●General Description
●The CENTAUR KS8695X, Multi-Port Gateway-on-a-Chip, delivers a new level of networking integration and
●performance for accelerating broadband gateway development. Key components integrated in the KS8695X
●include:
●• Integrated Layer 2 managed switch with five Fast Ethernet transceivers and patented mixed-signal low
●power technology, five media access control (MAC) units, a high-speed non-blocking switch fabric, a
●dedicated address look-up engine, an on-chip frame buffer memory, and LED controls. One port is partitioned
●for WAN interface with the other four ports for LAN access.
●• A 166MHz ARM™ (ARM992T) processor with memory management unit (MMU) and 8KB I-cache and 8KB D
●cache.
●• XceleRouter™ technology for the WAN and LAN interfaces.
●• Shared programmable 8/16/32-bit data bus and 22-bit address bus with up to 64MB total memory space for SDRAM, ROM, Flash, SRAM, and all peripheral devices.
●• Other peripheral support logic including GPIO, a watchdog timer, an interrupt controller, and a JTAG
●debugging interface.
●Complete hardware and software reference designs are available.
●The KS8695X represents a new level of total solution optimized for broadband gateway system development
●and renders speedy routing performance and connectivity interfaces for value-added networking expansions.
●Features
●•The CENTAUR KS8695X featuring XceleRouter tech nology is a single-chip multi-port gateway-on-a-chip with
●all the key components integrated for a high-perfor mance and low-cost broadband gateway.
●• ARM922T High-Performance CPU Core
●– ARM922T core at 166MHz
●– 8KB I-cache and 8KB D-cache
●– Memory management unit (MMU) for Linux and WinCE®
●– 32-bit ARM and 16-bit thumb instruction sets for smaller memory footprints
●• XceleRouter Technology
●– TCP/UDP/IP packet header checksum generation to offload CPU tasks
●– IPv4 packet filtering on checksum errors
●– Automatic error packet discard
●• Integrated Ethernet Transceivers and Switch Engine
●– Five 10/100 transceivers and five MACs (1P for WAN interface, 4P for LAN switching)
●– 10BASE-T, 100BASE-TX, and 100BASE-FX modes (FX on the WAN port)
●– On-chip SRAM as frame buffer memory
●– Wire-speed switching
●– VLAN ID and 802.1p tag/untag options
●– Extensive MIB counter management support
●– IGMP snooping for multicast packet filtering
●– Port-based VLAN
●– QoS/CoS packet prioritization support: per port, 802.1p and DiffServ-based
●– 802.1D Spanning Tree Protocol support
●– Dedicated 1K entry look-up engine
●– Automatic MDI/MDI-X crossover on all ports
●– Port mirroring/monitoring/sniffing
●– Broadcast storm protection with % control
●– Full- and half-duplex flow control
●• Memory and External I/O Interfaces
●– 8/16/32-bit wide shared data path for SDRAM, ROM/SRAM/Flash and external I/O
●– Total memory space up to 64MB
●– Intel®/AMD®
●-type Flash support
●• WAN and LAN DMA Engines and FIFO
●– DMA engine with burst mode support for efficient WAN and LAN data transfers
●– FIFOs for back-to-back packet transfers
●• Peripheral Support
●– 8/16/32-bit external I/O interface supporting PCMCIA or generic CPU/DSP host I/F
●– Eight general-purpose input/output (GPIO)
●– Two 32-bit timer counters (one watchdog)
●– Interrupt controller
●– ARM922T JTAG debug interface
●• Power Management
●– Reduced CPU and system clock speeds
●•System Design
●– Up to 166MHz CPU and 125MHz bus speed
●• Reference HW/SW Evaluation Kit
●– Hardware evaluation board (passes class B EMI)
●– Board support package including firmware source codes, linux kernel, and software stacks
●– Documentation for design and programming
●• Commercial Temperature Range: 0°C to +70°C
●• Available in 208-Pin PQFP
●Applications
●•Multi-port broadband gateway
●• Multi-port firewall and VPN appliances
●• Combination wireless and wireline gateway
●• Multi-port VoIP gateway
●• Fiber-to-the-home managed CPE
Part 3D Model
