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1. 发明授权

US07183797B2 Next generation 8B10B architecture 有权
标题翻译：下一代8B10B架构
公开(公告)号：US07183797B2
公开(公告)日：2007-02-27
申请号：US10977952
申请日：2004-10-29
申请人： Ramanand Venkata , Rakesh H Patel , Chong H Lee
发明人： Ramanand Venkata , Rakesh H Patel , Chong H Lee
IPC分类号： H03K19/173
CPC分类号： G06F13/385
摘要： Eight-bit ten-bit (8B10B) coding is provided in a hard intellectual property (IP) block with the capability of supporting a greater range of data rates (e.g., data rates less than, equal to, and greater than 3.125 Gbps). Each channel of high speed serial interface circuitry includes receiver circuitry having two 8B10B decoders and transmitter circuitry having two 8B10B encoders. The receiver and transmitter circuitry can be configured to operate in one of three modes of operation: cascade mode, dual channel mode, and single channel mode.
摘要翻译：在具有支持更大范围的数据速率（例如，数据速率小于等于并且大于3.125Gbps）的能力的硬知识产权（IP）块中提供八位十位（8B10B）编码。高速串行接口电路的每个通道包括具有两个8B10B解码器和具有两个8B10B编码器的发射机电路的接收机电路。接收器和发射器电路可以配置为在三种工作模式之一下工作：级联模式，双通道模式和单通道模式。

2. 发明授权

US07436210B2 Next generation 8B10B architecture 有权
标题翻译：下一代8B10B架构
公开(公告)号：US07436210B2
公开(公告)日：2008-10-14
申请号：US11655797
申请日：2007-01-18
申请人： Ramanand Venkata , Rakesh H Patel , Chong H Lee
发明人： Ramanand Venkata , Rakesh H Patel , Chong H Lee
IPC分类号： H03K19/173
CPC分类号： G06F13/385
摘要： Eight-bit ten-bit (8B10B) coding is provided in a hard intellectual property (IP) block with the capability of supporting a greater range of data rates (e.g., data rates less than, equal to, and greater than 3.125 Gbps). Each channel of high speed serial interface circuitry includes receiver circuitry having two 8B10B decoders and transmitter circuitry having two 8B10B encoders. The receiver and transmitter circuitry can be configured to operate in one of three modes of operation: cascade mode, dual channel mode, and single channel mode.
摘要翻译：在具有支持更大范围的数据速率（例如，数据速率小于等于并且大于3.125Gbps）的能力的硬知识产权（IP）块中提供八位十位（8B10B）编码。高速串行接口电路的每个通道包括具有两个8B10B解码器和具有两个8B10B编码器的发射机电路的接收机电路。接收器和发射器电路可以配置为在三种工作模式之一下工作：级联模式，双通道模式和单通道模式。

3. 发明授权

US07538578B2 Multiple data rates in programmable logic device serial interface 失效
标题翻译：可编程逻辑器件串行接口中的多个数据速率
公开(公告)号：US07538578B2
公开(公告)日：2009-05-26
申请号：US11177034
申请日：2005-07-08
申请人： Ramanand Venkata , Chong H Lee , Rakesh H Patel
发明人： Ramanand Venkata , Chong H Lee , Rakesh H Patel
IPC分类号： H03K19/177 , G06F13/42
CPC分类号： H03K19/17744
摘要： A serial interface for a programmable logic device can be operated according to various communications protocols and includes both a receiver portion and a transmitter portion. The receiver portion includes at least a word or byte alignment stage, a de-skew stage, a rate compensation or matching stage, a padded protocol decoder stage (e.g., 8B/10B decoder circuitry or 64B/66B decoder circuitry), a byte deserializer stage, a byte reorder stage, and a phase compensation stage. The transmitter portion includes at least a phase compensation stage, a byte deserializer stage, and a padded protocol encoder stage (e.g., an 8B/10B encoder circuitry or 64B/66B encoder circuitry). Each stage may have multiple occurrences of relevant circuitry. Selection circuitry, such as multiplexers, selects the appropriate stages, and circuitry within each stage, for the protocol being used.
摘要翻译：用于可编程逻辑器件的串行接口可以根据各种通信协议进行操作，并且包括接收器部分和发射器部分。接收器部分至少包括字或字节对准级，去偏移级，速率补偿或匹配级，填充协议解码器级（例如，8B / 10B解码器电路或64B / 66B解码器电路），字节解串器阶段，字节重排阶段和相位补偿阶段。发射机部分至少包括相位补偿级，字节解串器级和填充协议编码器级（例如，8B / 10B编码器电路或64B / 66B编码器电路）。每个阶段可能有多次出现相关的电路。选择电路，例如多路复用器，为所使用的协议选择适当的阶段和每个阶段内的电路。

