NAS ARM 9

Networked-Attached-Storage Reference Design

Overview

Description

The Cirrus Logic® Networked-Attached-Storage (NAS) reference design, built around the EP9312 embedded processor, provides network storage and media server suppliers with a comprehensive platform to rapidly develop feature-rich, low-cost NAS products.

The EP9312 is a 200MHz ARM9™ system-on-a-chip integrated with key peripherals for NAS and related media server products. The NAS reference design includes the EP9312 processor, application software and a product reference design that allows ODMs and OEMs to rapidly deliver affordable network storage products. The reference design provides:

• Low bill-of-material cost via integration of dual IDE controllers, three USB 2.0 full-speed host interfaces and 10/100 Ethernet MAC.
• Auto-detect software functionality for simple installation and use.
• Fully featured NAS functionality including printer server, hot pluggable USB storage device support and group/user level security.
• Linux® board support package
• Additional integrated peripherals for media server applications including six-channel I²S audio, LCD interface, and 2D graphics accelerator.

Features

EP9312 Key Specifications for NAS

• ARM920T core
• 200MHz processor
• 100MHz bus
• MMU
• IDE — UDMA 3, two channels
• 10/100 Ethernet MAC
• Three USB 2.0 FS hosts
• Three UARTS
• IrDA interface
• SPI™ port
• MaverickCrunch™ floating point math co-processor

NAS Software

• Auto-detect for easy set-up
• Network file system server (Samba)
• Web-based configuration system
• Auto-backup feature
• Print server (CUPS)
• Group and user-level security
• RAID and mirroring modes (future)
• Hot-pluggable external storage device support (HDD, Flash Drive)
• Easily customizable user interface

EP9312 Key Specifications for Media NAS

• Great Cirrus Logic audio features
• SPI™, I²S, and AC’97 integration with 6-channel 24-bit audio
• Wide software codecs support: MP3, WMA™, AAC™, AAC Plus™, OGG formats
• Powerful user interface to access/manage content and view JPEGs
• Integrated display interface: LCD, TFT, and CRT displays
• 2D Graphics accelerator
• Touch Screen
• Up to 1024x768 resolution (XGA)
• TV out timing and interface signal support (NTSC and PAL)
• MaverickKey™
• CD writing capability

Linux® BSP

• Device drivers — for all integrated peripherals
• IP Routing — TCP/UDP/ARP support, DHCP client
• Collection of over 200 cross compiled packages
• Tool chains with ready to boot file systems
• Builds RAMDISK and BUSYBOX from scratch
• Runs Debian distro–wide range of applications

Hardware Design Kit

• Schematics and Gerbers based on EDB9315A board

Diagram

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