BU9409FV_12 Datasheet, PDF (52/58 Pages) Rohm – 32bit Audio DSP

BU9409FV
Technical Note
14. Notes at the Time of Reset
Since the state of IC is not decided, please make it into RESETX=L at the time of a power supply injection, and surely apply
reset.
Reset of BU9409FV is performing noise removal by MCLK.
Therefore, in order to apply reset, a MCLK clock pulse is required of the state of RESETX=L more than 10 times.
The power-on reset after a power supply injection, and when you usually apply reset at the time of operation, please be sure
to carry out in the state where the clock is inputted, from MCLK.
15. Read-out of Soft Transition Flag
It is set to &hF4[0] =H when BASS, MIDDLE, TREBLE or P2Bass, and P2Treble are soft transiting.
It is possible to check whether soft transition is completed by reading &hF4 [0]
Soft transition will be completed if the read-out result of &hF4 [0] is L.
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2012.03 - Rev.A