4. 发明授权

US07616657B2 Heterogeneous transceiver architecture for wide range programmability of programmable logic devices 有权
标题翻译：异构收发器架构，用于可编程逻辑器件的广泛可编程性
公开(公告)号：US07616657B2
公开(公告)日：2009-11-10
申请号：US11402417
申请日：2006-04-11
申请人： Sergey Shumarayev , Bill W Bereza , Chong H Lee , Rakesh H Patel , Wilson Wong
发明人： Sergey Shumarayev , Bill W Bereza , Chong H Lee , Rakesh H Patel , Wilson Wong
IPC分类号： H04J3/00
CPC分类号： H04L5/14 , H03K19/17744 , H04L27/00
摘要： High-speed serial data transceiver circuitry on a programmable logic device (“PLD”) includes some channels that are able to operate at data rates up to a first, relatively low maximum data rate, and other channels that are able to operate at data rates up to a second, relatively high maximum data rate. The relatively low-speed channels are served by relatively low-speed phase locked loop (“PLL”) circuitry, and have other circuit components that are typically needed for handling data that is transmitted at relatively low data rates. The relatively high-speed channels are served by relatively high-speed PLLs, and have other circuit components that are typically needed for handling data that is transmitted at relatively high data rates.
摘要翻译：可编程逻辑器件（“PLD”）上的高速串行数据收发器电路包括一些能够以高达第一，相对较低的最大数据速率的数据速率工作的通道，以及能够以数据速率操作的其他通道达到第二个相对较高的最大数据速率。相对低速的通道由相对低速的锁相环（“PLL”）电路服务，并且具有通常用于处理以相对低的数据速率发送的数据所需的其他电路组件。相对高速的信道由相对高速的PLL服务，并且具有通常用于处理以相对高的数据速率传输的数据所需的其他电路部件。

5. 发明授权

US07151397B2 Voltage controlled oscillator programmable delay cells 有权
公开(公告)号：US07151397B2
公开(公告)日：2006-12-19
申请号：US10873578
申请日：2004-06-22
申请人： Stjepan W Andrasic , Rakesh H Patel , Chong H Lee
发明人： Stjepan W Andrasic , Rakesh H Patel , Chong H Lee
IPC分类号： H03H11/26 , H03B5/24
CPC分类号： H03K5/133 , H03K3/0322 , H03K3/354 , H03L7/0995 , H03L7/10
摘要： A delay cell has selectable numbers of parallel load resistance transistors operable in parallel, and a similarly selectable number of bias current transistors connectable in parallel. The delay cell is preferably differential in construction and operation. A voltage controlled oscillator (“VCO”) includes a plurality of such delay cells connected in a closed loop series. Phase locked loop (“PLL”) circuitry includes such a VCO controlled by phase/frequency detector circuitry. The PLL can have a very wide range of operating frequencies as a result of the ability to control the number of load resistance transistors and bias current transistors that are active or inactive in each delay cell. Such activation/deactivation may be programmable or otherwise controlled.

