Texas Instruments TLV320AIC12KEVMB-K - Manuals

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 Connecte...

4 Power Supplies 4.1 Stand-Alone Operation 4.2 USB-MODEVM Interface Power 5 EVM Operation Power Supplies www.ti.com J3 provides connection to the common power bus for the TLV320AIC12KEVMB/14KEVMB. Power issupplied on the pins listed in Table 4 . Table 4. Power Supply Pinout SIGNAL PIN NUMBER SIGNAL ...

5.1 Analog Input 5.2 Analog Output 5.3 Digital Control 5.4 Default Jumper Locations 6 Kit Operation 6.1 TLV320AIC12KEVMB-K/14KEVMB-K Block Diagram www.ti.com Kit Operation The analog input sources can be applied directly to J2 (top or bottom side). The analog inputs may alsobe accessed through J8 an...

EVM Position 2 EVM Position 1 TLV320AIC12KEVMB/14KEVMB Control Interface TAS1020B USB 8051 Microcontroller USB I C 2 SMARTDM Audio Interface TLV320AIC12K/14K Kit Operation www.ti.com Figure 1. TLV320AIC12KEVMB-K/14KEVMB-K Block Diagram The USB-MODEVM Interface board is intended to be used in USB mod...

6.2 Installation www.ti.com Kit Operation Table 6. USB-MODEVM SW2 Settings SW-2 SWITCHNUMBER LABEL SWITCH DESCRIPTION USB-MODEVM EEPROM I 2 C Address A0 1 A0 ON: A0 = 0OFF: A0 = 1 USB-MODEVM EEPROM I 2 C Address A1 2 A1 ON: A1 = 0OFF: A1 = 1 USB-MODEVM EEPROM I 2 C Address A2 3 A2 ON: A2 = 0OFF: A2 ...

6.3 USB-MODEVM Interface Board 6.4 Program Description Kit Operation www.ti.com Figure 2. Default Software Screen 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-bas...

6.5 Indicators and Main Screen Controls 6.6 Information Tab www.ti.com Kit Operation 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. At the...

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 ). The External Audio Interface Configuration only allows I 2 C communication between the host computer and the TLV320AIC12K/14K. In this configurat...

6.7 Preset Configurations Tab www.ti.com Kit Operation Figure 4. Sounds and Audio Devices Properties 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 TLV320AIC12...

6.8 Device Controls Tab Kit Operation www.ti.com Figure 5. Preset Configurations 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 controlsand an indi...

6.8.1 Control Register 1 Tab www.ti.com Kit Operation Figure 6. Device Controls 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 audiobus. In the...

6.8.2 Control Register 2 Tab Kit Operation www.ti.com Figure 7. Control Register 1 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 contin...

6.8.3 Control Register 3 Tab 6.8.4 Control Register 4 Tab www.ti.com Kit Operation Figure 8. Control Register 2 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 D...

6.9 Command Line Interface Tab 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 vo...

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 loadinga script file or preset. When executed, either by loading commands from other tabs, loading a preset or pushing the ExecuteComman...

www.ti.com Kit Operation Figure 14. File Menu The Options menu ( Figure 15 ) provides two settings suitable for command line interface users and for troubleshooting. These settings allows the user to evaluate the device in its most basic form. The first option, Hardware Reset on Startup , enables (c...

6.9.1 USB-MODEVM Protocol Kit Operation www.ti.com Figure 16. Help The actual USB protocol used as well as instructions on writing scripts are detailed in the followingsubsections. While it is not necessary to understand or use either the protocol or the scripts directly,understanding them may be he...

www.ti.com Kit Operation The data packet consists of the following bytes, shown in Table 8 : Table 8. Data Packet Configuration BYTE NUMBER TYPE DESCRIPTION Specifies serial interface and operation. The two values are logically OR'd.Operation: READ 0x00 WRITE 0x10 Interface: 0 Interface GPIO 0x08 SP...

Kit Operation www.ti.com If the command is sent with no problem, the returning byte [0] should be the same as the sent onelogically or'd with 0x20 - in the second example above (fast mode), the returning packet should be: [0] 0x32 [1] 0x80 [2] 0x02 [3] 0x01 [4] 0x45 [5] 0xA0 If for some reason the i...

6.9.1.1 GPIO Capability www.ti.com Kit Operation The USB-MODEVM has seven GPIO lines. The user can access them by specifying the interface to be0x08, and then using the standard format for packets—but addresses are unnecessary. The GPIO linesare mapped into one byte (see Table 9 ): Table 9. GPIO Pin...

6.9.2 Writing Scripts Kit Operation www.ti.com A script is simply a text file that contains data to send to the serial control buses. The scripting language isquite simple, as is the parser for the language. Therefore, the program is not very forgiving about mistakesmade in the source script file, b...

www.ti.com Kit Operation For example, to write the values 0x45 0xA0 to an I 2 C device with a slave address of 0x80, starting at a register address of 0x01, one would write: #example scripti i2cfastw 80 01 45 A0r 80 01 02 This script begins with a comment, specifies that a fast I 2 C bus will be use...

Kit Operation www.ti.com Here is an example of a script: # TLV320AIC12K/14K# This configuration allows playing audio to the DAC from any media player on# a computer and recording from the ADC on audio recording software. Pin# MICIN is configured as the input. The input can be heard via OUTP1/M1 and#...

7 EVM Bill of Materials www.ti.com EVM Bill of Materials Table 10 and Table 11 contain a complete bill of materials for the modular TLV320AIC12KEVMB/14KEVMB and the USB-MODEVM Interface Board. Table 10. TLV320AIC12KEVMB/14KEVMB Bill of Materials REFERENCE DESIGNATOR DESCRIPTION MANUFACTURER MFG PART...

EVM Bill of Materials www.ti.com Table 11. USB-MODEVM Bill of Materials Designators Description Manufacturer Mfg. Part Number R4 10 Ω 1/10W 5% chip resistor Panasonic ERJ-3GEYJ100V R10, R11 27.4 Ω 1/16W 1% chip resistor Panasonic ERJ-3EKF27R4V R20 75 Ω 1/4W 1% chip resistor Panasonic ERJ-14NF75R0U R...

Appendix A TLV320AIC12KEVMB/14KEVMB Schematic Appendix A www.ti.com The schematic diagram is provided as a reference. 32 TLV320AIC12KEVMB/14KEVMB Schematic SLAU229B – October 2007 – Revised August 2008 Submit Documentation Feedback

1 2 3 4 5 6 A B C D 6 5 4 3 2 1 D C B A ti 12500 TI Boulevard, Dallas, TX 75243 USA TITLE SHEET OF FILE SIZE DATE REV 19-Aug-2008 DRAWN BY ENGINEER REVISION HISTORY REV ENGINEERING CHANGE NUMBER APPROVED B DATA ACQUISITION PRODUCTS HIGH-PERFORMANCE ANALOG DIVISION SEMICONDUCTOR GROUP Jorge Arbona St...

Appendix B USB-MODEVM Schematic www.ti.com Appendix B The schematic diagram is provided as a reference. SLAU229B – October 2007 – Revised August 2008 USB-MODEVM Schematic 33 Submit Documentation Feedback

FCC Warnings This equipment is intended for use in a laboratory test environment only. It generates, uses, and can radiate radio frequency energy andhas not been tested for compliance with the limits of computing devices pursuant to subpart J of part 15 of FCC rules, which are designedto provide rea...

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