5 CY26187-2 PRELIMINARY Broadcom Reference Design Clock Generator Features Benefits • Integrated phase-locked loop Highest Performance PLL tailored for multimedia applications • Low skew, low jitter, high accuracy outputs Meets critical timing requirements in complex system designs • 3.3V Operation Part Number Outputs Broadcom Reference Design Input Frequency Output Frequencies CY26187-2 1 BCM5680_5404 50 MHz 1 copy of 142.8 MHz (3.3V) Logic Block Diagram OUTPUT MULTIPLEXER AND DIVIDERS P Comp 50 XIN OSC Q XOUT 142.8 MHz VCO P PLL OE VDD VDD VSS VSS Pin Configuration CY26187 8-pin SOIC XIN AVDD OE AVSS Cypress Semiconductor Corporation Document #: 38-07131 Rev. *A • 1 8 XOUT 2 7 VSS 3 6 142.8 MHz 4 5 VDD 3901 North First Street • San Jose • CA 95134 • 408-943-2600 Revised December 14, 2002 PRELIMINARY CY26187-2 Summary Name Pin Number Description [1] XIN 1 Reference Crystal Input AVDD 2 Analog Voltage Supply OE 3 Output enable (0-off; 1-on) AVSS 4 Ground VDD 5 Voltage Supply 142.8 MHz 6 142.8-MHz clock output VSS 7 Ground XOUT[1] 8 Reference Crystal Output Absolute Maximum Conditions Parameter VDD Description Min. Max. Unit 7.0 V 125 °C 125 °C Supply Voltage Temperature[2] TS Storage TJ Junction Temperature –65 Digital Inputs VSS – 0.3 VDD + 0.3 V Digital Outputs referred to VDD VSS – 0.3 VDD + 0.3 V Electro-Static Discharge 2 kV Recommended Operating Conditions Parameter Description Min. Typ. Max. Unit 3.135 3.3 3.465 V 70 C VDD Operating Voltage TA Ambient Temperature CLOAD Max. Load Capacitance 15 pF Pmax Max. Output Power Dissipation, 8-pin package 150 mW fREF Reference Frequency tPU Power-up time for all VDD's to reach minimum specified voltage (power ramps must be monotonic) 0 50 MHz 0.05 500 ms DC Electrical Characteristics Parameter Min. Typ. Output High Current Name VOH = VDD – 0.5, VDD = 3.3V Description 12 24 Output Low Current VOL = 0.5, VDD = 3.3V 12 24 Input Capacitance Input Leakage Current IVDD Max. mA mA 7 pF 35 mA µA 5 3.3V, All outputs @ 10 MHz Unit Notes: 1. Float XOUT pin if XIN is driven by reference clock (as opposed to crystal). 2. Rated for 10 years. Document #: 38-07131 Rev. *A Page 2 of 5 PRELIMINARY CY26187-2 AC Electrical Characteristics (VDD = 3.3V) (3.) Parameter Name Description Output Duty Cycle Min. Duty Cycle is defined in Figure 1, 50% of VDD Typ. Max. 55 45 50 t3 Rising Edge Slew Rate Output Clock Rise Time, 20%-80% of VDD 0.8 1.4 t4 Falling Edge Slew Rate Output Clock Fall Time, 80% to 20% of VDD 0.8 1.4 t9 Clock Jitter t10 PLL Lock Time Peak to Peak period jitter Unit % V/ns V/ns 200 ps 3 ms Note: 3. Not 100% tested. Test Circuit VDD CLK out 0.1 µF CLOAD OUTPUTS VDD 0.1 µF GND t1 t2 CLK 50% Figure 1. Duty Cycle Definition; DC = t2/t1. t3 t4 80% CLK 20% Figure 2. Rise and Fall Time Definitions. Ordering Information Ordering Code Package Name Package Type Operating Range Operating Voltage CY26187SC-2 S8 8-Pin SOIC Commercial 3.3V Document #: 38-07131 Rev. *A Page 3 of 5 PRELIMINARY CY26187-2 Package Diagram 8-Lead (150-Mil) SOIC S8 51-85066-A Document #: 38-07131 Rev. *A Page 4 of 5 © Cypress Semiconductor Corporation, 2001. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. PRELIMINARY CY26187-2 Revision History Document Title: CY26187-2 Broadcom Reference Design Clock Generator Document Number: 38-07131 REV. ECN NO. Issue Date Orig. of Change ** 110096 02/19/02 CKN *A 121872 12/14/02 RBI Document #: 38-07131 Rev. *A Description of Change New data sheet Power up requirements added to Operating Conditions Information Page 5 of 5