先对ONFI标准进行了介绍，然后再设计了一种支持ONFI2．1标准源同步高速模式的NAND Flash控制器，包括状态机的设计，接口的设计等。对设计中遇到的源同步模式下，信号的对齐问题进行了说明，并提出了一种解决方法。同时设计中还会遇到数据跨时钟域传输的问题，本文也给出了解决办法。最后仿真和综合结果表明，本文的设计完全满足标准要求，具有实际的使用价值。

Open NAND Flash Interface Specification, Revision 4.0 04 02 2014; This specification defines a standardized NAND Flash device interface that provides the means for a system to be designed that supports a range of NAND Flash devices without direct design pre-association. The solution also provides the means for a system to seamlessly make use of new NAND devices that may not have existed at the time that the system was designed.

ONFI规范各版本合集，学习NAND FLASH必备，仅用于学习交流。

移动开发-支持ONFI和Toggle模式的NAND Flash控制器设计.pdf

最新的ONFI3.2的协议，NAND Flash的最新标准，欢迎大家下载，非常好的Spec

最新nand flash规范，很详细，对理解nand flash工作原理有很大帮助。

This specification defines a standardized NAND Flash device interface that provides the means for a system to be designed that supports a range of NAND Flash devices without direct design pre-association. The solution also provides the means for a system to seamlessly make use of new NAND devices that may not have existed at the time that the system was designed.

nand onfi 协议

ONFI 4.2 协议，最新版本的NAND Flash开放标准接口规范，是nand flash硬件设计和驱动开发的必备文档

ONFI接口白皮书，适合初学者。