The first pull-down resistance unit supplies a ground voltage to a first node, thereby determining an initial pull-down code.
所述第一下拉电阻单元向第一节 点提供地电压，由此确定初始下拉码。
The impedance matching circuit includes a first pull-down resistance unit, a first pull-up resistance unit, and a code generation unit.
所述阻抗匹配电路包括第一下拉电阻单元、第一上拉电阻单元和码产生单元。
The code generation unit generates pull-down and pull-up calibration codes using the initial pull-down and pull-up codes as respective initial values.
所述码产生单元使用所述初始下拉和上拉码作为各自的初始值来产生下拉和上拉校准码。
The code generation unit generates pull-down and pull-up calibration codes using the initial pull-down and pull-up codes as respective initial values.
所述码产生单元使用所述初始下拉和上拉码作为各自的初始值来产生下拉和上拉校准码。
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