描述 Description

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.

特性 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 PQFPApplications
?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

簡介

KSZ8695X屬于集成電路（IC）的專用IC。由制造生產(chǎn)的KSZ8695X專用 IC專用專用集成電路 (IC) 或芯片設計用于執(zhí)行特定功能。這個類別包括可尋址開關、空芯儀表驅動器、音視頻開關、驗證芯片、自動放電、時鐘發(fā)生器、彩色掃描儀，以及各種應用所用的其他許多集成電路。