SY87739L数据手册集成电路（IC）的应用特定时钟/定时规格书PDF

描述 Description

The SY87739L is a complete rate independent frequency synthesizer integrated circuit. From a single reference source, this device generates a differential PECL output frequency from 10MHz up to 729MHz.The SY87739L generates an exactly correct reference frequency for common data transport protocols. This is especially important in transponder applications, where a standards compliant protocol data unit must be generated downstream, even in the absence of any signal from the associated upstream interface. In addition, the SY87739L will generate exactly correct reference frequencies for common data transport protocols augmented by forward error correction codes. The SY87739L accepts configuration via a MicroWire™ interface.For proprietary applications, the SY87739L generates reference frequencies guaranteed to enable the SY87721L CDR to lock to any possible baud rate from 28Mbps to 2.7Gbps.

特性 Features

·Protocol transparent fractional-N synthesizer from 10MHz to 729MHz from a single 27MHz reference oscillator
·Generates exactly the correct frequency for common transport protocols with or without FEC
·Directly enables SY87721L CDR to lock onto any data rate within its range
·Exceeds BellCore and ITU jitter generation specifications
·Programmable via MicroWire™ interface
·Available in 32-Pin EPAD-TQFP package
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简介

SY87739L属于集成电路（IC）的应用特定时钟/定时。由制造生产的SY87739L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。