Eureka Technology Product Summary EP300 PowerPC Bus Arbiter FEATURES • Fully supports PowerPC™ 60x bus protocol, include PowerPC 603, 604, 740, 750 and 8260. • Supports up to eight PowerPC bus masters with unlimited slave device support. • Supports two outstanding bus accesses. • Supports address only transfer and address bus retry. • Independent address bus and data bus tenure with separate bus grant and data bus grant. •Option for fixed priority assignment or rotating priority scheme. • Designed for ASIC or programmable logic device implementations in various system environments. • Fully static design with edge triggered flip-flops. • Optimized for Actel SX-A, RTSX-S, AX, and APA product families. DESCRIPTIONS The EP300 PowerPC bus arbiter provides all the necessary functions to arbitrate multiple bus masters directly connected to the PowerPC host bus. The arbiter supports separate address and data bus tenure to realize the high performance allowed by the PowerPC bus architecture. Separate address bus grant and data bus grant signals are provided for each master device on the bus. The arbiter uses sophisticated built-in state machines to coordinate the address bus tenure and the data bus tenure. At any given cycle, up to two simultaneous bus accesses are allowed. Previous master data bus grant Address bus Priority Bus request One from each device Data bus grant One to each device Bus grant One to each device TS# ABB# DBB# TT PowerPC Bus © 2003 by Eureka Technology Inc. 4962 El Camino Real, Los Altos, CA 94022, USA Page 1 Tel: 1 650 960 3800 Fax: 1 650 960 3805 http://www.eurekatech.com Eureka Technology EP300 PowerPC Bus Arbiter The EP300 PowerPC bus arbiter comes with the options of rotating priority or fixed priority schemes to meet the requirements for different system environments. Actel Device Utilization Data Family Device Utilization Performance (-speed grade) SEQ COMB Total ProASICPlus APA075-STD 46 188 8% 82Mhz Axcelerator AX500-3 30 112 2% 133Mhz RTSX-S RT54SX32S-2 46 113 6% 87Mhz © 2003 by Eureka Technology Inc. 4962 El Camino Real, Los Altos, CA 94022, USA Page 2 RAM Tel: 1 650 960 3800 Fax: 1 650 960 3805 http://www.eurekatech.com