Instruction d'utilisation Texas Instruments TLV320AIC12KEVMB-K

Instruction d'utilisation pour le dispositif Texas Instruments TLV320AIC12KEVMB-K

Dispositif: Texas Instruments TLV320AIC12KEVMB-K
Catégorie: Calculatrice
Fabricant: Texas Instruments
Dimension: 2.55 MB
Date d'addition: 3/19/2013
Nombre des pages: 40
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Résumés du contenu
Résumé du contenu de la page N° 1

User's Guide
SLAU229B–October 2007–Revised August 2008
TLV320AIC12KEVMB-K and TLV320AIC14KEVMB-K User's
Guide
This user's guide describes the characteristics, operation, and use of evaluation modules
TLV320AIC12KEVMB and TLV320AIC14KEVMB, both as stand-alone and as kits
(TLV320AIC12KEVMB-K and TLV320AIC14KEVMB-K). A complete circuit description, schematic diagram
and bill of materials are also included.
The following related documents are available through the Texas Instruments web site at www.t

Résumé du contenu de la page N° 2

www.ti.com 13 Command Line Interface Tab ............................................................................................ 20 14 File Menu.................................................................................................................... 21 15 Options Menu............................................................................................................... 21 16 Help .............................................................................................

Résumé du contenu de la page N° 3

www.ti.com EVM Overview 1 EVM Overview 1.1 Features • Full-featured evaluation board for the TLV320AIC12K/14K audio codec • TLV320AIC12KEVMB-K/14KEVMB-K features USB connectivity for quick and easy setup. • Intuitive evaluation software • Easy interfacing to multiple analog sources • Analog output signals from the TLV320AIC12K/14K are available on top and bottom connectors. • On-board headphone jack, external microphone jack and electret microphone are included • Digital control signals can be a

Résumé du contenu de la page N° 4

Digital Interface www.ti.com Table 1. Analog Interface Pinout (continued) PIN NUMBER SIGNAL DESCRIPTION J2.2 INP2 Noninverting analog input 2 J2.3 NC Not Connected J2.4 NC Not Connected J2.5 NC Not Connected J2.6 NC Not Connected J2.7 INM1 Inverting analog input 1 J2.8 INP1 Noninverting analog input 1 J2.9 AGND Analog Ground J2.10 NC Not Connected J2.11 AGND Analog Ground J2.12 NC Not Connected J2.13 AGND Analog Ground J2.14 NC Not Connected J2.15 NC Not Connected J2.16 NC Not Connected J2.17 AG

Résumé du contenu de la page N° 5

www.ti.com Digital Interface Table 3. Digital Interface Pinout (continued) PIN NUMBER SIGNAL DESCRIPTION J4.6 NC Not Connected J4.7 NC Not Connected J4.8 AIC12K/14K RESET Reset signal input to AIC12K/14KEVMB J4.9 NC Not Connected J4.10 DGND Digital Ground J4.11 NC Not Connected J4.12 NC Not Connected J4.13 NC Not Connected J4.14 AIC12K/14K RESET Reset signal input to AIC12K/14KEVMB J4.15 NC Not Connected 2 J4.16 SCL I C Serial Clock J4.17 NC Not Connected J4.18 DGND Digital Ground J4.19 NC Not C

Résumé du contenu de la page N° 6

Power Supplies www.ti.com 4 Power Supplies J3 provides connection to the common power bus for the TLV320AIC12KEVMB/14KEVMB. Power is supplied on the pins listed in Table 4. Table 4. Power Supply Pinout SIGNAL PIN NUMBER SIGNAL NC J3.1 J3.2 NC +5VA J3.3 J3.4 NC DGND J3.5 J3.6 AGND DVDD (1.8V) J3.7 J3.8 NC IOVDD (3.3V) J3.9 J3.10 NC The TLV320AIC12KEVMB-K/14KEVMB-K motherboard (the USB-MODEVM Interface board) supplies power to J3 of the TLV320AIC12KEVMB/14KEVMB. Power for the motherboard is suppli

Résumé du contenu de la page N° 7

www.ti.com Kit Operation 5.1 Analog Input The analog input sources can be applied directly to J2 (top or bottom side). The analog inputs may also be accessed through J8 and screw terminals J9 and J10. 5.2 Analog Output The analog outputs from the TLV320AIC12K/14K are available on J1 (top or bottom). They also may be accessed through J6 and J7 or J11. Note that the TLV320AIC14K only has one (differential) output which can be accessed from J1 or screw terminal J6. 5.3 Digital Control The digital c

Résumé du contenu de la page N° 8

Kit Operation www.ti.com TLV320AIC12KEVMB/14KEVMB TLV320AIC12K/14K EVM Position 1 Control Interface 2 I C TAS1020B USB USB 8051 EVM Position 2 Microcontroller SMARTDM Audio Interface Figure 1. TLV320AIC12KEVMB-K/14KEVMB-K Block Diagram The USB-MODEVM Interface board is intended to be used in USB mode, where control of the installed EVM is accomplished using the onboard USB controller device. Provision is made, however, for driving all 2 the data buses (I C, PCM/SMARTDM™) externally. The source o

Résumé du contenu de la page N° 9

www.ti.com Kit Operation Table 6. USB-MODEVM SW2 Settings SW-2 SWITCH NUMBER LABEL SWITCH DESCRIPTION 2 USB-MODEVM EEPROM I C Address A0 1 A0 ON: A0 = 0 OFF: A0 = 1 2 USB-MODEVM EEPROM I C Address A1 2 A1 ON: A1 = 0 OFF: A1 = 1 2 USB-MODEVM EEPROM I C Address A2 3 A2 ON: A2 = 0 OFF: A2 = 1 Digital Audio Bus Source Selection 2 4 USB I S ON: Digital Audio Bus connects to TAS1020 OFF: Digital Audio Bus connects to USB-MODEVM J14 Digital Audio Bus MCLK Source Selection 5 USB MCK ON: MCLK connects to

