参数资料
型号: TC86R4400
厂商: Toshiba Corporation
英文描述: RISC High Performance Microprocessor(精简指令集高性能微处理器)
中文描述: 高性能微处理器的RISC(精简指令集高性能微处理器)
文件页数: 3/4页
文件大小: 90K
代理商: TC86R4400
R4400SC/MC Multiprocessor
T O S H IB A A M E R IC A E L E C T R O N IC C O M P O N E N T S , IN C
.
3
R4400MC Features
¥ True 64-bit microprocessor with 64-bit integer and floating-
point operations, registers and virtual addresses
¥ Fully compatible with earlier 32-bit MIPS microprocessors
¥ Dual instruction issue with no restrictions on the type of
instruction issued
¥ Built-in support for multiprocessing
¥ On-chip Memory Management Unit (MMU) containing a fully
associative TLB whose entries have a variable page size rang-
ing from 4KB to 16MB
¥ On-chip ANSI/IEEE-754 standard floating-point unit with
precise exceptions
¥ 32 doubleword (64-bit) general-purpose registers and 32
doubleword floating-point registers
¥ 36-bit physical address accessing 64GB of physical
memory
¥ Built-in primary direct mapped caches with parity protection:
D 16KB instruction cache
D 16KB data cache
D Buffered write back with conTgurable 4 or 8 word line
size
¥ Built-in direct mapped secondary cache support:
D The secondary cache can range from 128KB to 4MB
D 128-bit interface to minimize cache miss latency
D Timing exibility for 128-bit secondary cache interface
D 64-bit system interface to allow speed matching of logic
and memory components with multiprocessing support
D ECC protection
¥ Dynamically configurable big-endian or little-endian byte
ordering
Figure 1. R4400 Block Diagram
Figure 2. R4400MC System Block Diagram
External
Secondary
Cache
RAMs
128 Data
64 Data
Secondary Cache Bus
Data, Tag, Addr, Control
64-bit DBus
64-bit IBus
System Bus
Integer
Unit
Memory Management Unit
System Coprocessor 0
(CP0)
Floating Point Unit
Item Coprocessor 1
(CP1)
16K Primary
Data
Cache
16K Primary
Instruction
Cache
Decode
Tag
Decode
Tag
FP Register File
FP Pipeline/Bypass
FP Status Register
FP Multiply
FP Divide
FP Add, Convert,
Square Root
Primary
Cache
Control
System
Secondary
Cache
Control
Pipeline
Control
ALU
Exception/Control Registers
Memory Management Unit Registers
Translation Lookside Buffer
(96 entries, software managed)
Address Unit
PC Incrementer
Register File
Integer Multiply/Divide
Load Aligner
Store Driver
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