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| March 2007 rev 0.2 Custom Clock Generator for Fax System Features * * 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) * 1x 50MHz for CPU Timer * * * * * ASM3P2855B 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 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 by the various components and 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, ASIC2 and ASIC3, two non-spread synchronized 50MHz clocks for Ethernet and LAN PHY, a 50MHz clock for the CPU Timer, and a 19.52MHz nonspread 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. Block Diagram VDD VDD_FOUT 19.52MHz XIN / CLKIN Crystal Oscillator PLL 7 50MHz XOUT 50MHZ REFOUT GND GND_FOUT PulseCore Semiconductor Corporation 1715 S. Bascom Ave Suite 200 Campbell, CA 95008 * Tel: 408-879-9077 * Fax: 408-879-9018 www.pulsecoresemi.com Notice: The information in this document is subject to change without notice. March 2007 rev 0.2 Pin Diagram ASM3P2855B XIN / CLKIN XOUT VDD 1 2 3 16 15 14 19.52MHz 50MHz 50MHz 50MHz REFOUT 50MHz 50MHz 50MHz VDD_FOUT 4 GND_FOUT GND 50MHz 50MHz 5 6 7 8 ASM3P2855B 13 12 11 10 9 Pin Description Pin# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name XIN / CLKIN XOUT VDD VDD_FOUT GND_FOUT GND 50MHz 50MHz 50MHz 50MHz 50MHz REFOUT 50MHz 50MHz 50MHz 19.52MHz Type I O P P P P O O O O O O O O O O Description Crystal connection or external reference frequency input. This pin has dual functions. It can be connected either to an external crystal or an external reference clock. Crystal connection. If using an external reference, this pin must be left unconnected. Power supply for the core Power supply for the output buffers. Ground connection for the output buffers Ground connection Synchronous 50MHz Clock Output Synchronous 50MHz Clock Output Synchronous 50MHz Clock Output Synchronous 50MHz Clock Output Synchronous 50MHz Clock Output 24MHz Reference Clock Out put Synchronous 50MHz Clock Output Synchronous 50MHz Clock Output 50MHz Clock Output 19.52MHz Clock Output Custom Clock Generator for Fax System Notice: The information in this document is subject to change without notice. 2 of 7 March 2007 rev 0.2 Absolute Maximum Ratings Symbol VDD, VDD_FOUT VIN TSTG Ts TJ TDV ASM3P2855B Parameter Power Supply Voltage relative to GND Input Voltage relative to GND (Input Pins) Storage temperature Max. Soldering Temperature (10 sec) Junction Temperature Static Discharge Voltage (As per JEDEC STD22- A114-B) Rating -0.5 to +4.6 -0.5 to VDD+0.5 -65 to +125 260 150 2 Unit V C C C KV Note: These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect device reliability. Recommended Operating Conditions Symbol TA VDD VDD_FOUT Parameter Operating Temperature Core Voltage Output Voltage Min 0 +3.0 +3.0 Typ +3.3 +3.3 Max +70 +3.6 +3.6 Units C V V DC Electrical Characteristics Symbol VIL VIH IIL IIH IXOL IXOH VOL VOH IDD ICC VDD VDD_FOUT tON ZOUT * XIN is pulled low Parameter Input low voltage Input high voltage Input low current Input high current XOUT output low current (VXOL@0.4V, VDD=3.3V) XOUT output high current (VXOH@2.5V, VDD=3.3V) Output low voltage (VDD = 3.3V, IOL = 10mA) Output high voltage (VDD = 3.3V, IOH = 10mA) Static supply current* Dynamic supply current ( VDD =3.3V) Operating Voltage Operating Voltage Power-up time (first locked cycle after power-up) Output impedance Min GND - 0.3 2.0 Typ Max 0.8 VDD + 0.3 -35 35 Unit V V A A mA mA 3 3 0.4 2.5 10 28 3.0 3.0 3.3 3.3 29 3.6 3.6 5 V V mA mA V V mS Custom Clock Generator for Fax System Notice: The information in this document is subject to change without notice. 3 of 7 March 2007 rev 0.2 AC Electrical Characteristics Symbol XIN / CLKIN FOUT tLH* tHL * tJC tD Input frequency At Pins 7,8,9,10,11,13,14,15 Output frequency At Pin 12 At Pin 16 Output rise time (measured from 0.8 to 2.0V) Output fall time (measured at 2.0V to 0.8V) Jitter (Cycle to cycle) Output duty cycle 40 ASM3P2855B Parameter Min Typ 24 50 24 19.52 0.9 0.7 250 50 Max Unit MHz MHz nS nS pS 60 % * tLH and tHL are measured into a capacitive load of 15pF Typical Crystal Oscillator Circuit Crystal R1 = 510 C1 C2 Typical Crystal Specifications Fundamental AT cut parallel resonant crystal Nominal frequency Frequency tolerance Operating temperature range Storage temperature Load capacitance Shunt capacitance ESR 24MHz 50 ppm or better at 25C -25C to +85C -40C to +85C 18pF 7pF maximum 25 Custom Clock Generator for Fax System Notice: The information in this document is subject to change without notice. 