RM7000-266T - Brand New Quantum Storage Solutions IC Chips
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Description
PMC-Sierra’s RM7000-266T 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. To keep its multiple execution units running efficiently, the RM7000-266T integrates 16 KB 4-way set associative instruction and data caches, backed up by an integrated 256 KB 4-way set associative secondary cache. An optional external tertiary cache provides high-performance capability even in applications with very large data sets. The RM7000-266T is ideally suited for high-end embedded control applications such as internetworking, high-performance image manipulation, high-speed printing, and 3-D visualization. It is also applicable to the low-end workstation market where its balanced integer and floating-point performance, and direct support for a large tertiary cache (up to 8 MB), provide outstanding price/performance.
Specifications and features
- Dual Issue symmetric superscalar microprocessor with instruction prefetch optimized for system level price/performance
- Operating frequency: 200, 250, 266, 300 MHz
- >500 Dhrystone 2.1 MIPS @ 300 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 cache
- Per line cache locking in primaries and secondary
- Fast Packet Cache™ increases system efficiency in networking applications
- Integrated external cache controller (up to 8 MB)
- High-performance floating-point unit — 600 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
- RM5271 pin compatible, 304 pin TBGA package, 31x31 mm
Application Scenarios
The RM7000-266T microprocessor is widely used in high-end embedded control applications such as internetworking, high-performance image manipulation, high-speed printing, and 3-D visualization. It is also utilized in the low-end workstation market due to its balanced integer and floating-point performance and direct support for a large tertiary cache.
Comparison
Advantages- Highly integrated superscalar microprocessor
- Capable of issuing two instructions each processor cycle
- High-performance 64-bit integer units
- High-throughput, fully pipelined 64-bit floating point unit
- 16 KB 4-way set associative instruction and data caches
- Integrated 256 KB 4-way set associative secondary cache
- Optional external tertiary cache for high-performance capability
- Ideal for high-end embedded control applications
- Direct support for a large tertiary cache (up to 8 MB)
- Outstanding price/performance ratio
Disadvantages- Operating frequency options limited to 200, 250, 266, and 300 MHz
- Not suitable for applications with higher operating frequency requirements
- No support for larger external caches beyond 8 MB
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Datasheet
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- Datasheet: Download RM7000-266T
- Chipdatas Part: CD93-RM7000-266T
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/10/01 11:04 +0800
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- Full or Partial Refund , If the item is not as described
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