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1. 发明申请

US20070014388A1 Method for generating transmitter clock and transmit clock generator 失效
标题翻译：用于产生发射机时钟和传输时钟发生器的方法
公开(公告)号：US20070014388A1
公开(公告)日：2007-01-18
申请号：US11181715
申请日：2005-07-14
申请人： Timothy Buchholtz
发明人： Timothy Buchholtz
IPC分类号： H04L7/00
CPC分类号： G06F1/12 , H04L7/0008 , H04L7/0091
摘要： A transmit clock generator includes a first local clock generator and a second local clock generator, each receiving an external PLL clock signal and respectively generating first and second divided clock signals. A synchronization signal is applied to the first local clock generator and second local clock generator during a clock training period to enforce a phase relationship between the first and second divided clock signals. The synchronization signal includes at least one synchronization pulse that is applied to the first local clock generator and second local clock generator during the clock training period.
摘要翻译：发送时钟发生器包括第一本地时钟发生器和第二本地时钟发生器，每个本地时钟发生器接收外部PLL时钟信号并分别产生第一和第二分频时钟信号。在时钟训练周期期间，同步信号被施加到第一本地时钟发生器和第二本地时钟发生器，以强制第一和第二分频时钟信号之间的相位关系。同步信号包括在时钟训练周期期间施加到第一本地时钟发生器和第二本地时钟发生器的至少一个同步脉冲。

2. 发明申请

US20060285584A1 Jitter generator to simulate a closed data eye 审中-公开
标题翻译：抖动发生器来模拟一个封闭的数据眼睛
公开(公告)号：US20060285584A1
公开(公告)日：2006-12-21
申请号：US11155028
申请日：2005-06-16
申请人： Steven Baumgartner , Anthony Bonaccio , Timothy Buchholtz , Charles Geer , Daniel Young
发明人： Steven Baumgartner , Anthony Bonaccio , Timothy Buchholtz , Charles Geer , Daniel Young
IPC分类号： H04L7/00
CPC分类号： H04L7/033 , G01R31/31709
摘要： Techniques and apparatus for testing jitter tolerance of a device are provided. Jitter control logic within a device may include a master phase rotator to rapidly adjust the phase of a clock signal to simulate jitter in a data stream received by the device. For some embodiments, the rate, magnitude, and signature (or waveform shape) of the phase adjustments may be controlled to simulate high frequency jitter. Errors in received data packets may be monitored while simulating this jitter (e.g., as part of a built in self test) to test the jitter tolerance of a device under test.
摘要翻译：提供了用于测试设备的抖动容限的技术和设备。设备内的抖动控制逻辑可以包括主相位旋转器，用于快速调整时钟信号的相位以模拟由设备接收的数据流中的抖动。对于一些实施例，可以控制相位调整的速率，幅度和签名（或波形形状）以模拟高频抖动。可以在模拟该抖动（例如，作为内置自检的一部分）的同时监视接收到的数据分组中的错误，以测试被测器件的抖动容限。

3. 发明申请

US20060285583A1 Phase rotator control test scheme 失效
公开(公告)号：US20060285583A1
公开(公告)日：2006-12-21
申请号：US11155027
申请日：2005-06-16
申请人： Steven Baumgartner , Anthony Bonaccio , Timothy Buchholtz , Charles Geer , Daniel Young
发明人： Steven Baumgartner , Anthony Bonaccio , Timothy Buchholtz , Charles Geer , Daniel Young
IPC分类号： H04L27/06
CPC分类号： G01R31/317
摘要： Techniques and apparatus for testing phase rotators for detecting defective tap weights are provided. Phase rotator test logic may include a master phase rotator to cycle the phase of a clock signal distributed to operational phase rotators through an entire cycle of phases (e.g., an entire 360 degree rotation). Each operational phase rotator should respond with an equal but opposite phase shift in order to maintain phase lock. Thus, after sweeping, each tap weight is exercised, which may help ensure defective tap weights in any (e.g., quadrant) are detected during testing.

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