PCI-X 2.0 receiver with initial offset for biased idle transmission line
AssigneeLSI Logic Corporation
InventorFrank Gasparik
Life of this patent
Estimating the term…
Abstract
A receiver with initial offset for biased idle transmission line suitable for providing a programmable amount of initial offset. The receiver comprises a standard differential receiver and one or more initial offset modules. Each initial offset module includes a transistor and two or more switches, which control the amount of offset to the differential receiver. A first switch receives a digital signal, which programs the amount of offset and a complementary digital signal is sent to a second switch to control the addition of the selected initial offset module(s).
Claims21
A method for maintaining a defined output state for a differential receiver connected to an idle state bus:
- detecting of the bus entering an idle state;
- and
- redistributing a current flow between a first transistor and a second transistor in the differential receiver when said bus enters said idle state, redistributing of current flow ensuring said defined output state by offsetting instantaneous process conditions causing instability during said idle state.
A monitoring assembly for a bus, comprising:
- means for detecting when said bus enters an idle state;
- a differential receiver coupled to said detecting means;
- and
- means for redistributing current flow within said differential receiver, said redistributing means being coupled to said differential receiver, wherein said redistributing means redirects current flow within said differential receiver to provide a defined output state for said differential receiver by offsetting instantaneous process conditions causing instability during said idle state.
A data transfer system, comprising:
- a driver;
- a bus coupled to the driver;
- a differential receiver coupled to said bus;
- and
- at least one initial offset module coupled to said differential receiver, wherein said at least one initial offset module is capable of providing an adjustable offset to said differential receiver when said bus enters an idle state, said adjustable offset ensuring said differential receiver provides a defined output state by offsetting instantaneous process conditions causing instability in said differential receiver during said idle state.
Dependencies are inferred from the claim text.