BU9414FV Datasheet, PDF (43/61 Pages) Rohm – 32bit Audio DSP

BU9414FV
Technical Note
4-26. Sub output clipper
The case when rated output (practical maximum output) of the television is measured, total harmonic distortion + noise
(THD+N) measures at the place of 10%. It can obtain the rated output of 10W and 5W for example making use of the
amplifier of 15W output, because it is possible to clip with optional output amplitude by using the clipper function.
Clip Level
Please designate &h30 [7] as” H when
function.
Default = 0
Select Address
&h30 [ 7 ]
Value
0
1
using sub output clipper
Operating explanation
Clipper function is not used
Clipper function is used
As for clip level, it sets with superior 8 bits &h31 [7: 0] and subordinate 8 bits &h32 [7: 0].
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
011111111111111111111111
100000000000000000000000
0
clip_level[15:0]
0000000
1
~clip_level[15:0]
1111111
Maximum value
Minimum value
A positive clip level
A negative clip level
g value is made small, clip level becomes narrow.
As for negative clip level, the reversal data of positive clip level is set.
When
settin
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2012.03 - Rev.A