公开(公告)号：US06940303B2

公开(公告)日：2005-09-06

申请号：US10721203

申请日：2003-11-25

申请人： Roy L. Vargas

发明人： Roy L. Vargas

IPC分类号： G06F1/00 ,  H03H7/40 ,  H03K19/003 ,  H04L25/02

CPC分类号： H03H7/40 ,  H04L25/0278

摘要： A method to establish an adjustable on-chip impedance within a predetermined range that involves establishing a reference current for the adjustable on-chip impedance and applying this reference current to the adjustable on-chip impedance. A voltage produced by applying the reference current to the adjustable on-chip impedance is sensed and compared with the comparator or other similar processor to a reference voltage. This comparison allows the adjustable on-chip impedance to be tuned when the comparison of the sense voltage and the reference voltage is unfavorable. Tuning the impedance results in an impedance value within a predetermined range that accounts for variances of both the reference current and reference voltage.

摘要翻译： 一种在预定范围内建立可调片上阻抗的方法，其包括建立用于可调节片上阻抗的参考电流并将该参考电流施加到可调片上阻抗。 通过将参考电流施加到可调节片上阻抗产生的电压被感测并与比较器或其它类似处理器相比较以参考电压。 当比较感测电压和参考电压不利时，这种比较可以调节可调片上阻抗。 调谐阻抗导致在考虑参考电流和参考电压的方差的预定范围内的阻抗值。

公开(公告)号：US07366577B2

公开(公告)日：2008-04-29

申请号：US10351797

申请日：2003-01-27

申请人： Leonard J DiSanza ,  David T. Roach ,  Roy L. Vargas ,  Daniel T Bogard

发明人： Leonard J DiSanza ,  David T. Roach ,  Roy L. Vargas ,  Daniel T Bogard

IPC分类号： G06F17/00

CPC分类号： H04R29/001 ,  H04R29/004

摘要： The programmable analog input/output integrated circuit system includes a plurality of integrated circuit pins, an analog input/output circuit, a control module, and a switching module. The analog input/output circuit is coupled to the plurality of pins and determines the input/output status of each of the pins. The control module generates an I/O control signal and a switching control signal based on the input/output status of the integrated circuit pins. The I/O control signal is provided to the analog I/O circuit, which configures itself as an input or output based on the I/O control signal. The control module provides the switching control signal to the switching module, which configures itself to couple the analog input and/or analog output to corresponding functional circuitry of the corresponding integrated circuit.

摘要翻译： 可编程模拟输入/输出集成电路系统包括多个集成电路引脚，模拟输入/输出电路，控制模块和开关模块。 模拟输入/输出电路耦合到多个引脚，并确定每个引脚的输入/输出状态。 控制模块基于集成电路引脚的输入/输出状态产生I / O控制信号和开关控制信号。 I / O控制信号被提供给模拟I / O电路，其基于I / O控制信号将其自身配置为输入或输出。 控制模块向开关模块提供开关控制信号，开关模块将其配置为将模拟输入和/或模拟输出耦合到对应的集成电路的相应功能电路。