6. 发明授权

US07525340B2 Programmable logic device architecture for accommodating specialized circuitry 失效
标题翻译：用于容纳专用电路的可编程逻辑器件架构
公开(公告)号：US07525340B2
公开(公告)日：2009-04-28
申请号：US11230002
申请日：2005-09-19
申请人： Sergey Y Shumarayev , Rakesh H Patel , Chong H Lee
发明人： Sergey Y Shumarayev , Rakesh H Patel , Chong H Lee
IPC分类号： G09F7/38 , H03K19/173 , H03K19/177 , H01L25/00
CPC分类号： H03K19/17704 , H03K19/17732 , H03K19/17744
摘要： A programmable logic device (PLD) having one or more programmable logic regions and one or more conventional input/output regions additionally has one or more peripheral areas including specialized circuitry. The peripheral specialized regions, which are not connected to the remainder of the programmable logic device (and may be made on separate dies from the remainder of the programmable logic device mounted on a common substrate), and one or both of the programmable logic regions and the conventional I/O regions, have contacts for metallization traces or other interconnections to connect the peripheral specialized regions to the remainder of the programmable logic device. The same PLD can be sold with or without the specialized circuitry capability by providing or not providing the interconnections. The peripheral specialized regions may include high-speed I/O (basic, up to about 3 Gbps, and enhanced, up to about 10-12 Gbps), as well as other types of specialized circuitry.
摘要翻译：具有一个或多个可编程逻辑区域和一个或多个常规输入/输出区域的可编程逻辑器件（PLD）还具有包括专用电路的一个或多个外围区域。外围专用区域不连接到可编程逻辑器件的其余部分（并且可以在与安装在公共衬底上的可编程逻辑器件的其余部分分开的管芯上）制造，以及一个或两个可编程逻辑区域常规I / O区域具有用于金属化迹线或其它互连的触点，以将外围专用区域连接到可编程逻辑器件的其余部分。通过提供或不提供互连，可以在具有或不具有专用电路能力的情况下出售相同的PLD。外围专业区域可能包括高速I / O（基本，高达约3 Gbps，增强，高达10-12 Gbps）以及其他类型的专用电路。

7. 发明授权

US07109743B2 Integrated circuit output driver circuitry with programmable preemphasis 有权
标题翻译：具有可编程预加重功能的集成电路输出驱动器电路
公开(公告)号：US07109743B2
公开(公告)日：2006-09-19
申请号：US11148046
申请日：2005-06-07
申请人： Sergey Y Shumarayev , Thomas H White , Rakesh H Patel , Wilson Wong
发明人： Sergey Y Shumarayev , Thomas H White , Rakesh H Patel , Wilson Wong
IPC分类号： H03K17/16
CPC分类号： H03K19/17744 , H03K19/018585 , H03K19/1778 , H04L25/0272 , H04L25/0286
摘要： Programmable logic device integrated circuitry having differential I/O circuitry is provided. The differential I/O circuitry may include output drivers for providing differential digital output data signals across pairs of output lines. A user may program the I/O circuitry to accommodate different high-speed differential I/O signaling standards. The user may also program the I/O circuitry to provide a desired amount of preemphasis to the output data signals.
摘要翻译：提供了具有差分I / O电路的可编程逻辑器件集成电路。差分I / O电路可以包括用于在输出线对之间提供差分数字输出数据信号的输出驱动器。用户可以对I / O电路进行编程，以适应不同的高速差分I / O信号标准。用户还可以对I / O电路进行编程，以向输出数据信号提供期望量的预加重。

8. 发明授权

US6107854A Variable speed path circuit and method 失效
标题翻译：变速路径电路及方法
公开(公告)号：US6107854A
公开(公告)日：2000-08-22
申请号：US62379
申请日：1998-04-17
申请人： Wilson Wong , John E. Turner , Thomas H. White , Rakesh H Patel
发明人： Wilson Wong , John E. Turner , Thomas H. White , Rakesh H Patel
IPC分类号： H03K5/00 , H03K19/003 , H03K19/017 , H03K19/0185 , H03H11/26
CPC分类号： H03K19/00384 , H03K19/01721 , H03K19/018585 , H03K2005/00078
摘要： A speed path circuit includes a reference circuit and adjustable drive components that can be turned on or off to vary the speed path in order to meet minimum delay specification for the circuit. In an embodiment, one or more differential amplifiers are used to detect the strength of example circuit elements and generate a reference signal. An optional embodiment includes a mechanism for disconnecting the reference circuit to avoid any DC current drain. The invention may be used in a wide range of integrated circuits and may also be used in a programmable logic device (PLD). Reference circuits may be disconnected from a power source by using programmable logic elements.
摘要翻译：速度路径电路包括参考电路和可调节的驱动部件，其可以被接通或关断以改变速度路径，以便满足电路的最小延迟规范。在一个实施例中，使用一个或多个差分放大器来检测示例电路元件的强度并产生参考信号。可选实施例包括用于断开参考电路以避免任何直流电流消耗的机构。本发明可以用于广泛的集成电路中，并且还可以用在可编程逻辑器件（PLD）中。参考电路可以通过使用可编程逻辑元件与电源断开连接。

