ASM3P2855B PulseCore Semiconductor, ASM3P2855B Datasheet

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ASM3P2855B

Manufacturer Part Number
ASM3P2855B
Description
Custom Clock Generator
Manufacturer
PulseCore Semiconductor
Datasheet
Features
Product Description
ASM3P2855B is a part of the two chip custom clock
generator solution for NEC FAX system. Together with
ASM3P2854A, ASM3P2855B realizes all the eighteen
clocks
subsystems of the FAX system. It uses an inexpensive
24MHz crystal as the input to generate five synchronized
50MHz non-spread PCI clocks used by CPU, HDD, PCI
Analyzer,
Block Diagram
August 2007
rev 0.3
1715 S. Bascom Ave Suite 200 Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018
required
Generates Custom Clocks for FAX system from
an inexpensive 24MHz Crystal
7 x 50MHz synchronized non-Spread Spectrum
clocks (for CPU, ASIC2, ASIC3, HDD, and PCI
Analyzer, Ethernet, and LAN PHY)
1 x 50MHz for CPU Timer
ASIC2
XIN / CLKIN
by
XOUT
and
the
ASIC3,
various
Oscillator
Crystal
Notice: The information in this document is subject to change without notice.
Custom Clock Generator for Fax System
PulseCore Semiconductor Corporation
components
two
non-spread
www.pulsecoresemi.com
VDD
and
GND
PLL
synchronized 50MHz clocks for Ethernet and LAN PHY, a
50MHz clock for the CPU Timer, and a 19.52MHz non-
spread clock used by ASIC1 for Scanner. The custom
clock generator ASM3P2855B works with a Supply
Voltage of 3.3V. The device is available in a 16L TSSOP
Green package and in commercial temperature range.
VDD_FOUT
GND_FOUT
1x 19.52MHz non-spread clock for Scanner
REFOUT Clock
Supply Voltage 3.3 V +/- 0.3V
Available in 16L TSSOP, Green package
Commercial Temperature operation
7
REFOUT
50MHz
50MHZ
19.52MHz
ASM3P2855B
www.DataSheet4U.com

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ASM3P2855B Summary of contents

Page 1

... CPU, ASIC2, ASIC3, HDD, and PCI Analyzer, Ethernet, and LAN PHY) • 50MHz for CPU Timer Product Description ASM3P2855B is a part of the two chip custom clock generator solution for NEC FAX system. Together with ASM3P2854A, ASM3P2855B realizes all the eighteen clocks required ...

Page 2

... Custom Clock Generator for Fax System Notice: The information in this document is subject to change without notice 19.52MHz XOUT 2 15 50MHz VDD 3 14 50MHz 13 4 50MHz ASM3P2855B 5 12 REFOUT GND 6 11 50MHz 50MHz 7 10 50MHz 9 8 50MHz 50MHz Description www.DataSheet4U.com ASM3P2855B ...

Page 3

... Notice: The information in this document is subject to change without notice. Parameter Min Typ 0 +3.0 +3.3 +3.0 +3.3 Min GND - 0.3 2.0 @0.4V, VDD=3.3V) XOL @2.5V, VDD=3.3V) XOH = 10mA 10mA) 2.5 OH 3.0 3.0 www.DataSheet4U.com ASM3P2855B Rating Unit -0.5 to +4.6 V -0.5 to VDD+0.5 -65 to +125 °C 260 °C 150 ° Max Units °C +70 +3.6 V +3.6 V Typ Max Unit ...

Page 4

... Notice: The information in this document is subject to change without notice. Parameter At Pins 7,8,9,10,11,13,14,15 At Pin 12 At Pin 510Ω Crystal C1 C2 24MHz ± 50 ppm or better at 25°C -25°C to +85°C -40°C to +85°C 18pF 7pF maximum 25 Ω www.DataSheet4U.com ASM3P2855B Min Typ Max Unit 24 MHz 50 24 MHz 19.52 0.9 nS 0.7 nS 250 pS ...

Page 5

... A Seating Plane Dimensions Inches Min Max Min 0.043 0.002 0.006 0.05 0.031 0.041 0.80 0.007 0.012 0.19 0.004 0.008 0.09 0.193 0.201 4.90 0.169 0.177 4.30 0.026 BSC 0.252 BSC 0.020 0.030 0.50 0° 8° 0° www.DataSheet4U.com ASM3P2855B C θ L Millimeters Max 1.20 0.15 1.05 0.30 0.20 5.10 4.50 0.65 BSC 6.40 BSC 0.75 8° ...

Page 6

... G = GREEN PACKAGE, LEAD FREE, and RoHS DEVICE NUMBER X= Automotive (-40C to +125C Reserved 2 = Non PLL based 3 = EMI Reduction 4 = DDR support products 5 = STD Zero Delay Buffer PulseCore Semiconductor Mixed signal Product www.DataSheet4U.com ASM3P2855B Operating Range Commercial Commercial U = MSOP E = TQFP L = LQFP U = MSOP P = PDIP D = QSOP X = SC-70 ...

Page 7

... PulseCore against all claims arising from such use. Custom Clock Generator for Fax System Notice: The information in this document is subject to change without notice. www.DataSheet4U.com ASM3P2855B Copyright © PulseCore Semiconductor All Rights Reserved Preliminary Information Part Number: ASM3P2855B Document Version: 0 ...

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