CY24272 Rambus XDR Clock Generator with Zero SDA Hold Time Rambus XDR Clock Generator with Zero SDA Hold Time Features Device Comparison Meets Rambus Extended Data Rate (XDR) clocking requirements CY24271 CY24272 25 ps typical cycle-to-cycle jitter SDA hold time = 300 ns SDA hold time = 0 ns 2 (SMBus compliant) (I C compliant) 135 dBc/Hz typical phase noise at 20 MHz offset R = 200 typical R = 295 minimum 100 or 133 MHz differential clock input RC RC (Rambus standard drive) (Reduced output drive) 300667 MHz high speed clock support Quad (open drain) differential output drivers Functional Description Supports frequency multipliers: 3, 4, 5, 6, 9/2 and 15/4 For a complete list of related documentation, click here. Spread Aware 2.5 V operation 28-pin TSSOP package Logic Block Diagram /BYPASS EN EN RegA CLK0 CLK0B EN RegB CLK1 Bypass MUX CLK1B EN RegC REFCLK,REFCLKB PLL CLK2 CLK2B EN RegD CLK3 CLK3B SCL SDA ID0 ID1 Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 001-42414 Rev. *D Revised June 7, 2016CY24272 Contents Pin Configuration .............................................................3 Test and Measurement Setup ........................................ 14 Pin Definitions ..................................................................3 Signal Waveforms .......................................................... 15 Functional Overview ........................................................4 Jitter .................................................................................16 PLL Multiplier ...............................................................4 Ordering Information ...................................................... 17 Input Clock Signal .......................................................4 Ordering Code Definitions ......................................... 17 Modes of Operation .....................................................5 Package Drawing and Dimension ................................. 18 Device ID and SMBus Device Address .......................6 Acronyms ........................................................................19 SMBus Protocol ...........................................................6 Document Conventions ................................................. 19 SMBus Data Byte Definitions ......................................6 Units of Measure ....................................................... 19 Absolute Maximum Conditions .......................................8 Document History Page ................................................. 20 DC Operating Conditions .................................................9 Sales, Solutions, and Legal Information ...................... 21 DC Electrical Specifications ..........................................10 Worldwide Sales and Design Support ....................... 21 Thermal Resistance ........................................................10 Products ....................................................................21 AC Operating Conditions ...............................................11 PSoCSolutions .......................................................21 AC Electrical Specifications ..........................................12 Cypress Developer Community ................................. 21 SMBus Timing Specification .........................................13 Technical Support ..................................................... 21 Document Number: 001-42414 Rev. *D Page 2 of 21