CM5371
Preliminary
GEN-M7K-20 Data Sheet
A MEMBER OF THE PMC CLK FAMILY
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RM7000A, RM7000B, RM7000C
RM7065A, RM7065C
RM7900, RM7965
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Packaging
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20-pin TSSOP
Lead-free packaging
option available
ESD Protection
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2 kV HBM
500 V CDM
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I/O Characteristics
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Single-ended LVTTL output electrical interface.
The clock outputs have a nominal 50% duty cycle with maximum of
125ps cycle-to-cycle phase jitter.
Up to four copies of the output clock are generated, configured as two
pairs controlled by two “output enable” inputs.
Maximum output-to-output skew of 100ps.
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Spread Spectrum
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Provides optional spread spectrum phase modulation for EMI control.
Triangular spread spectrum modulation algorithm is pin-selectable
for common modulation frequencies and up-spread and down-spread
ranges.
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© Copyright PMC-Sierra, Inc. 2003. All rights reserved.
For a complete list of PMC-Sierra’s trademarks and registered
trademarks, visit:
http://www.pmc-sierra.com/legal/
Document No. PMC-2030358, Issue 2
in
er
In
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Output frequency is pin-selectable for support of frequencies up to
200 MHz, including common computing frequencies of 50.00 MHz,
66.67 MHz, 83.33 MHz, 100.00 MHz, 125.00 MHz, 133.33 MHz,
166.67 MHz, or 200.00 MHz.
on
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0 C to 70 C
(“Commercial”)
Input reference frequency is pin-selectable for support of common
inexpensive crystals up to 25.0000 MHz, including 10.00000 MHz,
14.31818 MHz, 16.00000 MHz, or 25.00000 MHz
Proprietary and Confidential to PMC-Sierra, Inc. and for its customers’ internal use.
W
ed
Temperature
Range
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s
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3.3 V
±
5%
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Uses a single crystal or single-ended reference input to generate clock
outputs with electrical characteristics and frequencies appropriate to
drive the MasterClock input of PMC-Sierra’s MIPS processors.
Contact Information:
Web Site:
http://www.pmc-sierra.com
Technical Support:
apps@pmc-sierra.com
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Power Supply
Clock Generation
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The CM5371 design also supports common frequencies for direct compatibility with PMC-Sierra’s other
product lines, such as MIPS 5K processors, gigabit SerDes and retimer devices, and telecommunication
physical layer devices. The CM5371is a precision, cost-effective and space-effective generator to source
up to four copies of a single-ended clock signal at frequencies up to 200 MHz.
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PMC-Sierra’s CM5371 clock generator is the industry’s only device tailored to drive the clocking inputs
of PMC-Sierra’s leading line of processors using MIPS 7K architectures, such as
3:
20
Flexible Clock Generator
PM
PMC [ PMC-SIERRA, INC ]
