SLAS666B January 2010 – October 2018 TLV320DAC3101
PRODUCTION DATA.
The digital filter coefficients must be programmed through the I2C interface. All digital filtering for the DAC signal path must be loaded into the RAM before the DAC is powered on. Note that default ALLPASS filter coefficients for programmable biquads are located in boot ROM. The boot ROM automatically loads the default values into the RAM following a hardware reset (toggling the RESET pin) or after a software reset. After resetting the device, loading boot ROM coefficients into the digital filters requires 100 μs of programming time. During this time, reading or writing to page 8 through page 15 for updating DAC filter coefficient values is not permitted. The DAC should not be powered up until after all of the DAC configurations have been done by the system microprocessor.