发明名称 |
Techniques for serially transmitting on-chip termination control signals |
摘要 |
Techniques are provided for controlling on-chip termination (OCT) impedance using OCT calibration blocks that serially transmit OCT control signals to input/output (IO) blocks. The OCT control signals are serially transmitted through a shared conductor. An OCT calibration block can transmit OCT control signals to one or multiple IO blocks. The IO blocks can be programmed to select OCT control signals from one of the calibration blocks. Enable signals enable one or more of the IO blocks to receive the selected OCT control signals. The OCT control signals are used to control the on-chip termination impedance at one or more IO buffers.
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申请公布号 |
US7391229(B1) |
申请公布日期 |
2008.06.24 |
申请号 |
US20060356867 |
申请日期 |
2006.02.18 |
申请人 |
ALTERA CORPORATION |
发明人 |
SANTURKAR VIKRAM;YI HYUN MO;DOAN QUYEN |
分类号 |
H03K19/003 |
主分类号 |
H03K19/003 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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