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TSW-102-07-L-D Datasheet(PDF) 15 Page - Texas Instruments |
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TSW-102-07-L-D Datasheet(HTML) 15 Page - Texas Instruments |
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15 / 60 page  www.ti.com 4.7 Audio Interface Tab TLV320AIC3104EVM Software Figure 9. Audio Interface Tab The Audio Interface tab (Figure 9) allows configuration of the audio digital data interface to the TLV320AIC3104. The interface mode may be selected using the Transfer Mode control—selecting either I2S mode, DSP mode, or Right- or Left-Justified modes. Word length can be selected using the Word Length control, and the bit clock rate can also be selected using the Bit Clock rate control. The Data Word Offset, used in TDM mode (see the TLV320AIC3104 data sheet) can also be selected on this tab. Along the bottom of this tab are controls for choosing the BLCK and WCLK as being either inputs or outputs. With the codec configured in Slave mode, both the BCLK and WCLK are set to inputs. If the codec is in Master mode, then BCLK and WCLK are configured as outputs. Additionally, two buttons provide the option for placing the DOUT line in a 3-state mode when there is not valid data and transmitting BLCK and WCLK when the codec is powered down. Re-synchronization of the audio bus is enabled using the controls in the lower right corner of this screen. Re-synchronization is done if the group delay changes by more than ±FS/4 for the ADC or DAC sample rates (see the TLV320AIC3104 data sheet). The channels can be soft muted when doing the re-sync if the Soft Mute button is enabled. In the upper right corner of this tab is the Digital Mic Functionality control. The TLV320AIC3104 can accept a data stream from a digital microphone, which would have its clock pin connected to the TLV320AIC3104 GPIO1 pin, and the mic data connected to the GPIO2 pin. Once the digital microphone functionality is enabled, the Digital Mic/ADC Selection selection allows the user to choose if one or two digital microphones are connected to the codec. If only one digital microphone is connected, then the remaining ADC can be used with an analog input signal from the analog input pins. Refer to section SLAU218 – August 2007 TLV320AIC3104EVM and TLV320AIC3104EVM-PDK 15 Submit Documentation Feedback |
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