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Kit Operation

Figure 12. Shelf Filters

To use these filters, enter the gain desired and the corner frequency. Choose the mode to use (Bass or
Treble); the response will be plotted on the Effect Filter Response graph.

6.10.4

EQ Filters

EQ, or parametric, filters can be designed on this tab. Enter a gain, bandwidth, and a center frequency
(Fc). Either bandpass (positive gain) or band-reject (negative gain) filters can be created.

Figure 13. EQ Filters

TLV320AIC32EVM and TLV320AIC32EVM-PDK User's Guide

22

SBAU113 – November 2005

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Содержание TLV320AIC32EVM

Страница 1: ...S025 REG1117 3 3 SBVS001 TPS767D318 SLVS209 SN74LVC125A SCAS290 SN74LVC1G125 SCES223 SN74LVC1G07 SCES296 Contents 1 EVM Overview 2 2 Analog Interface 3 3 Digital Interface 4 4 Power Supplies 5 5 EVM O...

Страница 2: ...udio codec Modular design for use with a variety of digital signal processor DSP and microcontroller interface boards The TLV320AIC32EVM PDK is a complete evaluation kit which includes a universal ser...

Страница 3: ...Right Plus J1 5 LINE1L Left Input 1 J1 6 LINE1R Right Input 1 J1 7 LINE2L Left Input 2 J1 8 LINE2R Right Input 2 J1 9 AGND Analog Ground J1 10 MIC3L Left Input 3 J1 11 AGND Analog Ground J1 12 MIC3R...

Страница 4: ...These headers sockets provide access to the digital control and serial data pins of the device Consult Samtec at www samtec com or call 1 800 SAMTEC 9 for a variety of mating connector options Table...

Страница 5: ...ed to J4 I2 C is actually routed to both connectors however the device is connected only to J4 J3 provides connection to the common power bus for the TLV320AIC32EVM Power is supplied on the pins liste...

Страница 6: ...tion lower position looking at the board with text reading right side up If 1 8VD and 3 3VD are supplied externally disable the onboard regulators by placing SW1 switches in the OFF position Each powe...

Страница 7: ...3 When connecting 2 3 mic bias comes from the MICBIAS pin on the device when connecting 1 2 mic bias is supplied from the power supply through a resistor which the user must install JMP11 Installed W...

Страница 8: ...MODEVM Interface board while the daughtercard is the TLV320AIC32EVM described previously in this manual Figure 1 TLV320AIC32EVM PDK Block Diagram The USB MODEVM Interface board is intended to be used...

Страница 9: ...positions 1 through 7 should be set to ON while SW 2 8 should be set to OFF Ensure that the TLV320AIC32EVM is installed on the USB MODEVM Interface board aligning J1 J2 J3 J4 J5 with the corresponding...

Страница 10: ...for modular EVMs or one double wide serial modular EVM may be installed Since the TLV320AIC32EVM is a double wide modular EVM it is installed with connections to both EVM positions which connects the...

Страница 11: ...is screen the short circuit indicators show when a short circuit condition is detected if this feature has been enabled Below the short circuit indicators is a bar graph that shows the amount of gain...

Страница 12: ...e output waveforms for both left and right channels are displayed in the graph at the bottom of the screen in Figure 3 Figure 3 Audio Generator Screen TLV320AIC32EVM and TLV320AIC32EVM PDK User s Guid...

Страница 13: ...he ADCs Figure 4 Audio Analyzer Screen The analyzer screen features a graph of the input signals both left and right channels in a time domain display at the top of the screen and in the frequency dom...

Страница 14: ...grade measurements even though there is no audible noise The Audio Input ADC Tab is laid out like an audio mixing console Each input channel has a vertical strip that corresponds to that channel LINE1...

Страница 15: ...unselected inputs to the ADC channels to be weakly biased to the ADC common mode voltage Below these controls are the controls for the ADC PGA the master volume controls for the ADC inputs Each chann...

Страница 16: ...transmitting BLCK and WCLK when the codec is powered down Re sync of the audio bus is enabled using the controls in the lower right corner of this screen Re sync is done if the group delay changes by...

Страница 17: ...ttings can be loaded automatically by pushing the Load EVM Clock Settings button at the bottom of this tab Note that changing any of the clock settings from the values loaded when this button is pushe...

Страница 18: ...he TLV320AIC32 datasheet for an explanation of these parameters The parameters can be set by clicking on the up down arrows of the P K and R combo boxes or they can be typed into these boxes The value...

Страница 19: ...annel using the Enable AGC button Target gain Attack time in milliseconds Decay time in milliseconds and the Maximum PGA Gain Allowed can all be set respectively using the four corresponding knobs in...

Страница 20: ...discussion in Section 6 8 See Figure 9 Figure 9 Filters Tab The right hand side of this tab shows a display which plots the magnitude and phase response of each biquad section plus the combined respo...

Страница 21: ...on a tab control in the lower left corner of the screen When a filter type is selected and suitable input parameters defined the response will be shown in the Effect Filter Response graph Regardless o...

Страница 22: ...response will be plotted on the Effect Filter Response graph 6 10 4 EQ Filters EQ or parametric filters can be designed on this tab Enter a gain bandwidth and a center frequency Fc Either bandpass pos...

Страница 23: ...the filter type will be shown ripple for example with Chebyshev filters etc Enter the desired design parameters and the response will be shown Figure 14 Analog Simulation Filters 6 10 6 Preset Filter...

Страница 24: ...the coefficients for the de emphasis filter response desired While on this tab the de emphasis response will be shown on the Effect Filter Response graph however note that this response is not include...

Страница 25: ...s Figure 17 User Filters 6 10 9 3D Effect The 3D effect is described in the TLV320AIC32 datasheet It uses the two biquad sections differently than most other effect filter settings To use this effect...

