This document describes the features and characteristics of CDCR81 DIRECT RAMBUS CLOCK GENERATOR SCAS606B, including support for Direct Rambus memory subsystem, synchronization with external system or processor clock, three power operating modes, single 3.3V supply, wide frequency range for phase-locked loop input, etc.
The CDCR81 Direct Rambus Clock Generator (DRCG) is designed to support Direct Rambus memory on various computer platforms by providing the necessary clock signals. It synchronizes the Direct Rambus channel clock with an external system or processor clock, ensuring synchronous communication between the Rambus channel and ASIC clock domains.
The device operates from a single 3.3-V supply and offers three power operating modes to minimize power consumption in mobile and other power-sensitive applications. Key features include clock multiplication and phase alignment capabilities, spread spectrum clocking tracking to reduce EMI, and support for independent channel clocking without requiring external components for the PLL.
| Supply Voltage | 3.135 V to 3.465 V |
|---|---|
| Typical Power Consumption at 300 MHz | 120-mW |
| Package Type | Shrink Small-Outline Package (DBQ) |
| Wide Phase-Lock Input Frequency Range | 33 MHz to 100 MHz |
| High-level Output Current | -16mA |
The device operates from a single 3.3-V supply and consumes 120-mW at 300 MHz (Typ).
No, it requires no external components for the PLL.
The CDCR81 is characterized for operation over free-air temperatures of 0 °C to 85°C.
Yes, it supports independent channel clocking and spread spectrum clocking tracking capability.