SC5388S Просмотр технического описания (PDF) - Silan Microelectronics
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SC5388S Datasheet PDF : 9 Pages
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Silan
Semiconductors
SC5388
1. CYCLIC KEY SELECTION MODE
As seen in the table above, the cyclic key selection mode is active when the SEL pin is floating or “high”. Under
this mode, any of the sound selections(Flat, Rock, Pops, classic, Jazz) may be selected by pressing the CYC key.
The default value is the Flat Mode. This Means that when power is turned ON, the mode is active. Pressing the
Cyclic Key lets you go from one sound selection to the other in the following order: Flat→ Rock →Pops→ Classic
→ Jazz. That is, press the CYC key to activate the next mode. The BB key controls the Bass Booster. When the
power is turned ON, the bass Booster is OFF.
2. DIRECT KEY SELECTION MODE
The direct key selection mode is active when the SEL pin is set to “LOW”. As the name implies, you can directly
select the sound selection you like simply by pressing the respective keys. This means, that to select the JAZZ
mode, press the JAZZ key, CLASSIC Mode ,press the CLASSIC key and so forth. Take note that when the power
is turned On, the Flat Mode is active. The Bass Booster is independent of the key/sound mode selected and may
be turned ON or OFF at any time.
3. FREQUENCY RESPONSE
The Fig.1 ~ Fig.5 illustrate the various frequency response under the various sound selection(Flat, Rock, Pops,
Classic, Jazz, and Bass Booster).
Different sound selections exhibit different frequency gains at different frequency levels. Please refer to the table
below:
Sound Selection
f=80Hz
Typical
f=1kHz f=10kHz
Unit
Flat
1.7
-0.8
-1.3
Rock
10.0
1.5
7.0
Pops
6.5
0.5
7.0
Classic
6.0
0.5
1.0
Jazz
10.0
1.2
3.3
dB
Flat + Bass Booster
8.5
0.7
1.0
Rock + Bass Booster
11.0
2.0
7.0
Pops + Bass Booster
9.5
1.0
7.0
Classic + Bass Booster
9.5
1.0
1.0
Jazz + Bass Booster
11.0
2.0
2.5
TREBLE AND BASS ADJUSTMENTS
It is general knowledge that different individuals have different listening preference. The application circuit of
SC5388 included in this specification has been designed for the taste general listening public; however, you can
make the necessary adjustment to suit your personal taste. Please refer to the Section below.
1. TREBLE ADJUSTMENT
The Treble adjustment is made by changing the value of the 2 capacitors connected between TL-OUTL, TR-
OUTR, Please refer to Fig. 6.
As the capacitor value becomes bigger, the treble of the gain frequency curve is shifted down. Likewise, as the
capacitor value become smaller, the treble gain frequency curve shifts the opposite direction. Referring to the Fig.6.
we see that at 6dB, different capacitor values exhibit different frequency response. Capacitor value 1800pF has a
lower frequency gain response than 1200pF capacitor.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
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