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    • 8. 发明申请
    • Operating A Demultiplexer On An Inter-Integrated Circuit ('I2C') Bus
    • 在内部集成电路(“I2C”)总线上操作解复用器
    • US20130343197A1
    • 2013-12-26
    • US13530245
    • 2012-06-22
    • Michael DeCesarisSteven C. JacobsonLuke D. RemisGregory D. Sellman
    • Michael DeCesarisSteven C. JacobsonLuke D. RemisGregory D. Sellman
    • H04L12/26
    • G06F13/4291
    • Operating a demultiplexer on an I2C bus, the demultiplexer including a set of input signal lines from an I2C master and a plurality of sets of output signal lines, the demultiplexer configured to couple the inputs among the output in dependence upon a demultiplexer select signal line that couples the demultiplexer to a rise time detection circuit, where the rise time detection circuit is also coupled to the input signal lines and the rise time detection circuit: monitors a voltage of at least one of the input signal lines, including: receiving, from the I2C master, a signal on one of the lines; and detecting rise time of the signal; and if the rise time of the signal is less than a predefined threshold, configuring the demultiplexer to vary the coupling of the input signal lines from a first set of outputs to a second set.
    • 在I2C总线上操作解复用器,解复用器包括来自I2C主机和多组输出信号线的一组输入信号线,该多路分配器被配置为根据解复用器选择信号线在输出之间耦合输入 将解复用器耦合到上升时间检测电路,其中上升时间检测电路还耦合到输入信号线和上升时间检测电路:监视至少一个输入信号线的电压,包括:从 I2C主机,其中一条信号; 并检测信号的上升时间; 并且如果信号的上升时间小于预定阈值,则配置解复用器以改变输入信号线与第一组输出到第二组的耦合。
    • 9. 发明授权
    • Dynamically optimizing bus frequency of an inter-integrated circuit (‘I2C’) bus
    • 动态优化集成电路(“I2C”)总线的总线频率
    • US08959380B2
    • 2015-02-17
    • US13467332
    • 2012-05-09
    • Michael DecesarisSteven C. JacobsonLuke D. RemisGregory D. Sellman
    • Michael DecesarisSteven C. JacobsonLuke D. RemisGregory D. Sellman
    • G06F1/08
    • G06F1/324G06F9/44G06F13/38G06F13/4282
    • Optimizing an I2C bus frequency, the bus including signal lines coupling a master and slave nodes, a signal line coupled to a rise time detection circuit monitoring a voltage of the signal line, the voltage alternating between a logic low and logic high, where optimizing the frequency includes: detecting, during a rise in the signal line, a first voltage, the first voltage being greater than the logic low voltage; starting a counter to increment once for each clock period of the circuit; detecting a second voltage on the signal line, the second voltage greater than the first and less than the logic high; stopping the counter; calculating, in dependence upon the clock period and the counter value, a rise time; determining whether the rise time is greater than a maximum threshold; and increasing the I2C bus frequency if the calculated rise time is greater than the maximum threshold.
    • 优化I2C总线频率,总线包括耦合主节点和从节点的信号线,耦合到上升时间检测电路的信号线监视信号线的电压,电压在逻辑低电平和逻辑高电平之间交替,其中优化 频率包括:在信号线上升期间检测第一电压,第一电压大于逻辑低电压; 启动一个计数器,为电路的每个时钟周期增加一次; 检测信号线上的第二电压,第二电压大于第一电压并小于逻辑高电平; 停止柜台 根据时钟周期和计数器值计算上升时间; 确定上升时间是否大于最大阈值; 并且如果计算的上升时间大于最大阈值,则增加I2C总线频率。
    • 10. 发明授权
    • Operating a demultiplexer on an inter-integrated circuit (‘I2C’) bus
    • 在集成电路(“I2C”)总线上操作多路分解器
    • US08954634B2
    • 2015-02-10
    • US13530245
    • 2012-06-22
    • Michael DeCesarisSteven C. JacobsonLuke D. RemisGregory D. Sellman
    • Michael DeCesarisSteven C. JacobsonLuke D. RemisGregory D. Sellman
    • G06F3/00
    • G06F13/4291
    • Operating a demultiplexer on an I2C bus, the demultiplexer including a set of input signal lines from an I2C master and a plurality of sets of output signal lines, the demultiplexer configured to couple the inputs among the output in dependence upon a demultiplexer select signal line that couples the demultiplexer to a rise time detection circuit, where the rise time detection circuit is also coupled to the input signal lines and the rise time detection circuit: monitors a voltage of at least one of the input signal lines, including: receiving, from the I2C master, a signal on one of the lines; and detecting rise time of the signal; and if the rise time of the signal is less than a predefined threshold, configuring the demultiplexer to vary the coupling of the input signal lines from a first set of outputs to a second set.
    • 在I2C总线上操作解复用器,解复用器包括来自I2C主机和多组输出信号线的一组输入信号线,该多路分配器被配置为根据解复用器选择信号线在输出之间耦合输入 将解复用器耦合到上升时间检测电路,其中上升时间检测电路还耦合到输入信号线和上升时间检测电路:监视至少一个输入信号线的电压,包括:从 I2C主机,其中一条信号; 并检测信号的上升时间; 并且如果信号的上升时间小于预定阈值,则配置解复用器以改变输入信号线与第一组输出到第二组的耦合。