panes of the Biquad GUI as shown in Figure 11 .
www.ti.com Using the EVM Software Figure 12. DRC Options The crossover frequency for the 2-band DRC by default is 300Hz. This can be modified by entering a new value in the property window. The DRC rates for the softening filter, attack, and release can also be adjusted.
Using the EVM Software www.ti.com 3.5.1 MODULATION SCHEMES Using The FAULT PIN As An Error Indicator: The A_SEL_FAULTZ pin is the I 2 C device address select by default. To re-define this pin as an output, write '1' to bit D1 of reg 0X05. Once re-programmed as output, this pin indicates a fault condition.
www.ti.com Jumpers and Control Utilities on MC57xxPSIA board 4 Jumpers and Control Utilities on MC57xxPSIA board 4.1 RCA/OPTICAL Jumpers Select the jumper to reflect the source whether it is RCA or OPTICAL. 4.2 Switches JP1 on the daughter card is for PBTL select.
Board Layouts, Bill of Materials, and Schematic www.ti.com 5 Board Layouts, Bill of Materials, and Schematic 5.1 TAS5727EVM and MC57xxPSIA Board Layouts Figure 14.
www.ti.com Board Layouts, Bill of Materials, and Schematic 5.2 Bill of Materials Table 2. Bill of Materials for TAS5727EVM Manufacturer Part No. Qty Ref Des Vendor Part No.
MCLK LRCLK SCLK SDIN SCL SDA OUTB OUTC OUTD OUTA 0.1ufd/50V 0603 C15 PGN D PVDD 0.033ufd/50V 0603 C18 0.033ufd/50V 0603 C20 PGN D 0.1ufd/10V 0603 C12 PGN D PGND 4700pfd/50V 0603 C6 0.1ufd/10V 0603 C2 AV SS 0.0 0603 R3 PGN D 4700pfd/50V 0603 C8 0.047ufd/16V 0603 C5 470 0603 R7 0.
USB I/O (A0 IN DEF AULT) USB BOOT EPROM DECOUPLING TO EVM BOARD USB RESET T AS1020BPFB U3 USB INTERF ACE ENGINEERING EV ALUA TION ONL Y www.ti.com Board Layouts, Bill of Materials, and Schematic 17 SL.
H H 1-2: 2-3: TO ADC (HIGH) (LOW) FMT1 TO (DEFAUL T) MASTER RESET INPUT SELECT OPTO INPUT RCA INPUT SPDIF INPUT OPTO INPUT RCA INPUT TO SPDIF SPDIF DECOUPLING 24Bit/MSB/I2S FMT0 DA T A FORMA T EVM BOARD ADC TO LOCK SPDIF SPDIF 3.
(SDIN2) (SDIN1) PDN MC012 PSIA MUTE (1-2) (2-3) HIGH POWER INPUT FROM USB FROM SPDIF 5V DECOUPLING TO EVM BOARDS FROM F AUL T FROM VR1 MASETER RESET ANALOG INPUTS 3.3V DECOUPLING NOTES ON JUMPERS IN: LIN/RIN = 1Vrms MAX. OUT : LIN/RIN = 2Vrms MAX. PCM1808PW ADC ENGINEERING EV ALUA TION ONL Y ADC / CONNECTOR I/O www.
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.
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.
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 TAS5727 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 TAS5727 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Texas Instruments TAS5727 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Texas Instruments TAS5727 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Texas Instruments TAS5727, 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 TAS5727.
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 TAS5727. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Texas Instruments TAS5727 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.
