Description
The IDT79RC4650 is a low-cost member of the IDT Microprocessor family, targeted to a variety of performance-hungry embedded applications. The RC4650 continues the IDT tradition of high-performance through high-speed pipelines, high-bandwidth caches and bus interface, 64-bit architecture, and careful attention to efficient control. The RC4650 reduces the cost of this performance relative to the RC4700 by removing functional units that are frequently unneeded for many embedded applications, such as double-precision floating point arithmetic and a TLB.

FEATUREs
◆ High-performance embedded 64-bit microprocessor
   – 64-bit integer operations
   – 64-bit registers
   – 100MHz, 133MHz, 150 MHz, 180MHz, 200MHz and 267MHz operation frequencies
◆ High-performance DSP capability
   – 133.5 Million Integer Multiply-Accumulate Operations/sec @ 267 MHz
◆ High-performance microprocessor
   – 133.5 M Mul-Add/second at 267MHz
   – 89 MFL0P/s at 250MHz
   – >640,000 dhrystone (2.1)/sec capability at 267MHz (352 dhrystone MIPS)
◆ High level of integration
   – 64-bit, 267 MHz integer CPU
   – 8KB instruction cache; 8KB data cache
   – Integer multiply unit with 133.5M Mul-Add/sec
◆ Low-power operation
   – Active power management powers-down inactive units
   – Standby mode
◆ Upwardly software compatible with IDT RISController Family
◆ Large, efficient on-chip caches
   – Separate 8kB Instruction and 8kB Data caches
   – Over 3200MB/sec bandwidth from internal caches
   – 2-set associative
   – Write-back and write-through support
   – Cache locking to facilitate deterministic response
◆ Bus compatible with RC4000 family
   – System interface provides bandwidth up to 1000 MB/S
   – Direct interface to 32-bit wide or 64-bit wide systems
   – Synchronized to external reference clock for multi-master operation
   – Socket compatible with IDT RC64475 and RC64575
◆ Improved real-time support
   – Fast interrupt decode Optional cache locking
◆ Note:“R” refers to 5V parts; “RV” refers to 3.3V parts; “RC” refers to both