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    • 2. 发明授权
    • ECL to TTL voltage level translator
    • ECL到TTL电平转换器
    • US4644194A
    • 1987-02-17
    • US748362
    • 1985-06-24
    • Mark S. BirrittellaRobert R. MarleyWalter C. Seelbach
    • Mark S. BirrittellaRobert R. MarleyWalter C. Seelbach
    • H03K19/003H03K19/018H03K17/10H03K17/14H03K19/092
    • H03K19/00376H03K19/01812
    • A voltage level translator circuit is provided that translates an input voltage referenced to an ECL supply voltage V.sub.CC to a voltage referenced to a TTL supply voltage V.sub.EE independent of power supply voltage variations. A first and a second embodiment have reference circuits coupled to receive a data input signal for providing a single signal referenced to a first supply voltage terminal to a current mirror. An output circuit is coupled to the current mirror for providing an output signal referenced to the second supply voltage terminal. A third embodiment has a reference circuit coupled to receive a data input signal for referencing a voltage on a first supply voltage terminal to a voltage on a second supply voltage terminal. A voltage setting circuit is coupled to the reference circuit for setting a voltage within the reference circuit. An output circuit is coupled to the voltage setting circuit for providing an output voltage referenced to a voltage on the second voltage terminal and independent of variations in supply voltages.
    • 提供电压电平转换器电路,其将参考ECL电源电压VCC的输入电压转换为与电源电压变化无关的TTL电源电压VEE。 第一和第二实施例具有耦合以接收数据输入信号的参考电路,用于将参考第一电源电压端子的单个信​​号提供给电流镜。 输出电路耦合到电流镜,用于提供参考第二电源电压端子的输出信号。 第三实施例具有耦合以接收数据输入信号的参考电路,用于将第一电源电压端子上的电压参考为第二电源电压端子上的电压。 电压设定电路与参考电路耦合,用于设定参考电路内的电压。 输出电路耦合到电压设置电路,用于提供参考第二电压端子上的电压的输出电压,并且与电源电压的变化无关。
    • 4. 发明授权
    • Circuit design for high-speed digital communication
    • 电路设计用于高速数字通信
    • US06775339B1
    • 2004-08-10
    • US09384906
    • 1999-08-27
    • Paul T. WildesMark S. Birrittella
    • Paul T. WildesMark S. Birrittella
    • H04L700
    • G06F13/4243
    • The present invention provides a system for efficient, high speed, high bandwidth, digital communication where transmit distances are greater than a single clock period. The digital system operates based on a system clock. Within the digital system a transmit module transmits data along with a capture clock signal to a receive module where the transmission time between the modules is greater than one period of the system clock. The capture clock operates in a known relationship to the system clock at a frequency at least twice as slow as the system clock. The digital system also has a synchronizing clock that operates at the same frequency as the forwarded clock. When the data arrives at the receive module it is captured by a pair of memory devices operating on different phases of the capture clock. The memory devices feed the data to a multiplexor that selects, as a function of the synchronizing clock, between the outputs of the two memory devices. At this point the data has been synchronized with the system clock and can be captured using the system clock for processing in the receive module.
    • 本发明提供了一种用于有效,高速,高带宽的数字通信的系统,其中发射距离大于单个时钟周期。 数字系统基于系统时钟进行操作。 在数字系统中,发射模块将数据连同捕获时钟信号一起发送到接收模块,其中模块之间的传输时间大于系统时钟的一个周期。 捕获时钟以系统时钟的至少两倍的频率与系统时钟以已知的关系运行。 数字系统还具有与转发时钟频率相同的同步时钟。 当数据到达接收模块时,它由在捕获时钟的不同相位上操作的一对存储器件捕获。 存储器装置将数据馈送到多路器,多路复用器根据同步时钟在两个存储器件的输出之间进行选择。 此时,数据已与系统时钟同步,并可使用系统时钟进行捕获,以便在接收模块中进行处理。
    • 7. 发明授权
    • Transistor level verilog
    • 晶体管级Verilog
    • US07587305B2
    • 2009-09-08
    • US10180265
    • 2002-06-26
    • Robert J. LutzMark S. BirrittellaEric C. FrommHarro Zimmermann
    • Robert J. LutzMark S. BirrittellaEric C. FrommHarro Zimmermann
    • G06F17/50
    • G06F17/5022G06F17/5036
    • A method includes specifying a first set of interconnected devices associated with a first leaf cell in Verilog syntax, and specifying a second set of interconnected devices associated with a second leaf cell in Verilog syntax. A connection between the first leaf cell and the second leaf cell is also specified in Verilog syntax. This specifies a circuit. The functionality of the logic can be tested by running a logic simulation on the circuit without converting to Verilog syntax. The Verilog syntax, associated with the circuit, can be converted directly from Verilog syntax to a SPICE netlist. The SPICE netlist can be used to simulate the timing and other parameters of the circuit. The Verilog syntax can be used to verify the circuit. Also included are a computer readable medium including an instruction set for the above method, and a data structure necessary to carry out the above method.
    • 一种方法包括在Verilog语法中指定与第一叶单元相关联的第一组互连设备,以及在Verilog语法中指定与第二叶单元相关联的第二组互连设备。 在Verilog语法中也指定了第一个叶单元和第二个叶单元之间的连接。 这指定一个电路。 可以通过在电路上运行逻辑仿真而不转换为Verilog语法来测试逻辑的功能。 与电路相关的Verilog语法可以直接从Verilog语法转换为SPICE网表。 SPICE网表可用于模拟电路的时序和其他参数。 Verilog语法可用于验证电路。 还包括包括用于上述方法的指令集的计算机可读介质,以及执行上述方法所需的数据结构。
    • 8. 发明授权
    • Gallium arsenide bipolar ECL circuit structure
    • 砷化镓双极ECL电路结构
    • US4649411A
    • 1987-03-10
    • US682729
    • 1984-12-17
    • Mark S. Birrittella
    • Mark S. Birrittella
    • H01L27/06H01L29/732H01L29/72
    • H01L29/732H01L27/0605
    • A gallium arsenide integrated circuit structure is disclosed wherein each transistor has only two of three terminals exposed at the semiconductor surface, thereby decreasing both the area of the structure and parasitic wiring capacitance. A dielectric buried layer overlies a portion of the substrate and isolates a first region from the remaining chip. This first region serves as common terminals of two or more transistors. Aluminum gallium arsenide is formed both above and below the base region for increasing the efficiency of the junction by eliminating the need for a heavily doped emitters, thereby allowing for symmetry of emitter and collector regions both on the semiconductor surface and below.
    • 公开了一种砷化镓集成电路结构,其中每个晶体管仅在半导体表面处露出三个端子中的两个,从而减小结构的面积和寄生布线电容。 电介质掩埋层覆盖衬底的一部分,并将第一区与剩余芯片隔离。 该第一区域用作两个或更多个晶体管的公共端子。 在基极区域上方和下方形成砷化铝镓,以通过消除对重掺杂发射体的需要来提高结的效率,从而允许在半导体表面和下面的发射极和集电极区域的对称性。