公开(公告)号：US20060261844A1

公开(公告)日：2006-11-23

申请号：US11417970

申请日：2006-05-04

申请人： Tae-Hyoung Kim ,  Ji-Suk Kwon ,  Uk-Rae Cho

发明人： Tae-Hyoung Kim ,  Ji-Suk Kwon ,  Uk-Rae Cho

IPC分类号： H03K19/003

CPC分类号： H03K19/0005

摘要： An impedance control circuit for use in a semiconductor device reduces an impedance mismatch between pull-up and pull-down resistances without increasing a resolution. The impedance control circuit includes an impedance detector, an output driver and an impedance controller. The impedance detector generates a first output value to a detection pad connected between an external determination resistor and a pull-up transistor array, and outputs a second output value to a resistance divider terminal commonly connected between a pull-up and pull-down transistor array in response to a pull-up control code data and a pull-down control code data. The output driver has a commonly connected pull-up and pull-down transistor array, and a compensating unit connected to the pull-up and pull-down transistor array of the output driver, to compensate for quantization error of the pull-up and pull-down control code data. The impedance controller performs a comparison and counting operation so that the first and second output values of the impedance detector become approximated to a predetermined reference value, and generates the pull-up and pull-down control code data. Impedance mismatch between pull-up and pull-down resistances is reduced to half of a digital control resolution, substantially reducing transmission error or adverse effects on a setup/hold window of a receiver.

摘要翻译： 用于半导体器件中的阻抗控制电路减小上拉和下拉电阻之间的阻抗失配，而不增加分辨率。 阻抗控制电路包括阻抗检测器，输出驱动器和阻抗控制器。 阻抗检测器对连接在外部确定电阻器和上拉晶体管阵列之间的检测焊盘产生第一输出值，并将第二输出值输出到公共连接在上拉和下拉晶体管阵列之间的电阻分压器端子 响应于上拉控制代码数据和下拉控制代码数据。 输出驱动器具有公共连接的上拉和下拉晶体管阵列，以及连接到输出驱动器的上拉和下拉晶体管阵列的补偿单元，以补偿上拉和下拉的量化误差 下载控制代码数据。 阻抗控制器执行比较和计数操作，使得阻抗检测器的第一和第二输出值近似为预定的参考值，并产生上拉和下拉控制代码数据。 上拉和下拉电阻之间的阻抗失配降低到数字控制分辨率的一半，大大降低了对接收机的设置/保持窗口的传输误差或不利影响。

公开(公告)号：US07548086B2

公开(公告)日：2009-06-16

申请号：US11417970

申请日：2006-05-04

申请人： Tae-Hyoung Kim ,  Ji-Suk Kwon ,  Uk-Rae Cho

发明人： Tae-Hyoung Kim ,  Ji-Suk Kwon ,  Uk-Rae Cho

IPC分类号： H03K17/16 ,  H03K19/003 ,  H03K5/12

CPC分类号： H03K19/0005

摘要： An impedance control circuit includes an impedance detector, an output driver and an impedance controller. The impedance detector generates a first output value to a detection pad connected between an external determination resistor and a pull-up transistor array, and outputs a second output value to a resistance divider terminal commonly connected between a pull-up and pull-down transistor array in response to a pull-up control code data and a pull-down control code data. The output driver has a commonly connected pull-up and pull-down transistor array, and a compensating unit connected to the pull-up and pull-down transistor array of the output driver, to compensate for quantization error of the pull-up and pull-down control code data. The impedance controller performs a comparison and counting operation so that the first and second output values of the impedance detector become approximated to a predetermined reference value, and generates the pull-up and pull-down control code data.

摘要翻译： 阻抗控制电路包括阻抗检测器，输出驱动器和阻抗控制器。 阻抗检测器对连接在外部确定电阻器和上拉晶体管阵列之间的检测焊盘产生第一输出值，并将第二输出值输出到公共连接在上拉和下拉晶体管阵列之间的电阻分压器端子 响应于上拉控制代码数据和下拉控制代码数据。 输出驱动器具有公共连接的上拉和下拉晶体管阵列，以及连接到输出驱动器的上拉和下拉晶体管阵列的补偿单元，以补偿上拉和下拉的量化误差 下载控制代码数据。 阻抗控制器执行比较和计数操作，使得阻抗检测器的第一和第二输出值近似为预定的参考值，并产生上拉和下拉控制代码数据。

公开(公告)号：US07385414B2

公开(公告)日：2008-06-10

申请号：US11417969

申请日：2006-05-04

申请人： Tae-Hyoung Kim ,  Ji-Suk Kwon ,  Uk-Rae Cho

发明人： Tae-Hyoung Kim ,  Ji-Suk Kwon ,  Uk-Rae Cho

IPC分类号： H03K17/16 ,  H03K19/003

CPC分类号： H04L25/0278 ,  H03K19/0005

摘要： A drive circuit having impedance control includes an impedance matching array unit having a plurality of transistors, the plurality of transistors selectively driven in accordance with an array drive control signal generated by control code data, and an update prohibition control unit for generating a transfer control signal to prohibit driving the transistors during a first time interval occurring when internal data transition, and applying the transfer control signal to the impedance matching array unit.

