描述 Description

The ZL30131 OC-192/STM-64 PDH/SONET/SDH/10GbE Network Interface Synchronizer is a highly integrated device that provides timing for both PDH/SONET/SDH and Ethernet network interface cards.This device is ideally suited for designs that require both a transmit timing path (backplane to PHY) and a receive timing path (PHY to backplane). Each path is controlled with separate DPLLs (Tx DPLL, Rx DPLL) which are both independently configurable through the serial interface (SPI or I2C). A typical application of the ZL30131 is shown in Figure 2. In this application, the ZL30131 translates the 19.44 MHz clock from the telecom rate backplane (system timing bus), translates the frequency to 622.08 MHz or 156.25 MHz for the PHY Tx clock, and filters the jitter to ensure compliance with the related standards. A programmable synthesizer (P0) provides synchronous PDH clocks with multiples of 8 kHz for generating PDH interface clocks. On the receive path, the Rx DPLL and the P1 synthesizer translate the line recovered clock (8 kHz or 25 MHz) from the PHY to the 19.44 MHz telecom backplane (line recovered timing) for the central timing cards. The ZL30131 allows easy integration of Ethernet line rates with today’s telecom backplanes.Click here for secure documentation

特性 Features

Typical Applications
? ITU-T G.8262 Line Cards which support 1GbE and 10GbE interfaces
? SONET line cards up to OC-192
? SDH line cards up to STM-64
Features & Benefits
? Supports the requirements of ITU-T G.8262 for synchronous Ethernet Equipment slave Clocks (EEC option 1 and 2)
? Synchronizes to telecom reference clocks (2 kHz, N*8 kHz up to 77.76 MHz, 155.52 MHz) or to Ethernet reference clocks (25 MHz, 50 MHz,62.5 MHz, 125 MHz)
? Generates standard SONET/SDH clock rates (e.g., 19.44 MHz, 38.88 MHz, 77.76 MHz, 155.52 MHz, 622.08 MHz) or Ethernet clock rates (e.g. 25 MHz, 50 MHz, 125 MHz, 156.25 MHz, 312.5 MHz) for synchronizing Ethernet PHYs
? Programmable output synthesizers (P0, P1) generate telecom clock frequencies from any multiple of 8 kHz up to 100 MHz (e.g., T1/E1, DS3/E3)
? Configurable through a serial interface (SPI or I2C)

簡(jiǎn)介

ZL30131屬于集成電路（IC）的應(yīng)用特定時(shí)鐘/定時(shí)。由制造生產(chǎn)的ZL30131應(yīng)用特定時(shí)鐘/定時(shí)專用時(shí)鐘和計(jì)時(shí) IC（集成電路）產(chǎn)品族中的產(chǎn)品主要用于執(zhí)行與時(shí)間或頻率信息生成和分配相關(guān)的各種操作，適合的設(shè)計(jì)環(huán)境較特定，例如 AMD 和 Intel 的中央處理單元 (CPU) 或圖形處理單元 (GPU)、DVD 音頻設(shè)備、藍(lán)光光盤(pán)播放器、以太網(wǎng)設(shè)備、PCIe、SATA、光纖通道接口、車載娛樂(lè)總線等。