9. 发明授权

US07590207B1 Modular serial interface in programmable logic device 有权
标题翻译：可编程逻辑器件中的模块化串行接口
公开(公告)号：US07590207B1
公开(公告)日：2009-09-15
申请号：US11256346
申请日：2005-10-20
申请人： Sergey Y Shumarayev , Rakesh H Patel , Wilson Wong , Tim Tri Hoang , William Bereza
发明人： Sergey Y Shumarayev , Rakesh H Patel , Wilson Wong , Tim Tri Hoang , William Bereza
IPC分类号： H04L7/00
CPC分类号： H03L7/087 , H04J3/0688 , H04L7/033
摘要： A serial interface for a programmable logic device can be used as a conventional high-speed quad interface, but also allows an individual channel, if not otherwise being used, to be programmably configured as a loop circuit (e.g., a phase-locked loop). This is accomplished by disabling the data loop of clock-data recovery circuitry in the channel, and reconfiguring the reference loop to operate as a loop circuit. In addition, instead of providing a high-speed quad interface having four channels and one or more clock management units (CMUs), a more flexible interface having five or more channels can be provided, and when it is desired to use the interface as a high-speed quad interface, one or more channels can be configured as loop circuits to function as CMUs.
摘要翻译：用于可编程逻辑器件的串行接口可以用作传统的高速四边形接口，但是也允许单独的通道（如果不另外使用）被可编程地配置为环路电路（例如，锁相环）。这是通过禁用通道中的时钟数据恢复电路的数据循环来实现的，并且重新配置参考环路以用作循环电路。此外，不是提供具有四个通道的高速四边形接口和一个或多个时钟管理单元（CMU），而是可以提供具有五个或更多个通道的更灵活的接口，并且当希望将接口用作高速四通道接口，一个或多个通道可以配置为循环电路，用作CMU。

10. 发明授权

US07304498B2 Clock circuitry for programmable logic devices 有权
标题翻译：可编程逻辑器件的时钟电路
公开(公告)号：US07304498B2
公开(公告)日：2007-12-04
申请号：US11432419
申请日：2006-05-10
申请人： William W Bereza , Shoujun Wang , Rakesh H Patel
发明人： William W Bereza , Shoujun Wang , Rakesh H Patel
IPC分类号： H01L25/00
CPC分类号： H03L7/07 , H03K19/1774 , H03K19/17744 , H03M9/00
摘要： Data transmitter circuitry on a programmable logic device (“PLD”) includes a plurality of channels of serializer circuitry, and a plurality of clock multiplier units (“CMUs”), each of which is associated with a respective subplurality of the serializer channels. Each CMU includes multiple reference clock signal sources, multiple phase-locked loop (“PLL”) circuits, and circuitry for allowing any PLL to get its reference input from any of the reference sources. Raw and centrally processed clock signals produced by each CMU are distributed to the serializer channels associated with that CMU and, at least in the case of the centrally processed signals, to the serializer channels associated with another CMU. The signal that controls release of parallel data to each serializer channel can be an output signal of that channel, or it can be an output signal of any CMU from which that channel can get a clock signal.
摘要翻译：可编程逻辑器件（“PLD”）上的数据发射器电路包括多个串行器电路的通道，以及多个时钟倍增器单元（“CMU”），每个时钟倍增器单元与串行器通道的相应子模式相关联。每个CMU包括多个参考时钟信号源，多个锁相环（“PLL”）电路和用于允许任何PLL从任何参考源获得其参考输入的电路。由每个CMU产生的原始和中央处理的时钟信号被分配到与该CMU相关联的串行器通道，并且至少在集中处理的信号的情况下分配给与另一个CMU相关联的串行器通道。控制并行数据释放到每个串行器通道的信号可以是该通道的输出信号，或者它可以是任何CMU的输出信号，该信道可以从该通道获得时钟信号。

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