Semiconductor integrated circuit

Details Semiconductor integrated circuit Semiconductor integrated circuit

2005-03-08

2005-03-08

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Clock or pulse waveform generating

C327S147000, C327S156000

Reexamination Certificate

active

06864734

ABSTRACT:
A semiconductor integrated circuit which realizes a reception circuit that can stably detect symbol values even in a case where, in the reception of serial transmission data, the serial transmission data has its phase shifted relative to the sampling clock signals or has its waveform degraded due to the deviation of the delay of a signal in a transmission line. The semiconductor integrated circuit comprises a first clock-signal generating circuit which generates a clock signal of N phases synchronized with an input clock signal, a second clock-signal generating circuit which generates a clock signal of M phases synchronized with one phase selected from among the N-phase clock signal generated by the first clock-signal generating circuit, and in which N≠M holds, and a computation circuit which finds a control value for use in selecting one phase from among the N-phase clock signal, on the basis of the logic value of the serial transmission data sampled using the N-phase clock signal and the M-phase clock signal.

REFERENCES:
patent: 5519718 (1996-05-01), Yokev et al.
patent: 5950115 (1999-09-01), Momtaz et al.
patent: 8-56240 (1996-02-01), None
patent: 11-88447 (1999-03-01), None
patent: 11-98130 (1999-04-01), None
patent: 2000-31951 (2000-01-01), None

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