"The Au1550™ security network processor is a versatile high-performance, low-power, high integration security network System-on-a-Chip (SoC)
designed for wired and wireless applications where security is important. The processor accelerates networking and remote access applications
such as gateways and network addressable storage (NAS) units, wireless access points and Voice over Internet Protocol (VoIP) environments.
The Au1550 security network processor also brings leading-edge capabilities to other applications such as entertainment and set-top boxes,
network printers, thin clients and other uses. Low power consumption enables the Au1550 processor to support battery and
Power-over-Ethernet applications."

Accelerates both IPsec and SSL type VPN standards in hardware Directly supports DES,
3DES, AES, ARC-4, SHA-1, MD5 Implements entire IPsec packet processing in hardware
-no CPU burden True Random Number Generator (RNG) in hardware Robust security is
ideal for most business network onments-meets U.S. government and banking industry
requirements

1. DDR or SDRAM Memory Controller
-16/32-bit data; 14-bit address
- Speeds up to DDR400
- Adds 1:1 system bus to memory controller ratio Descriptor-based DMA (DDMA)

2. Descriptor-based DMA (DDMA)
- Linked list of DMA Transfer descriptors
- 16 channels
- Memory to memory, memory to peripheral, peripheral to memory
- Scatter/Gather and Strided accesses

3. 2 Ethernet MAC Controllers
- 10/100 Mbps

4. Static Controller
- 16/32-bit data; 29-bit address
- Support for NOR and NAND Flash
- PCMCIA and Compact Flash suppor

5. 4 Programmable Serial Controllers (PSCs)
- Each supports independently programmed protocols
- Support for AC’97, I2S, SPI, SMBus

6. High-Speed MIPS CPU Core
- 333, 400 or 500 MHz
- MIPS32 Instruction Set
- 32-bit Architecture

7. Highly Integrated System Peripherals
- 33/66MHz 32-bit PCI Controller (PCI 2.2-compatible)
- Two 10/100 Ethernet MAC controllers
- USB 1.1 device and host controllers
- Four Programmable Serial Controllers (PSCs) supporting AC’97, I2S, SPI, SMBus
- GPIO (43 total, 10 with dedicated system functions)
- Three UARTs
- PCMCIA interface

8. OS Support
- Microsoft® Windows® CE.NET
- Linux
- VxWorks