Страница 26: ...set up to allow powering of each DAC individually and setting the output level Each channel level can be set independently using the corresponding Volume knob Alternately by checking the Slave to Rig...

Страница 27: ...volume is controlled by the knob at the far right of these panels The output can be muted or gain up to 9dB can be applied Power for the line output can also be controlled using the button below this...

Страница 28: ...or divider off the AVDD_DAC supply or a bandgap reference See the TLV320AIC32 datasheet for more details on this option The outputs can be set to soft step their volume changes using the Output Volume...

Страница 29: ...is selected using the button located below the power button The COM outputs HPLCOM and HPRCOM can be used as independent output channels or can be used as complementary signals to the HPL and HPR out...

Страница 30: ...ritten and saved see Figure 22 This design allows the software to be used as a quick test tool or to help provide troubleshooting information in the rare event that the user encounters a problem with...

Страница 31: ...item is Exit which terminates the TLV320AIC32EVM software Figure 23 File Menu Under the Help menu is an About menu item which displays information about the TLV320AIC32EVM software The actual USB pro...

Страница 32: ...o 60 data bytes could be written at a time EP0 maximum length is 64 The return packet is limited to 42 bytes so advise only sending 32 bytes at any one time Example usage Write two bytes AA 55 to devi...

Страница 33: ...same as the sent one logically or d with 0x20 in our first example above the returning packet should be 0 0x31 1 0xA0 2 0x02 3 0x05 4 0xAA 5 0x55 If for some reason the interface fails for example the...

Страница 34: ...ored 2 0x01 length ALWAYS a 1 3 0x00 this value is ignored 4 0x40 01000000 You may also read back from the GPIO to see the state of the pins Let s say we just wrote the previous example to the port pi...

Страница 35: ...ue is expressed in hexadecimal and each byte must be separated by a space Commands are interpreted and sent to the TAS1020 by the program using the protocol described in Section 6 14 1 The first byte...

Страница 36: ...Command File from the File menu Locate your script and open it The script will then be displayed in the command buffer You may also edit the script once it is in the buffer but saving of the command...

Страница 37: ...3 3 U2 64K I2C EEPROM MicroChip 24LC64 I SN J10 J11 Screw terminal block On Shore Technology ED555 2DS 2 position J6 J7 J12 J14 Screw terminal block On Shore Technology ED555 3DS 3 position J8 J9 3 5...

Страница 38: ...50V ceramic TDK C1608C0G1H102J chip capacitor 5 NPO C15 0 1 F 16V ceramic TDK C1608X7R1C104K chip capacitor 10 X7R C16 C17 0 33 F 16V ceramic TDK C1608X5R1C334K chip capacitor 20 Y5V C9 C10 C11 C12 C...

Страница 39: ...L DV P J11B J12B J21B J22B 20 pin SMT socket Samtec SSW 110 22 F D VS K J13A J23A 10 pin SMT plug Samtec TSM 105 01 L DV P J13B J23B 10 pin SMT socket Samtec SSW 105 22 F D VS K J6 4 pin double row he...

Страница 40: ...www ti com Appendix A TLV320AIC32EVM Schematic Appendix A The schematic diagram is provided as a reference TLV320AIC32EVM Schematic 40 SBAU113 November 2005...

Страница 41: ...P17 SDA TP21 DRVSS TP25 HPLCOM R3 2 7K HEADSET OUTPUT C17 NI R7 0 C15 NI SDA C12 0 1uF C4 10uF C3 10uF 1 2 JMP8 1 2 JMP7 1 2 JMP5 1 2 JMP6 SCL R9 100K RESET AVDD_DAC DRVDD IN2L IN2R TP28 IN2L TP29 IN2...

Страница 42: ...D 18 SDA 20 CNTL 1 CLKX 3 CLKR 5 FSX 7 FSR 9 DX 11 DR 13 INT 15 TOUT 17 GPIO5 19 J5 DAUGHTER SERIAL A0 2 A1 4 A2 6 A3 8 A4 10 A5 12 A6 14 A7 16 REF 18 REF 20 A0 1 A1 3 A2 5 A3 7 AGND 9 AGND 11 AGND 13...

Страница 43: ...www ti com Appendix B USB MODEVM Schematic Appendix B The schematic diagram is provided as a reference SBAU113 November 2005 USB MODEVM Schematic 41...

Страница 44: ...C11 1uF C12 1uF USB SLAVE CONN EXT PWR IN 6 00 MHZ 6463996 RED 1OE 1 1A 2 1Y 3 2OE 4 2A 5 2Y 6 GND 7 3Y 8 3A 9 3OE 10 4Y 11 4A 12 4OE 13 VCC 14 U3 SN74LVC125APW 1OE 1 1A 2 1Y 3 2OE 4 2A 5 2Y 6 GND 7...

Страница 45: ...4 SCL 16 DGND 18 SDA 20 CNTL 1 CLKX 3 CLKR 5 FSX 7 FSR 9 DX 11 DR 13 INT 15 TOUT 17 GPIO5 19 J22 DAUGHTER SERIAL 5VD 5VA A0 2 A1 4 A2 6 A3 8 A4 10 A5 12 A6 14 A7 16 REF 18 REF 20 A0 1 A1 3 A2 5 A3 7 A...

Страница 46: ...or proceeding User assumes all responsibility and liability for proper and safe handling and use of the EVM and the evaluation of the EVM TI shall have no liability for any costs losses or damages re...

Страница 47: ...ute a license from TI to use such products or services or a warranty or endorsement thereof Use of such information may require a license from a third party under the patents or other intellectual pro...

Страница 48: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments TLV320AIC32EVM PDK TLV320AIC32EVM...

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