Description
PMC-Sierra’s RM7065A is a highly integrated symmetric superscalar microprocessor capable of issuing two instructions each processor cycle. It has two high-performance 64-bit integer units as well as a high-throughput, fully pipelined 64-bit floating point unit.

FEATUREs
• Dual issue symmetric superscalar microprocessor with instruction prefetch optimized for system level price/performance
   • 300, 350 MHz operating frequency
   • >525 Dhrystone 2.1 MIPS @ 350 MHz
• High-performance system interface
   • 1000 MB per second peak throughput
   • 125 MHz max. freq., multiplexed address/data
   • Supports two outstanding reads with out-of-order return
   • Processor clock multipliers 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 7, 8, 9
• Integrated primary and secondary caches
   • All are 4-way set associative with 32 byte line size
   • 16 KB instruction, 16 KB data, 256 KB on-chip secondary
   • Per line cache locking in primaries and secondary
   • Fast Packet Cache™ increases system efficiency in networking applications
• High-performance floating-point unit — 800 MFLOPS maximum
   • Single cycle repeat rate for common single-precision operations and some double-precision operations
   • Single cycle repeat rate for single-precision combined multiply-add operations
   • Two cycle repeat rate for double-precision multiply and double-precision combined multiply-add operations
• MIPS IV superset instruction set architecture
   • Data PREFETCH instruction allows the processor to overlap cache miss latency and instruction execution
   • Single-cycle floating-point multiply-add
• Integrated memory management unit
   • Fully associative joint TLB (shared by I and D translations)
   • 64/48 dual entries map 128/96 pages
   • Variable page size
• Embedded application enhancements
   • Specialized DSP integer Multiply-Accumulate instructions, (MAD/MADU) and three-operand multiply instruction (MUL)
   • I&D Test/Break-point (Watch) registers for emulation & debug
   • Performance counter for system and software tuning & debug
   • Fourteen fully prioritized vectored interrupts — 10 external, 2 internal, 2 software
• Fully static CMOS design with dynamic power down logic