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Part Number: TLV320AIC3254
How do I configure beep generator in the TLV320AIC3254 and other similar devices in the family?
Regards,Collin WellsPrecision ADC Applications
The Beep Generator configuration is described in this application report: http://www.ti.com/lit/an/slaa446/slaa446.pdf
Below is an example script for configuring the TLV320AIC3254EVM-K for beep generation. Note that the configuration for other EVMs will be different, but the beep generator section would be the same. The important detail is that PRB_P25 is selected and the MDAC*DOSR value is proper (refer to the resource class (RC) in the device datasheet and application reference guide).
For the devices described above, whenever the Beep command is issued (Page 0 / Register 71, D7 = '1'), NDAC needs to be off to prevent audio glitches. The following script provides an example of doing this on-the-fly without audible clicks or pops:
w 30 00 00 # Page 0 w 30 40 0C # Mute DACs f 30 26 xxx1xxx1 # Wait for mute flag w 30 0B 02 # Turn off NDAC w 30 47 8C # Beep!, -6dB Gain w 30 0B 82 # Turn on NDAC w 30 40 00 # Un-mute DACs f 30 47 0xxxxxxx # Wait for beep to finish
The command 'f' polls registers until a bit is set '1' or cleared '0'. The 'x' is don't care.
TLV320AIC3204, TLV320AIC3206, TLV320AIC3253, TLV320AIC3254, TLV320AIC3256, TLV320DAC3203, TLV320AIC3100, TLV320AIC3110, TLV320AIC3111, TLV320AIC3120, TLV320AIC3136
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