ASM3P2855B March 2007 rev 0.2 Custom Clock Generator for Fax System Features • • • Generates Custom Clocks for FAX system from • 1x 19.52MHz non-spread clock for Scanner an inexpensive 24MHz Crystal • REFOUT Clock 7 x 50MHz synchronized non-Spread Spectrum • Supply Voltage 3.3 V +/- 0.3V clocks (for CPU, ASIC2, ASIC3, HDD, and PCI • Available in 16L TSSOP, Green package Analyzer, Ethernet, and LAN PHY) • Commercial Temperature operation 1x 50MHz for CPU Timer Product Description ASM3P2855B is a part of the two chip custom clock synchronized 50MHz clocks for Ethernet and LAN PHY, a generator solution for NEC FAX system. Together with 50MHz clock for the CPU Timer, and a 19.52MHz non- ASM3P2854A, ASM3P2855B realizes all the eighteen spread clock used by ASIC1 for Scanner. The custom clocks and clock generator ASM3P2855B works with a Supply subsystems of the FAX system. It uses an inexpensive Voltage of 3.3V. The device is available in a 16L TSSOP 24MHz crystal as the input to generate five synchronized Green package and in commercial temperature range. required by the various components 50MHz non-spread PCI clocks used by CPU, HDD, PCI Analyzer, ASIC2 and ASIC3, two non-spread Block Diagram VDD_FOUT VDD 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. ASM3P2855B March 2007 rev 0.2 Pin Diagram XIN / CLKIN 1 16 19.52MHz XOUT 2 15 50MHz VDD 3 14 50MHz 13 50MHz 12 REFOUT VDD_FOUT 4 ASM3P2855B GND_FOUT 5 GND 6 11 50MHz 50MHz 7 10 50MHz 50MHz 8 9 50MHz Pin Description Pin# Pin Name Type Description 1 XIN / CLKIN I 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. 2 XOUT O Crystal connection. If using an external reference, this pin must be left unconnected. 3 VDD P Power supply for the core 4 VDD_FOUT P Power supply for the output buffers. 5 GND_FOUT P Ground connection for the output buffers 6 GND P Ground connection 7 50MHz O Synchronous 50MHz Clock Output 8 50MHz O Synchronous 50MHz Clock Output 9 50MHz O Synchronous 50MHz Clock Output 10 50MHz O Synchronous 50MHz Clock Output 11 50MHz O Synchronous 50MHz Clock Output 12 REFOUT O 24MHz Reference Clock Out put 13 50MHz O Synchronous 50MHz Clock Output 14 50MHz O Synchronous 50MHz Clock Output 15 50MHz O 50MHz Clock Output 16 19.52MHz O 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 ASM3P2855B March 2007 rev 0.2 Absolute Maximum Ratings Symbol Parameter VDD, VDD_FOUT VIN Rating Power Supply Voltage relative to GND -0.5 to +4.6 Input Voltage relative to GND (Input Pins) TSTG Unit V -0.5 to VDD+0.5 -65 to +125 °C Ts Storage temperature Max. Soldering Temperature (10 sec) 260 °C TJ Junction Temperature 150 °C 2 KV Static Discharge Voltage TDV (As per JEDEC STD22- A114-B) 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 Parameter Min Operating Temperature VDD VDD_FOUT Typ 0 Max Units +70 °C Core Voltage +3.0 +3.3 +3.6 V Output Voltage +3.0 +3.3 +3.6 V DC Electrical Characteristics Symbol Parameter Min Typ Max Unit V VIL Input low voltage GND - 0.3 0.8 VIH Input high voltage 2.0 VDD + 0.3 V IIL Input low current -35 µA IIH Input high current 35 µA IXOL XOUT output low current ([email protected], VDD=3.3V) 3 mA IXOH XOUT output high current ([email protected], VDD=3.3V) 3 mA VOL Output low voltage (VDD = 3.3V, IOL = 10mA) VOH Output high voltage (VDD = 3.3V, IOH = 10mA) IDD Static supply current* 10 mA ICC Dynamic supply current ( VDD =3.3V) 28 mA VDD VDD_FOUT tON ZOUT 0.4 2.5 V V Operating Voltage 3.0 3.3 3.6 Operating Voltage 3.0 3.3 3.6 V 5 mS Power-up time (first locked cycle after power-up) Output impedance 29 V Ω * XIN is pulled low Custom Clock Generator for Fax System Notice: The information in this document is subject to change without notice. 3 of 7 ASM3P2855B March 2007 rev 0.2 AC Electrical Characteristics Symbol XIN / CLKIN FOUT Parameter Min Input frequency Output frequency Typ Max 24 At Pins 7,8,9,10,11,13,14,15 50 At Pin 12 24 At Pin 16 19.52 Unit MHz MHz tLH* Output rise time (measured from 0.8 to 2.0V) 0.9 nS tHL * Output fall time (measured at 2.0V to 0.8V) 0.7 nS tJC Jitter (Cycle to cycle) 250 pS tD Output duty cycle 40 50 60 % * tLH and tHL are measured into a capacitive load of 15pF Typical Crystal Oscillator Circuit R1 = 510Ω Crystal C1 C2 Typical Crystal Specifications Fundamental AT cut parallel resonant crystal Nominal frequency 24MHz Frequency tolerance ± 50 ppm or better at 25°C Operating temperature range -25°C to +85°C Storage temperature -40°C to +85°C Load capacitance 18pF Shunt capacitance 7pF maximum ESR 25 Ω Custom Clock Generator for Fax System Notice: The information in this document is subject to change without notice. 4 of 7 ASM3P2855B March 2007 rev 0.2 Package Information 16-lead Thin Shrunk Small Outline Package (4.40-MM Body) 1 8 PIN 1 ID E 16 A A2 e B A1 Seating Plane C θ D 9 H L D Dimensions Symbol Inches Min Millimeters Max A Min Max 0.043 1.20 A1 0.002 0.006 0.05 0.15 A2 0.031 0.041 0.80 1.05 B 0.007 0.012 0.19 0.30 C 0.004 0.008 0.09 0.20 D 0.193 0.201 4.90 5.10 E 0.169 0.177 4.30 4.50 e 0.026 BSC 0.65 BSC H 0.252 BSC 6.40 BSC L 0.020 0.030 0.50 0.75 θ 0° 8° 0° 8° Custom Clock Generator for Fax System Notice: The information in this document is subject to change without notice. 5 of 7 ASM3P2855B March 2007 rev 0.2 Ordering Codes Ordering Code Marking Package Type Operating Range ASM3P2855BG-16-TT 3P2855BG 16-pin 4.4-mm TSSOP - TUBE, Green Commercial ASM3P2855BG-16-TR 3P2855BG 16-pin 4.4-mm TSSOP - TAPE & REEL, Green Commercial Device Ordering Information A S M 3 P 2 8 5 5 B G - 1 6 T R R = Tape & Reel, T = Tube or Tray O = SOT S = SOIC T = TSSOP A = SSOP V = TVSOP B = BGA Q = QFN U = MSOP E = TQFP L = LQFP U = MSOP P = PDIP D = QSOP X = SC-70 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 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 ASM3P2855B March 2007 rev 0.2 PulseCore Semiconductor Corporation 1715 S. Bascom Ave Suite 200 Campbell, CA 95008 Tel: 408-879-9077 Fax: 408-879-9018 www.pulsecoresemi.com Copyright © 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 © 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