Memory write-in training method and system

Abstract

The invention provides a memory write-in training method. The memory write-in training method comprises the following steps: writing a data signal into a memory at a first rate; writing the strobe signal and the data signal into the memory at a second rate, wherein the first rate is smaller than the second rate; reading data signals written into the memory at a first rate and a second rate respectively as a first signal and a second signal respectively; and in response to a difference between the second signal and the first signal, adding at least one delay chain on at least one of the strobe signal and the data signal.

Description

technical field [0001] The present application relates to the field of memory, in particular to a method and system for memory writing training. Background technique [0002] With the popularization of the Internet, mobile terminals such as mobile phones, tablet computers, and mobile hard disks have an increasing demand for non-volatile memories with large capacity, low power consumption, and high reliability. As a non-volatile memory with large capacity, fast read and write speed, and low power consumption, NAND is widely used. [0003] With the continuous development of flash memory technology, the data transmission rate begins to adopt the double data rate (Double Data Rate, referred to as DDR) mode transmission, and the DDR mode uses the rising edge and falling edge of the strobe signal (DQS; Data strobe signal) to carry out the data signal (DQS). ; Data signal) sampling, so a certain delay adjustment is required for the sampled data signal and the strobe signal, so tha...

AI Technical Summary

Problems solved by technology

The more common method currently used is to only add a delay chain to the strobe signal for adjustment, but the added delay chain is relatively large and consumes a lot of power

Due to power consumption and internal timing constraints, it is difficult to make a delay chain very long

Images