Dynamic calibration of I/O power supply level

Details Dynamic calibration of I/O power supply level Dynamic calibration of I/O power supply level

2007-10-16

2007-10-16

Mai, Lam T. (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

C341S050000

Reexamination Certificate

active

10741680

ABSTRACT:
An input/output interface is used to transmit data between a transmitting circuit and a receiving circuit. Selectively during both system startup and system operation, a known bit pattern transmitted by the transmitting circuit is compared to a received bit pattern. The received bit pattern may be seen at the receiving circuit or a voltage regulator that is used to control the power supply level of the input/output interface. Dependent on the comparison of the known bit pattern and the received bit pattern, a bit error rate across the input/output interface is determined, in response to which the voltage regulator adjusts the power supply level of the input/output interface.

REFERENCES:
patent: 7028240 (2006-04-01), Bautista et al.
patent: 7043683 (2006-05-01), Amick et al.
patent: 7159086 (2007-01-01), Bress et al.
patent: 2004/0203477 (2004-10-01), Carballo et al.

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