Invention Grant
US08659319B2 Circuitry and method minimizing output switching noise through split-level signaling and bus division enabled by a third power supply
有权
电路和方法通过由第三电源使能的分级信号和总线划分来最小化输出开关噪声
- Patent Title: Circuitry and method minimizing output switching noise through split-level signaling and bus division enabled by a third power supply
- Patent Title (中): 电路和方法通过由第三电源使能的分级信号和总线划分来最小化输出开关噪声
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Application No.: US13420823Application Date: 2012-03-15
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Publication No.: US08659319B2Publication Date: 2014-02-25
- Inventor: Timothy M. Hollis
- Applicant: Timothy M. Hollis
- Applicant Address: US ID Boise
- Assignee: Micron Technology, Inc.
- Current Assignee: Micron Technology, Inc.
- Current Assignee Address: US ID Boise
- Agency: Schwegman, Lundberg & Woessner, P.A.
- Main IPC: H03K19/082
- IPC: H03K19/082

Abstract:
Disclosed herein are circuitry and methods for transmitting data across a parallel bus using both high common mode and low common mode signaling. The transmitter stages are configured to work with two of three possible power supply voltages: a high Vddq voltage, a low Vssq voltage, and an intermediate Vx voltage. In one embodiment, the odd numbered transmitter stages, that drive the odd numbered outputs to the bus, use the Vddq and Vx supplies, such that the odd numbered outputs comprise high common mode signals. The even numbered transmitter stages, that drive the even numbered outputs to the bus, use the Vx and Vssq supplies, such that the even numbered outputs comprise low common mode signals.
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