Résumé du contenu de la page N° 10

Kit Operation www.ti.com Figure 2. Default Software Screen 6.3 USB-MODEVM Interface Board The simple diagram shown in Figure 1 shows only the basic features of the USB-MODEVM Interface board. The board is built around a TAS1020B streaming audio USB controller with an 8051-based core. The board features two positions for modular EVMs, or one double-wide serial modular EVM may be installed. Since the TLV320AIC12KEVMB/14KEVMB is a double-wide modular EVM, it is installed with connections 2 to both

Résumé du contenu de la page N° 11

www.ti.com Kit Operation 6.5 Indicators and Main Screen Controls Figure 2 illustrates the indicators and the main screen controls near the top of the software screen display, and a large tabbed interface below. This section discusses the controls above this tabbed section. 2 At the top left of the screen is an Interface indicator. The TLV320AIC12K/14K has an I C interface. The indicator is lit after the program begins. Below the Interface indicator is the Device Connected indicator. The TLV320AI

Résumé du contenu de la page N° 12

Kit Operation www.ti.com Figure 3. Information Tab Additionally, the operating system's audio device must be configured as AIC12K/14K EVM (see Figure 4). 2 The External Audio Interface Configuration only allows I C communication between the host computer and the TLV320AIC12K/14K. In this configuration, the TLV320AIC12K/14K can transmit and receive audio data to/from an external PCM device or DSP. SW2 on the USB-MODEVM must be configured as shown in the right section of Figure 3. 12 TLV320AIC12KE

Résumé du contenu de la page N° 13

www.ti.com Kit Operation Figure 4. Sounds and Audio Devices Properties 6.7 Preset Configurations Tab The Preset Configurations tab (Figure 5) provides several presets for both the USB-MODEVM Audio Interface Configuration and the External Audio Interface Configuration. Also, there is a TLV320AIC12K/14K Defaults preset which programs the codec's default register settings. When a radio button is selected, a detailed description of the preset will appear on the Preset Configuration Description box.

Résumé du contenu de la page N° 14

Kit Operation www.ti.com Figure 5. Preset Configurations 6.8 Device Controls Tab The Device Controls Tab (Figure 6) contains six enumerated Control Registers sub tabs with controls for all six registers of the TLV320AIC12K/14K, a register table at the bottom of the tab, several controls 2 2 and an indicator at the right of the tab. The 8-bit I C Address indicator shows the current I C address. The Device Position control lets the user select a specific codec on a master-slave chain to write to o

Résumé du contenu de la page N° 15

www.ti.com Kit Operation Figure 6. Device Controls Tab 6.8.1 Control Register 1 Tab The Transfer Mode control lets the user select between continuous data transfer mode or programming mode. In the continuous data transfer mode, only audio data is sent and received through the serial audio bus. In the programming mode, control data is sent and received through the serial audio bus. The Data Format Mode, if set to 15 bits + 1, allows the codec to run in continuous mode and switch to programming mo

Résumé du contenu de la page N° 16

Kit Operation www.ti.com Figure 7. Control Register 1 Tab 6.8.2 Control Register 2 Tab The Turbo Mode control (Figure 8) sets the SCLK frequency to 16×FS×(number of devices)×mode or MCLK÷P, where number of devices is the number of codecs in cascade (default=1) and the mode is 1 for continuous data transfer mode and 2 for programming mode. The Host Port Control can be used to assign different functions to the SDA pin or to set SCL and SDA for I2C or S2C. When using the USB-MODEVM Audio Interface

Résumé du contenu de la page N° 17

www.ti.com Kit Operation Figure 8. Control Register 2 Tab 6.8.3 Control Register 3 Tab The Control Register 3 Tab (Figure 9) allows the user to set the DAC Oversampling Rate (OSR), set the Asynchronous Sampling Rate Factor and power down the ADC or DAC with the Power Down Controls. The indicator below each power down switch will light when on only if the register data sent by pressing the Program Device button is acknowledged. The USB-MODEVM Audio Interface Configuration currently allows a fixed

Résumé du contenu de la page N° 18

Kit Operation www.ti.com are merely for illustration; what is actually written to registers 4A and 4B are the values of P, M and N only. The USB-MODEVM Audio Interface Configuration is set up for an MCLK=11.2896 MHz, so P, M and N must satisfy the FS equation and the SCLK equation in Turbo Mode for that configuration. If using the External Audio Interface Configuration, the divider values can be set to anything specified in the TLV320AIC12K/14K datasheet. Figure 10. Control Register 4 Tab 6.8.5

Résumé du contenu de la page N° 19

www.ti.com Kit Operation Please refer to Appendix A for details. Note that the ring contact in J8 is not connected. c. MICIN with external common mode (pseudo-differential) - In this mode, the single ended input is connected through ac-coupling to MICIN and the bias voltage used to generate the signal is also ac coupled to INM1. To use this mode, jumper W11 must be installed on pins 1-2. Jumper W12 must be installed if using the on-board electret microphone (MK1), otherwise a microphone can be c

Résumé du contenu de la page N° 20

Kit Operation www.ti.com Figure 13. Command Line Interface Tab A script is loaded into the command buffer, either by operating the controls on the other tabs or by loading a script file or preset. When executed, either by loading commands from other tabs, loading a preset or pushing the Execute Command Buffer button, an array containing executed commands will be displayed on the Command History tab. Additionally, the return packet of data which results from the last command executed will be disp


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