CLEAN DATA STROBE SIGNAL GENERATING CIRCUIT IN READ INTERFACE DEVICE

摘要

Disclosed is a clean data strobe signal generating circuit in a read interface device. The clean data strobe signal generating circuit includes receivers configured to output first and second single ended data strobe signals. In the circuit, a gate signal generating unit is configured to generate a data strobe gate signal synchronized with the first single ended data strobe signal using the first and second single ended data strobe signals and a memory gate signal of which the pulse width varies in accordance with a burst length after termination of a read latency. The gating unit is configured to generate a clean data strobe signal using the first single ended data strobe signal and the data strobe gate signal.

主权项

1. A clean data strobe signal generating circuit, comprising:
a first receiver configured to receive a differential data strobe signal comprising at least a first input data strobe signal and a second input data strobe signal, and output a first single ended data strobe signal; a second receiver configured to receive the second input data strobe signal and a reference voltage signal, and based on the received second input data strobe signal and the reference voltage signal, output a second single ended data strobe signal; a gate signal generator configured to generate a data strobe gate signal synchronized with the first single ended data strobe signal based on the first and second single ended data strobe signals and a memory gate signal, the memory gate signal including a pulse width that varies in accordance with a burst length after termination of a read latency; and at least one logic gate configured to receive the first single ended data strobe signal and the data strobe gate signal to generate a clean data strobe signal for receiving read data.