摘要翻译： 具有阻抗控制的驱动电路包括具有多个晶体管的阻抗匹配阵列单元，所述多个晶体管根据由控制代码数据产生的阵列驱动控制信号选择性地驱动;以及更新禁止控制单元，用于产生传输控制信号 在内部数据转换期间发生的第一时间间隔期间禁止驱动晶体管，并将传输控制信号施加到阻抗匹配阵列单元。

公开(公告)号：US20060250157A1

公开(公告)日：2006-11-09

申请号：US11417969

申请日：2006-05-04

申请人： Tae-Hyoung Kim ,  Ji-Suk Kwon ,  Uk-Rae Cho

发明人： Tae-Hyoung Kim ,  Ji-Suk Kwon ,  Uk-Rae Cho

IPC分类号： H03K19/003

CPC分类号： H04L25/0278 ,  H03K19/0005

摘要： A drive circuit having impedance control includes an impedance matching array unit having a plurality of transistors, the plurality of transistors selectively driven in accordance with an array drive control signal generated by control code data, and an update prohibition control unit for generating a transfer control signal to prohibit driving the transistors during a first time interval occurring when internal data transition, and applying the transfer control signal to the impedance matching array unit.

摘要翻译： 具有阻抗控制的驱动电路包括具有多个晶体管的阻抗匹配阵列单元，所述多个晶体管根据由控制代码数据产生的阵列驱动控制信号选择性地驱动;以及更新禁止控制单元，用于产生传输控制信号 在内部数据转换期间发生的第一时间间隔期间禁止驱动晶体管，并将传输控制信号施加到阻抗匹配阵列单元。

公开(公告)号：US06947336B2

公开(公告)日：2005-09-20

申请号：US10410453

申请日：2003-04-08

申请人： Tae-Hyoung Kim ,  Uk-Rae Cho ,  Nam-Seog Kim

发明人： Tae-Hyoung Kim ,  Uk-Rae Cho ,  Nam-Seog Kim

IPC分类号： H03K19/0175 ,  G11C7/10 ,  G11C11/401 ,  G11C16/04

CPC分类号： G11C7/1057 ,  G11C7/1051 ,  G11C2207/105

摘要： A semiconductor device includes an output impedance control circuit, connected to a ZQ pad and an output buffer circuit, for controlling an impedance of the output buffer circuit according to an impedance of an external resistor connected with the ZQ pad.

摘要翻译： 半导体器件包括连接到ZQ焊盘和输出缓冲电路的输出阻抗控制电路，用于根据与ZQ焊盘连接的外部电阻器的阻抗来控制输出缓冲电路的阻抗。

公开(公告)号：US06930508B2

公开(公告)日：2005-08-16

申请号：US10626015

申请日：2003-07-24

申请人： Nam-Seog Kim ,  Uk-Rae Cho ,  Tae-Hyoung Kim

发明人： Nam-Seog Kim ,  Uk-Rae Cho ,  Tae-Hyoung Kim

IPC分类号： H03H11/40 ,  H03B1/00 ,  H03K19/003 ,  H04L25/02

CPC分类号： H04L25/0278

摘要： There is provided an integrated circuit which performs data input/output operations through a transmission line with a predetermined impedance. The integrated circuit includes a driver having a plurality of driving units, in which the driving units input/output data from/to the transmission line, and a controller for inputting an output data signal and applying a plurality of control signals to the driver, in which the control signals are generated in response to an output activation signal and impedance code signals related to states of the impedance. At least one driving unit is driven in response to the control signals, and the driver includes an on-chip termination circuit connected to an input buffer.

摘要翻译： 提供了通过具有预定阻抗的传输线执行数据输入/输出操作的集成电路。 集成电路包括具有多个驱动单元的驱动器，其中驱动单元从/向传输线输入/输出数据，以及用于输入输出数据信号并将多个控制信号施加到驾驶员的控制器， 其响应于与阻抗状态相关的输出激活信号和阻抗代码信号而产生控制信号。 响应于控制信号驱动至少一个驱动单元，并且驱动器包括连接到输入缓冲器的片上终端电路。

公开(公告)号：US20050146350A1

公开(公告)日：2005-07-07

申请号：US11031244

申请日：2005-01-06

申请人： Tae-Hyoung Kim ,  Nam-Seog Kim ,  Uk-Rae Cho

发明人： Tae-Hyoung Kim ,  Nam-Seog Kim ,  Uk-Rae Cho

IPC分类号： H03K19/0175 ,  H03H3/00 ,  H03K19/003 ,  H04L25/02

CPC分类号： H04L25/0278 ,  H03K19/00384 ,  H04L25/028

摘要： An impedance controller includes a current mirror section to generate an impedance current. At least one detector includes a transistor array and an impedance corresponding to the impedance current, the at least one detector operating responsive to a code generator. And an at least one code generator generates a first code to adjust a gate voltage of the transistor array by comparing an output of the at least one detector to a reference voltage and generates a second code to adjust a size of the transistor array by comparing the output from the at least one detector to the reference voltage.

