Overview: Obsolescence Notice This product is obsolete. This information is available for your convenience only.
http://www.DataSheet4U.net/ For more information on Zarlink’s obsolete products and replacement product lists, please visit
http://products.zarlink.com/obsolete_products/ datasheet pdf - http://www.DataSheet4U.net/ P R E L I M I N A R Y I N F O R M A T I O N Distinctive Characteristics
t Highly integrated central switch controller t State of the art 0.35 micron 3.3 Volt CMOS process t 256-PIN PQFP package t Operating frequency ◊ ◊ ◊ ◊ ◊ ◊ -40 -50 -66 40 MHz maximum 50 MHz maximum 66 MHz maximum SC220 – XpressFlow Engine
XpressFlow 2020 Ethernet Routing Switch Chipset CAM (Optional) ADDRESS MAPPING TABLE 16 SC220 t 16-bit external CAM interface Supports ½ k to 16k MAC addresses
CONTROL BUFFER MEMORY XpressFlow
32 t 32-bit Control Buffer Memory interface Supports 128k to 1M bytes Utilize high performance 32-bit Synchronous Burst SRAM ENGINE t Hardware assisted Buffer and Queue Management to minimize CPU overhead t 32-bit Management Bus I/O interface ◊ ◊ ◊ Allows host to access CAM and Control Buffer Memory Supports Big and Little Endian CPUs Direct interface with various different standard microprocessors including 386, 486 families and Motorola MPC series embedded processors Switching bandwidth
http://www.DataSheet4U.net/ 32 XpressFlow BUS 32 XpressFlow BUS t 32-bit XpressFlow Bus Interface ◊ −1.28 Gbps @ 40 MHz system clock −1.60 Gbps @ 50 MHz system clock −2.10 Gbps @ 66.
