4.5 Audio Interface Tab
TLV320AIC3007EVM Software
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Figure 8. Audio Interface Tab
The Audio Interface tab (Figure 8 ) allows configuration of the audio digital data interface to theTLV320AIC3007.
The interface mode can be selected using the Audio Serial Data Mode control—selecting either I
2
Smode, DSP mode, or Right- or Left-Justified modes. Word length can be selected using the Audio SerialWord Length control, and the bit clock rate can also be selected using the Bit Clock Mode rate control.The Audio Data Word Offset, used in TDM mode (see the product data sheet ) also can be selected onthis tab.
Along the bottom of this tab are controls for choosing the BLCK and WCLK as being either inputs oroutputs. With the codec configured in Slave mode, both the BCLK and WCLK are set to inputs. If thecodec is in Master mode, then BCLK and WCLK are configured as outputs. Additionally, two buttonsprovide the options for 3-stating the DOUT line when no valid data is available and for transmitting BLCKand 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 samplerates (see the TLV320AIC3007 data sheet). The channels can be soft-muted when doing theRe-synchronization if the Soft Mute button is enabled.
The default mode for the EVM is configured as 44.1-kHz, 16-bit, I
2
C words, and the codec is a slave(BCLK and WCLK are supplied to the codec externally). For use with the PC software and theUSB-MODEVM, the default settings must be used; no changes to the software are required.
TLV320AIC3007EVM-K 14 SLAU286 – June 2009Submit Documentation Feedback