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idt82v3012 t1/e1/oc3 wan pll 和双 涉及 输入 工业的 温度 范围
表格 的 内容
1 管脚 描述...................................................................................................................................................................................................7
2 函数的 描述 ......................................................................................................................................................................................9
2.1 状态 控制 电路 ..................................................................................................................................................................................9
2.1.1 正常的 模式..............................................................................................................................................................................10
2.1.2 快 锁 模式..........................................................................................................................................................................10
2.1.3 holdover 模式 ...........................................................................................................................................................................10
2.1.4 freerun 模式.............................................................................................................................................................................10
2.2 频率 选择 电路 .........................................................................................................................................................................10
2.3 涉及 输入 转变 ...........................................................................................................................................................................10
2.4 涉及 输入 监控..........................................................................................................................................................................11
2.5 invalid 输入 信号 发现 ..................................................................................................................................................................11
2.6 系 控制 块.....................................................................................................................................................................................11
2.7 dpll 块..............................................................................................................................................................................................12
2.7.1 阶段 探测器 (phd)................................................................................................................................................................12
2.7.2 limiter.........................................................................................................................................................................................12
2.7.3 循环 过滤 ..................................................................................................................................................................................13
2.7.4 fraction 块.............................................................................................................................................................................13
2.7.5 数字的 控制 振荡器 (dco)..................................................................................................................................................13
2.7.6 锁 指示信号 .............................................................................................................................................................................13
2.7.7 输出 接口..........................................................................................................................................................................13
2.8 OSC.........................................................................................................................................................................................................14
2.8.1 时钟 振荡器 ..........................................................................................................................................................................14
2.9 JTAG .......................................................................................................................................................................................................14
2.10 重置 电路 ............................................................................................................................................................................................14
3 measures 的 效能 ...............................................................................................................................................................................15
3.1 intrinsic jitter ...........................................................................................................................................................................................15
3.2 jitter 容忍........................................................................................................................................................................................15
3.3 jitter 转移 ..........................................................................................................................................................................................15
3.4 频率 精度................................................................................................................................................................................15
3.5 holdover 精度 ..................................................................................................................................................................................15
3.6 俘获 范围 ........................................................................................................................................................................................15
3.7 锁 范围 .............................................................................................................................................................................................15
3.8 阶段 斜度 ............................................................................................................................................................................................15
3.9 时间 间隔 错误 (系)..........................................................................................................................................................................15
3.10 最大 时间 间隔 错误 (mtie) ......................................................................................................................................................15
3.11 阶段 continuity .....................................................................................................................................................................................16
3.12 阶段 锁 时间.....................................................................................................................................................................................16
4 绝对 最大 比率............................................................................................................................................................................17
5 推荐 直流 operating 情况 .....................................................................................................................................................17
6 直流 电的 特性..........................................................................................................................................................................17
6.1 单独的 终止 输入/输出 端口...................................................................................................................................................................17
6.2 差别的 输出 端口 (lvds) ...............................................................................................................................................................18
7 交流 电的 特性.........................................................................................................................................................................19
7.1 效能............................................................................................................................................................................................19
7.2 intrinsic jitter unfiltered ...........................................................................................................................................................................20
7.3 c1.5o (1.544 mhz) intrinsic jitter filtered ...............................................................................................................................................20
7.4 c2o (2.048 mhz) intrinsic jitter filtered ..................................................................................................................................................20
7.5 c19o (19.44 mhz) intrinsic jitter filtered ................................................................................................................................................20
7.6 8 khz 输入 至 8 khz 输出 jitter 转移 .............................................................................................................................................21
7.7 1.544 mhz 输入 至 1.544 mhz 输出 jitter 转移.............................................................................................................................21
7.8 2.048 mhz 输入 至 2.048 mhz 输出 jitter 转移.............................................................................................................................21
7.9 19.44 mhz 输入 至 19.44 mhz 输出 jitter 转移.............................................................................................................................22
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