High speed differential pre-driver using common mode pre-charge

Details High speed differential pre-driver using common mode pre-charge High speed differential pre-driver using common mode pre-charge

2007-07-31

2007-07-31

Tran, Minh-Loan (Department: 2826)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S331000, C327S333000, C326S115000

Reexamination Certificate

active

10956260

ABSTRACT:
In general, the embodiments introduce a pre-charge state between an idle state (when no data in being transmitted) and an active state (when data is being transmitted). In the pre-charge state, both differential signals are pre-charged to the common mode voltage, which is also the crossover voltage. Similarly, an additional pre-charge state is inserted between the active state and the idle state when the signals transition from active to idle. Because both signals for each bit, including the first and last bits, are being driven from the same voltage level, the quality of the first and last bits are improved to be similar in quality to the middle bits.

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