【产品】用于IEEE 1588 的端口同步器8A34013，抖动输出典型值低于150fs RMS

时间： 2019-09-11 来源：IDT（Renesas收购）

技术问答

IDT（RENESAS收购）推出的用于IEEE 1588 的8A34013 端口同步器可再生和分配超低抖动，锁定到IEEE 1588的精确定时信号和系统中其他地方的同步以太网（SyncE）参考源。该设备可用于精确同步线卡或子卡上的IEEE 1588时间戳单元（TSU）和SyncE端口，这些卡通过背板或引入时钟传播延迟的其他介质与同步源连接。数字PLL（DPLL）支持冗余定时源的参考之间的无中断参考切换。该器件可用于主动测量和补偿背板和电路板上的时钟传播延迟，以确保准确的时间和相位分布，同时系统中IEEE 1588 TSU之间的时间误差最小。

8A34013支持多个独立定时通道：IEEE 1588时钟合成，SyncE时钟生成，抖动衰减和通用频率转换。输入到输入，输入到输出和输出到输出的相位偏移都可以精确管理。该器件输出超低抖动时钟，可直接同步高达28Gbps的SERDES，以及CPRI / OBSAI，SONET / SDH和PDH接口以及IEEE 1588 TSU。

特征：
• 四个独立的定时通道
• 抖动输出低于150fs RMS（典型值）
• 数字PLL（DPLL）可锁定1kHz至1GHz的任何频率
• DPLL /数字控制振荡器（DCO）产生0.5Hz至1GHz的任何频率
• DCO输出可以与任何DPLL或DCO的输出在相位和频率上对齐
• IEEE 1588支持：
· 精确（1ps）分辨率，用于相位测量和控制
· 所有输出/输入均可配置为对PWM时钟信号进行解码/编码
· PWM可用于发送和接收嵌入式帧和同步脉冲; 以及时间（ToD）和其他数据
• 参考监视器根据LOS，活动，频率监视和/或LOS输入引脚限定/取消参考资格
• 自动参考选择状态机根据参考监视器，优先级表，回复/非回复和其他可编程设置为每个DPLL选择活动参考
• 器件需要晶体振荡器或基模晶体：25MHz至54MHz
• 设备可以在重置后通过以下方式自动配置：
· 内部客户可编程一次性可编程存储器
· 标准外部I2C EPROM通过独立的I2C主端口

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图3 产品型号选择

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A1904-01 PRODUCT/PROCESS CHANGE NOTICE (PCN)

型号- 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型号- 8P79808,9DBL02XX,5L2503,5X1503,9DBL08XX,8SLVD1204,5P1105,8P391206,1338,9FGV100X,8T49N240,1337,8V19N4XX,8P391208,8T49N241,8T49N285,8T49N242,8T49N286,8L30XXX,8T49N287,8T49N2XX,8P391204,8P791204,5P83903,8V49NS0412,1339,DS1338,DS1339,5P350XX,8P79818,DS1337,8P791206,8P791208,5PB1203,9FGV1003,8T39S,9FGV1004,9FGV1001,5PB12XX,9FGV1002,5P1103,8SLVP,8SLVPXXXX,8V19N470,8V79S6XX,5P49V69XX,8P34SXXXX,8P34S,5PB1110,8SLVD,8A34013,8A34012,8V97053,8A34011,9DBL05XX,5X2503,8V97051,8T39SXX,9DBL07XX,9DBL09XX,9ZXLXXXX,5P8390X,9FGL02XX,8V4XNSXX12,8T49N28X,PROXO,FXA2016,8T49N24X,8V49NSXXXX,8V41NS0412,8V49NS0312,9FGL08XX,82P339XX,5PB11XX,5P35023,9DBLXXXX,DS133X,82P33XXX,5PB1XXX,IDT1337AG,8V97XXX,5PB1108,5L1503,XA,8A340XX,5PB1106,5PB1104,5PB1102,XL,9FGLXXXX,8SLVDXXXX,5L350XX,9DML04XX,5P49V6967,XU,5P49V6965

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TP1906-05 PRODUCT/PROCESS CHANGE NOTICE (PCN)

型号- 8A34045E-001NLG,8A35024C-000NLG8,8A34045C-001NLG8,8A34002PC-000NLG,8A34043C-000NBG,8A34043E-000NBG,8A34045C-001NLG,8A34012E-000NLG8,8A34002E-000NLG#,8A35012E-000NLG8,8A34042C-000NLG8,8A34012C-000NLG,8A34012E-000NLG,8A34044C-000NLG,8A34003C-000NBG8,8A34045E-000NLG8,8A35024C-000NLG,8A35024E-000NLG,8A34044E-000NLG,8A35027E-000NLG8,8A34012E-000NLG#,8A3400X,8A35012E-000NLG#,8A34002C-000NLG,8A34011E-000AJG,8A34011C-000AJG,8A35024C-000NLG#,8A34013E-000NBG#,8A34002E-000NLG,8A34002E-000NLG8,8A34043E-000NBG8,8A34042C-000NLG#,8A34013C-000NBG8,8A34041E-999AJG,8A34004C-000NBG8,8A34013E-000NBG8,8A35027,8A35024,8A34003E-000NBG#,8A34011E-000AJG8,8A34001E-000AJG,8A34013C-000NBG#,8A34001PC-000AJG,8A34043C-000NBG#,8A34044C-000NLG8,8A34004C-000NBG,8A34041C-999AJG8,8A35027C-000NLG,8A34041E-000AJG8,8A34045,8A34044,8A35012,8A34044C-000NLG#,8A34043,8A34042,8A34041C-000AJG,8A34041,8A34004C-000NBG#,8A34045C-001NLG#,8A34045E-000NLG#,8A35027C-000NLG#,8A35027C-000NLG8,8A34045C-000NLG#,8A34045E-001NLG8,8A35024E-000NLG8,8A34001C-000AJG8,8A34013C-000NBG,8A34013E-000NBG,8A34042E-000NLG,8A34042C-000NLG,8A34002C-000NLG#,8A35012C-000NLG8,8A34042E-000NLG8,8A34012C-000NLG8,8A34003E-000NBG,8A34002C-000NLG8,8A35012C-000NLG,8A34003E-000NBG8,8A34003C-000NBG,8A34045C-000NLG,8A35012E-000NLG,8A34012C-000NLG#,8A34043C-000NBG8,8A34045E-000NLG,8A35012C-000NLG#,8A35024E-000NLG#,8A3400XP,8A34042E-000NLG#,8A34043E-000NBG#,8A34013,8A34012,8A34011,8A34004E-000NBG8,8A34044E-000NLG8,8A34001C-000AJG,8A34002PC-000NLG#,8A34003PC-000NBG8,8A34011C-000AJG8,8A34041C-999AJG,8A34044E-000NLG#,8A35027E-000NLG,8A34002PC-000NLG8,8A34004,8A34041E-999AJG8,8A34003,8A34002,8A34004E-000NBG#,8A34001,8A34045E-001NLG#,8A35027E-000NLG#,8A34041E-000AJG,8A34041C-000AJG8,8A34004E-000NBG,8A34045C-000NLG8,8A34001PC-000AJG8,8A34003C-000NBG#,8A34001E-000AJG8,8A34003PC-000NBG#,8A34003PC-000NBG

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