BU9414FV Datasheet, PDF (53/61 Pages) Rohm – 32bit Audio DSP

BU9414FV
12. When the clock which exceeded the specification range from MCLK is inputted
When the frequency beyond fs=48kHz is inputted from
MCLK in the state where it was set as &h08 [5:4] =1, since
PLL follows inputted MCLK, as shown in the right figure,
when it exceeds Time Ter, it will exceed the frequency in
which DSP can operate.
In this case, an allophone may carry out irrespective of the
existence of data.
When you change into such a state, please carry out the
mute of the DAC immediately, apply reset (RESETB=L), and
do the work after reset release of Chapter 8.
The time of Ter serves as about 70 usec.
Frequency
PLL output frequency
48kHz
MCLK
inputted
frequency
Technical Note
The frequency limit
that DSP can
operate
Time
Ter
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2012.03 - Rev.A