Method and device for initializing an asynchronous latch chain
AssigneeInfineon Technologies AG
InventorsThilo Marx, Peter Schrögmeier
Life of this patent
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Abstract
A Method for initializing an asynchronous latch chain is described, wherein data are taken over through a latch stage at the beginning of the latch chain upon a request signal, the method comprising starting of a clock creation means, like for example a DLL (DLL=delay locket loop), for creating an internal clock on the basis of an external clock, resetting the asynchronous latch chain and applying a start signal to a request signal generation circuit whereupon the creation of a first request signal is enabled on the basis of the internal clock after the clock creation means is settled and after the asynchronous latch chain is reset.
Claims12
A Method for initialising an asynchronous latch chain, wherein data are taken over upon a request signal by a latch stage at the beginning of the latch chain, the method comprising:
- starting a clock creation means for creating an internal clock on the basis of an external clock;
- resetting the asynchronous latch chain;
- applying a start signal to a request signal generation circuit whereupon the creation of a first request signal is enabled on the basis of the internal clock after the clock creation means is settled and after the asynchronous latch chain is reset.
A Device for initialising an asynchronous latch chain, wherein the data are being taken over upon a request signal by a latch stage of the beginning of the latch chain, further comprising:
- a means for starting a clock creation means to create an internal clock on the basis of an external clock;
- a means for resetting the asynchronous latch chain;
- a request signal generation circuit responding to a start signal to enable a first request signal to be created on the basis of an internal clock;
- a means for applying a start signal to the request signal generation circuit after the clock creation means is settled and after the asynchronous latch chain is reset.
The Device of 6, wherein the means for applying the start signal further comprises:
- a means for ensuring that the start signal is only applied after the clock creation means is settled.
Dependencies are inferred from the claim text.