Texas Instruments TLV320DAC23 9 I2C Adjust Button, 10 I2C Bypass Check Box, DataLog On Check Box

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Main Panel

4.4.9I2C Adjust Button

Pressing this button opens a panel that allows adjustment of the timing period used for I2C communications between the PC and the EVM. See Section 4.5.

4.4.10I2C Bypass Check Box

This check box allows the user to run the software without a device connected to the parallel port.

4.4.11DataLog On Check Box

This check box allows the user to record the information sent over I2C. The data is always stored in a file called DataLog.txt. The { within the file represents a valid I2C start command. The } within the file represents a valid I2C stop command.

4.4.12View Registers Button

When the View Registers button is clicked, the GUI opens a second panel. This panel shows all the TLV320AIC23/DAC23 EVM2 registers. A function name is displayed for each bit in each register, and the values of the bits can be viewed or changed. A complete description including all the registers and other functionality of the second panel is in Section 4.6.

4.4.13Dig Loopback Check Box

Checking this box connects DOUT to DIN via a multiplexer.

4.4.14Digital Control Button

Clicking the Digital Control button opens a panel that allows setting of the digital audio controls (see Section 4.6.8). The digital audio controls can also be set by putting values directly into the Audio (Digital) register on the Registers panel (see Section 4.6).

4.4.15Analog Control Button

Clicking the Analog Control button opens a panel that allows setting of the analog audio controls (see Section 4.6.7). The analog audio controls can also be set by putting values directly into the Audio (Analog) register on the Registers panel (see Section 4.6).

4.4.16Format Control Button

Clicking the Format Control button opens a panel that allows setting of the audio format controls (see Section 4.6.10). The audio format controls can also be set by putting values directly into the Audio (Format) register on the Registers panel (see Section 4.6).

4.4.17Normal Mode and USB Mode Radio Buttons

For information on the proper setting of normal or USB mode, see the TLV320AIC23 data manual.

4-6

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Contents User’s Guide Important Notice EVM Important Notice EVM Warnings and Restrictions About This Manual How to Use This ManualRead This First Related Documentation From Texas InstrumentsTrademarks Contents Figures Introduction Page Quick Start-Up Page Theory of Operation TopicTLV320AIC23 EVM2 Parts Location Diagram Photographs of EVM TLV320AIC23 EVM2 Top ViewTLV320AIC23 EVM2 Bottom View Parallel Port Interface Board Top View Analog Connections Jumper SettingsTLV320AIC23 EVM2 Power Master Clock TLV320AIC23 EVM2 FeaturesDigital I/O Digital LoopbackPage Software DASCCTAIC23 Installation AIC23/DAC23 EVM2 Connection Diagram Main Panel DASCCTAIC23 Start-UpDASCCTAIC23 Overview About ButtonReset Button Line Input VolumeHeadPhone Volume Message Area10 I2C Bypass Check Box 9 I2C Adjust ButtonNormal Mode and USB Mode Radio Buttons DataLog On Check BoxFrequency Display Areas I2C AdjustClock Select Button Preset Modes View RegistersMode Files Vol HeadPhone Register 6 OK, Apply, and Cancel ButtonsVol Line Input Register Audio Analog RegisterAnalog Control Audio Digital RegisterPower Down Register Audio Format RegisterFormat Control Sampling Rate RegisterClock Setup Interface Activate RegisterI2C Error Messages Device can be undeterminedPage Kit Contents TLV320AIC23 EVM2 Kit Contents Bill of Materials Description Qty Part Number Mfr Ref. DesERJ-8RQJ3R3V Circuit Card and Schematic Thu Nov 29 104853 Thu Nov 29 104627 Thu Nov 29 104713 Page
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