CDCFR83A

CDCFR83A www.ti.com DIRECT RAMBUS™ CLOCK GENERATOR SCAS812 – AUGUST 2005 FEATURES 533-MHz Differential Clock Source for Direct Rambus™ Memory Systems for an 1066-MHz Data Transfer Rate Fail-Safe Power Up Initialization Synchronizes the Clock Domains of the Rambus Channel With an External System or Processor Clock Three Power Operating Modes to Minimize Power for Mobile and Other Power-Sensitive Applications Operates From a Single 3.3-V Supply and 120 mW at 300 MHz (Typ) Packaged in a Shrink Small-Outline Package (DBQ) Supports Frequency Multipliers: 4, 6, 8, 16/3 No External Components Required for PLL Supports Independent Channel Clocking Spread Spectrum Clocking Tracking Capability to Reduce EMI Designed for Use With TI's 133-MHz Clock Synthesizers CDC924 and CDC921 Cycle-Cycle Jitter Is Less Than 40 ps at 533 MHz Certified by Gigatest Labs to Exceed the Rambus DRCG Validation Requirement Supports Industrial Temperature Range of –40°C to 85°C DBQ PACKAGE (TOP VIEW) VDDIR 1 REFCLK 2 VDDP 3 GNDP 4 GNDI 5 PCLKM 6 SYNCLKN 7 GNDC 8 VDDC 9 VDDIPD 10 STOPB 11 PWRDNB 12 24 S0 23 S1 22 VDDO 21 GNDO 20 CLK 19 NC 18 CLKB 17 GNDO 16 VDDO 15 MULT0 14 MULT1 13 S2 NC − No internal connection DESCRIPTION The Direct Rambus clock generator (DRCG) provides the necessary clock signals to support a Direct Rambus memory subsystem. It includes signals to synchronize the Direct Rambus channel clock to an external system or processor clock. It is designed to sup...