BU9458KV Application Note Rev. 0.02
PROPRIETARY AND CONFIDENTIAL
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13/42-
2009/05/28
V. Sequence Control
This chapter sets an example of sequence control techniques required when using BU9458KV. Details differ
depending on the application. This means that the sequence introduced in this chapter is not always the most effective
technique. You should also keep in mind that the given example will not guarantee the perfect operation.
V.1 MODE1
MODE1 is a standalone mode which enables standalone operations of “play”, “forward”, etc. using the KEY input
function of LSI.
V.1.1 Power ON Sequence
(1) POWER ON
Turn ON the power switch.
(2) Wait until PLL oscillation is stabilized
Input clock to XIN_PLL and wait until the internal PLL oscillation
is stabled.
(3) System reset
Input L for RESETX input for more than 5 µs and then input H.
(4) Wait until internal reset is cleared
Wait for more than 10 ms until the internal reset is cleared after
system reset is cleared.
(5) Start operation
Figure V.1.1 Power ON Sequence
(4) Wait until internal reset is
cleared.
(5) Start operation
(3) System reset
(2) Wait until PLL oscillation is
stabilized.
(1) POWER ON