4 of 7 March 2007 rev 0.2 Package Information 16-lead Thin Shrunk Small Outline Package (4.40-MM Body) ASM3P2855B 8 1 PIN 1 ID E H 9 16 A Seating Plane L C e D A2 B A1 Symbol A A1 A2 B C D E e H L Inches Min 0.002 0.031 0.007 0.004 0.193 0.169 0.026 BSC 0.252 BSC 0.020 0 0.030 8 0.50 0 D Dimensions Millimeters Max 0.043 0.006 0.041 0.012 0.008 0.201 0.177 0.05 0.80 0.19 0.09 4.90 4.30 0.65 BSC 6.40 BSC 0.75 8 Min Max 1.20 0.15 1.05 0.30 0.20 5.10 4.50 Custom Clock Generator for Fax System Notice: The information in this document is subject to change without notice. 5 of 7 March 2007 rev 0.2 Ordering Codes Ordering Code ASM3P2855BG-16-TT ASM3P2855BG-16-TR ASM3P2855B Marking 3P2855BG 3P2855BG Package Type 16-pin 4.4-mm TSSOP - TUBE, Green 16-pin 4.4-mm TSSOP - TAPE & REEL, Green Operating Range Commercial Commercial Device Ordering Information ASM3P2855BG-16TR R = Tape & Reel, T = Tube or Tray O = SOT S = SOIC T = TSSOP A = SSOP V = TVSOP B = BGA Q = QFN DEVICE PIN COUNT F = LEAD FREE AND RoHS COMPLIANT PART G = GREEN PACKAGE, LEAD FREE, and RoHS DEVICE NUMBER X= Automotive I= Industrial P or n/c = Commercial (-40C to +125C) (-40C to +85C) (0C to +70C) 1 = Reserved 2 = Non PLL based 3 = EMI Reduction 4 = DDR support products 5 = STD Zero Delay Buffer 6 = Power Management 7 = Power Management 8 = Power Management 9 = Hi Performance 0 = Reserved U = MSOP E = TQFP L = LQFP U = MSOP P = PDIP D = QSOP X = SC-70 PulseCore Semiconductor Mixed signal Produc Licensed under U.S Patent Nos 5,488,627 and 5,631,921 Custom Clock Generator for Fax System Notice: The information in this document is subject to change without notice. 6 of 7 March 2007 rev 0.2 ASM3P2855B PulseCore Semiconductor Corporation 1715 S. Bascom Ave Suite 200 Campbell, CA 95008 Tel: 408-879-9077 Fax: 408-879-9018 www.pulsecoresemi.com Copyright (c) PulseCore Semiconductor All Rights Reserved Preliminary Information Part Number: ASM3P2855B Document Version: V0.2 Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to PulseCore Semiconductor, dated 11-11-2003 (c) Copyright 2007 PulseCore Semiconductor Corporation. All rights reserved. Our logo and name are trademarks or registered trademarks of PulseCore Semiconductor. All other brand and product names may be the trademarks of their respective companies. PulseCore reserves the right to make changes to this document and its products at any time without notice. PulseCore assumes no responsibility for any errors that may appear in this document. The data contained herein represents PulseCore's best data and/or estimates at the time of issuance. PulseCore reserves the right to change or correct this data at any time, without notice. If the product described herein is under development, significant changes to these specifications are possible. The information in this product data sheet is intended to be general descriptive information for potential customers and users, and is not intended to operate as, or provide, any guarantee or warrantee to any user or customer. PulseCore does not assume any responsibility or liability arising out of the application or use of any product described herein, and disclaims any express or implied warranties related to the sale and/or use of PulseCore products including liability or warranties related to fitness for a particular purpose, merchantability, or infringement of any intellectual property rights, except as express agreed to in PulseCore's Terms and Conditions of Sale (which are available from PulseCore). All sales of PulseCore products are made exclusively according to PulseCore's Terms and Conditions of Sale. The purchase of products from PulseCore does not convey a license under any patent rights, copyrights; mask works rights, trademarks, or any other intellectual property rights of PulseCore or third parties. PulseCore does not authorize its products for use as critical components in life-supporting systems where a malfunction or failure may reasonably be expected to result in significant injury to the user, and the inclusion of PulseCore products in such life-supporting systems implies that the manufacturer assumes all risk of such use and agrees to indemnify 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. 7 of 7 |
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