摘要翻译： 阻抗控制器包括产生阻抗电流的电流镜部分。 至少一个检测器包括晶体管阵列和对应于阻抗电流的阻抗，所述至少一个检测器响应于代码发生器运行。 并且至少一个代码发生器通过将至少一个检测器的输出与参考电压进行比较来产生第一代码来调整晶体管阵列的栅极电压，并产生第二代码以通过比较晶体管阵列的尺寸来调整晶体管阵列的尺寸 从至少一个检测器输出到参考电压。

公开(公告)号：US07170318B2

公开(公告)日：2007-01-30

申请号：US11031244

申请日：2005-01-06

申请人： Tae-Hyoung Kim ,  Nam-Seog Kim ,  Uk-Rae Cho

发明人： Tae-Hyoung Kim ,  Nam-Seog Kim ,  Uk-Rae Cho

IPC分类号： H03K19/0175

CPC分类号： H04L25/0278 ,  H03K19/00384 ,  H04L25/028

摘要： An impedance controller includes a current mirror section to generate an impedance current. At least one detector includes a transistor array and an impedance corresponding to the impedance current, the at least one detector operating responsive to a code generator. And an at least one code generator generates a first code to adjust a gate voltage of the transistor array by comparing an output of the at least one detector to a reference voltage and generates a second code to adjust a size of the transistor array by comparing the output from the at least one detector to the reference voltage.

摘要翻译： 阻抗控制器包括产生阻抗电流的电流镜部分。 至少一个检测器包括晶体管阵列和对应于阻抗电流的阻抗，所述至少一个检测器响应于代码发生器运行。 并且至少一个代码发生器通过将至少一个检测器的输出与参考电压进行比较来产生第一代码来调整晶体管阵列的栅极电压，并产生第二代码以通过比较晶体管阵列的尺寸来调整晶体管阵列的尺寸 从至少一个检测器输出到参考电压。

公开(公告)号：US06839286B2

公开(公告)日：2005-01-04

申请号：US10353990

申请日：2003-01-30

申请人： Uk-Rae Cho ,  Tae-Hyoung Kim ,  Jeong-Suk Yang

发明人： Uk-Rae Cho ,  Tae-Hyoung Kim ,  Jeong-Suk Yang

IPC分类号： G11C7/10 ,  G11C16/06 ,  G11C11/34

CPC分类号： G11C29/028 ,  G11C16/06 ,  G11C2029/5002

摘要： An output impedance control circuit of a semiconductor device. A first transistor is connected to a pad and a level controller controls a gate voltage of the first transistor in response to a voltage of the pad and a reference voltage. A MOS array is connected between the pad and a power supply voltage and supplies current to the pad in response to an impedance control code. A first control circuit generates the impedance control code in response to whether a voltage of the pad is converging to the reference voltage. A second control circuit controls a pull-up impedance of the output buffer circuit in response to the first impedance control code when a voltage of the pad is converging to the reference voltage.

公开(公告)号：US07471109B2

公开(公告)日：2008-12-30

申请号：US11344592

申请日：2006-02-01

申请人： Tae-Hyoung Kim ,  Uk-Rae Cho

发明人： Tae-Hyoung Kim ,  Uk-Rae Cho

IPC分类号： H03K17/16

CPC分类号： H03K19/0005

摘要： Provided is an output impedance circuit, which has a constant output impedance regardless of a pad voltage, and an output buffer circuit including the output impedance circuit. The output impedance circuit includes an output stage and an impedance control stage. The output stage outputs a current corresponding to a DC bias voltage via an output terminal, and the impedance control stage controls the current flowing through the output stage in response to an output signal. The output stage includes a resistance component and a first MOS transistor. A first terminal of the resistance component is connected to the output terminal. A first terminal of the first MOS transistor is connected to a second terminal of the resistance component, a second terminal of the first MOS transistor is connected to a voltage source, and an input signal is input to a gate of the first MOS transistor.

摘要翻译： 提供一种与衬垫电压无关地具有恒定输出阻抗的输出阻抗电路和包括输出阻抗电路的输出缓冲电路。 输出阻抗电路包括输出级和阻抗控制级。 输出级通过输出端输出对应于直流偏置电压的电流，并且阻抗控制级响应于输出信号控制流过输出级的电流。 输出级包括电阻分量和第一MOS晶体管。 电阻部件的第一端子连接到输出端子。 第一MOS晶体管的第一端子连接到电阻部件的第二端子，第一MOS晶体管的第二端子连接到电压源，并且输入信号被输入到第一MOS晶体管的栅极。