Patent ID: 7054221
Filing Date: 2006-05-30
Classification: G11C

Abstract:
1. A data pass control device for masking a write ringing in a write operation after generating a predetermined length of data strobe signal in a DDR SDRAM, the data pass control device comprising: a data input buffer for receiving data inputted from the outside of the device; a data strobe buffer for receiving a predetermined length of data strobe signal inputted from the outside of the device and outputting first and second control signals; a data latch for storing the data outputted from the data input buffer, in response to the first and second control signals; a data strobe buffer controller for outputting a third control signal to control an operation of the data strobe buffer; and a write operation period detector for detecting a write operation period during a write operation and outputting a fourth control signal to control the data strobe buffer controller,