Integrated clock supply chip for a memory module, memory...

Details Integrated clock supply chip for a memory module, memory... Integrated clock supply chip for a memory module, memory...

2007-03-27

2007-03-27

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

Having selection between plural continuous waveforms

C327S407000

Reexamination Certificate

active

10886523

ABSTRACT:
An integrated chip has a clock signal input (1.1) for application of a first clock signal (clk1) and a clock signal output (1.2–1.5). Moreover, it has a phase locked loop (2), which, on the input side, is connected to the clock signal input (1.1) and serves far generating a second clock signal (clk2). Furthermore, the chip has a multiplexer (MUX), via which the first clock signal (clk1) or the second clock signal (clk2) can optionally be switched to the clock signal output (1.2–1.5), and a unit for frequency monitoring (3), which, on the input side, is connected to the clock signal input (1.1) and is designed and can be operated in such a way that, in the event of a limiting frequency (fmin) being undershot, the multiplexer (MUX) is caused to switch the first clock signal (clk1) to the clock signal output (1.2–1.5).

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