Apparatus, system and method for generating self-generated strobe signal for peripheral device
AssigneeSamsung Electronics Co., Ltd.
InventorsHyun-Sang Park, Suk-Ki Yoon
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Abstract
A self-generated strobe signal generator generates a self-generated strobe signal for a peripheral device using a peripheral device selection signal and a clock signal, without using a conventional strobe signal for all of the peripheral devices. Using the self-generated strobe signal synchronized to the clock signal, a delay time of the conventional strobe signal due to a high fan-out capability requirement and a long path length may be reduced and an operating frequency of an entire system may be improved.
Claims11
A bus system comprising:
- a bus master, coupled between a main bus and a peripheral bus, configured to generate a peripheral device selection signal, a read/write mode control signal and an address signal in response to a clock signal, the peripheral device selection signal being used for transferring data between the main bus and a plurality of peripheral devices coupled to the peripheral bus;
- and
- a self-generated strobe signal generator configured to generate a self-generated strobe signal for controlling the data input/output of the plurality of the peripheral devices in response to the peripheral device selection signal and the clock signal.
A self-generated strobe signal generator comprising:
- a logical AND circuit configured to receive a peripheral device selection signal and an inverted signal of a self-generated strobe signal;
- and
- a flip-flop configured to receive an output signal of the logical AND circuit to operate in response to a clock signal, and configured to generate the self-generated strobe signal and the inverted signal of the self-generated strobe signal that are used for controlling data input/output of a peripheral device selected by the peripheral device selection signal.
A method of generating a self-generated strobe signal for peripheral devices, the method comprising:
- performing a logical AND operation on a peripheral device selection signal and an inverted signal of a self-generated strobe signal to store a signal resulting from the logical AND operation, the peripheral device selection signal being synchronized with a first clock cycle of a clock signal;
- and
- outputting the self-generated strobe signal for controlling data input/output of a peripheral device using the stored signal in response to the clock signal during a second clock cycle following the first clock cycle.
Dependencies are inferred from the claim text.