Introduction

The EZ-USB NX2LP™ (NX2LP) implements a USB 2.0 NAND Flash controller. This controller adheres to the Mass Storage Class Bulk-Only Transport Specification. The USB port of the NX2LP is connected to a host computer directly or through the downstream port of a USB hub. Host software issues commands and data to the NX2LP and receives status and data from the NX2LP using standard USB protocol.

The NX2LP supports industry leading 8-bit NAND Flash interfaces and both common NAND page sizes of 512 and 2k bytes. Eight chip enable pins allow the NX2LP to be connected to up to eight single or four dual device NAND Flash chips.

Certain NX2LP features are configurable, enabling the NX2LP to meet the needs of different design requirements.

Features

■ High (480-Mbps) or Full (12-Mbps) Speed USB Support

■ Both Common NAND Page Sizes Supported

❐ 512 bytes — Up to 1 Gbit Capacity

❐ 2K bytes — Up to 8 Gbit Capacity

■ Eight Chip Enable Pins

❐ Up to 8 NAND Flash Single Device Chips

❐ Up to 4 NAND Flash Dual Device Chips

■ Industry Standard ECC NAND Flash Correction

❐ 1 bit per 256 correction

❐ 2 bit error detection

■ Industry Standard (SmartMedia) Page Management for Wear

Leveling Algorithm, Bad Block Handling, and Physical to

Logical management

■ Supports 8-bit NAND Flash Interfaces

■ Supports 30 ns, 50 ns, and 100 ns NAND Flash Timing

■ Complies with USB Mass Storage Class Specification rev 1.0

■ CY7C68024 Complies with USB 2.0 Specification for

Bus-Powered Devices (TID# 40460274)

■ 43 mA Typical Active Current

■ Space Saving and Pb-free 56-QFN Package (8 mm × 8 mm)

■ Support for Board-level Manufacturing test through USB Interface

■ 3.3 V NAND Flash Operation

■ NAND Flash Power Management Support