Patent ID: 7813192

Claim:
A signal capture system for capturing a data signal using a data strobe signal having a preamble of strobe signal transitions, the system comprising: a decoder coupled to receive a memory command signal corresponding to a data transfer, the decoder being configured to generate a data start signal after a delay period from receiving the memory command signal corresponding to a data transfer; a data latch circuit having a data input terminal coupled to receive a data signal and a clock input terminal coupled to receive the data strobe signal, the data latch circuit being operable to capture bits of the received data signal responsive to respective transitions of the data strobe signal and to output the captured bits in serial form; a delay circuit coupled to receive a data strobe signal, the delay circuit being configured to delay the data strobe signal to generate a delayed data strobe signal; and a deserializer circuit coupled to the delay circuit to receive the delayed data strobe signal and coupled to the data latch circuit to receive the captured bits in serial form from the data latch circuit, the deserializer circuit being configured to store a plurality of the captured bits output from the data latch circuit, deserializer circuit further being configured to output the stored plurality of the captured bits in parallel form responsive to the data start signal in synchronism with a transition of the delayed data strobe signal.