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SC9256 Datasheet

  • SC9256

  • PLL FOR DTS

  • 223.63KB

  • 24頁

  • SILAN

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Silan
Semiconductors
PLL FOR DTS
DESCRIPTION
The SC9256 is phase-locked loop (PLL) LSIs for digital tuning
systems (DTS) with built in 2 modulus prescalers.
All functions ate controlled through 3 serial bus lines. These LSIs
are used to configure high-performance digital tuning system.
SC9256
DIP-16-300-2.54
FEATURES
* Optimal for configuring digital tuning systems in high-fi tuners
and car stereos.
* built-in prescalers. Operate at input frequency ranging from
30~150 MHz during FM
IN
input (with 2 modulus prescaler) and
at 0.5~40MHz during AM
IN
input (with 2 modulus prescaler or
direct dividing).
* 16 bit programmable counter, dual parallel output phase
comparator, crystal oscillator and reference counter.
* 3.6MHz, 4.5MHz, 7.2MHz or 10.8MHz crystal oscillators can be
used.
* 15 possible reference frequencies. ( When using 4.5MHz crystal)
* Built-in 20 bit general-purpose counter for such uses as
measuring intermediate frequencies (IF
IN1
and IF
IN2
)
* High-precision (鹵0.55~鹵7.15碌s) PLL phase error detection.
* Numerous general-purpose I/O pins for such uses as peripheral
circuit control.
* 3 N-channel open-drain output ports (OFF withstanding
voltage:12V) for such uses as control signal output.
* Standby mode function (turns off FM, AM
and
IF
amps)
to
save
current
consumption.
* All functions controlled through 3 serial
bus lines.
* CMOS structure with operating power
supply range of V
DD
=5.0鹵0.5V.
SOP-16-300-1.27
ORDERING INFORMATION
Device
SC9256
SC9256S
Package
DIP-16-300-2.54
SOP-16-300-1.27
PIN CONFIGURATION
XT
XT
PERIOD
CLOCK
DATA
OT-1
OT-2
OT-3
1
2
3
4
5
6
7
8
16 DO2/OT-4
15 DO1
14 I/O-5/IF
IN1
SC9256
13 I/O-6/IF
IN2
12 GND
11 FM
IN
10 AM
IN
9
V
DD
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
REV: 1.0
2002.01.30.
1

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