MAX24305中文资料SyncE and IEEE 1588数据手册Microchip规格书

描述 Description

The MAX24305 is an flexible, high-performance timing and clock synthesizer ICs that include a DPLL and two independent APLLs. When locked to one of two input clock signals, the device performs any-to-any frequency conversion. From any input clock frequency 1Hz to 750MHz the device can produce frequency-locked APLL output frequencies up to 750MHz and as many as 5 output clock signals that are integer divisors of the APLL frequencies. Input jitter can be attenuated by an internal low-bandwidth DPLL. The DPLL also provides truly hitless switching between input clocks and a high-resolution holdover capability. Input switching can be manual or automatic. Using only a low-cost crystal or oscillator, the device can also serve as frequency synthesizer IC. Output jitter is typically 0.18 to 0.3ps RMS for an APLL-only integer multiply and 0.25 to 0.4ps RMS for APLL-only fractional multiply or DPLL+APLL operation.

For telecom systems, the device has all required features and functions to serve as a central timing function or as a line card timing IC. With a suitable oscillator the device meets the requirements of Stratum 2, 3E, 3, 4E, and 4; G.812 Types I to IV; G.813; and G.8262.

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特性 Features

Input Clocks
• Three Differential or CMOS/TTL Inputs
• Continuous Input Clock Quality Monitoring
• Hitless Reference Switching on Loss of Input
• Programmable Bandwidth, 0.5mHz to 400Hz
• Free-Run or Holdover on Loss of All Inputs
• Manual Phase Adjustment
• APLLs Perform High Resolution Fractional-N Clock Multiplication
• Suitable Line Card IC or Timing Card IC for Stratum 2/3E/3/4E/4, SMC, SEC/EEC, or SSU
• Uses External Crystal, Oscillator or Clock Signal As Master Clock
• SPI Processor Interface
• -40 to +85°C Operating Temp. Range
• Frequency Conversion and Synthesis Applications in a Wide Variety of Equipment Types
• Telecom Timing Cards or Line Cards for SONET/SDH, Synchronous Ethernet and/or OTN

简介

MAX24305属于集成电路（IC）的应用特定时钟/定时。由制造生产的MAX24305应用特定时钟/定时专用时钟和计时 IC（集成电路）产品族中的产品主要用于执行与时间或频率信息生成和分配相关的各种操作，适合的设计环境较特定，例如 AMD 和 Intel 的中央处理单元 (CPU) 或图形处理单元 (GPU)、DVD 音频设备、蓝光光盘播放器、以太网设备、PCIe、SATA、光纤通道接口、车载娱乐总线等。