MPC9108D Ver la hoja de datos (PDF) - Motorola => Freescale
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MPC9108D Datasheet PDF : 4 Pages
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Advance Information
Multiple Output Clock
Synthesizer
The MPC9108 is a multiple CMOS output clock synthesizer targeted
for disk drive applications. The device interfaces to a 20MHz crystal as its
frequency source. From this source the device provides a buffered copy
of the 20MHz clock as well as synthesized 40MHz and 50MHz output
clocks.
• Fully Integrated PLL
• Fully Integrated Crystal Oscillator
• Low cost, low jitter design
• Low cost 8–lead SOIC packaging
In addition to the output clock frequencies, the MPC9108 also offers a
lock indicator output. When the internal PLL achieves phase and
frequency lock the CLK_LOCK signal will go HIGH. The pin will remain
HIGH unless the PLL loses lock due to input clock or power supply
disturbances.
The XTALIN pin (pin 1) can be over–driven with a standard 5V CMOS
signal. When an externally generated reference is used the XTALOUT pin
should be left open.
The MPC9108 operates from a 5.0V supply across the commercial
temperature range of 0°C to 70°C. The 8–lead SOIC package is used to
optimize board space efficiency as well as minimizing cost.
MPC9108
MULTIPLE OUTPUT
CLOCK SYNTHESIZER
D SUFFIX
PLASTIC SOIC
CASE 751–03
Pinout: 8–Lead SOIC
(Top View)
XTALIN 1
VDD 2
GND 3
CLK1 4
8 XTALOUT
7 CLK_LOCK
6 CLK2
5 CLK3
Pin Descriptions
Pin Name
Pin Number
XTALIN
1
VDD
2
GND
3
CLK1
4
CLK2
5
CLK3
6
CLK_LOCK
7
XTALOUT
8
I/O
Function
I
20MHz Crystal Connection, External Reference Point
– +5V Power Supply
– Ground
O 20MHz Output, Buffer Xtal Output
O 50MHz Output, PLL Controlled
O 40MHz Output, PLL Controlled
O HIGH When PLL is Locked
O Crystal Oscillator Connection
This document contains information on a new product. Specifications and information herein are subject to
change without notice.
1/97
© Motorola, Inc. 1997
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