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參數(shù)資料
| 型號： | RM7000-300T |
| 廠商： | PMC-SIERRA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | RM7000⑩ Microprocessor with On-Chip Secondary Cache Datasheet Released |
| 中文描述： | 64-BIT, 300 MHz, RISC PROCESSOR, PBGA304 |
| 封裝： | 31 X 31 MM, TBGA-304 |
| 文件頁數(shù)： | 12/54頁 |
| 文件大小： | 901K |
| 代理商： | RM7000-300T |
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Proprietary and Confidential to PMC-Sierra, Inc and for its Customer
’
s Internal Use
Document ID: PMC-2002175, Issue 1
12
RM7000
Microprocessor with On-Chip Secondary Cache Datasheet
Released
4
Hardware Overview
The RM7000 offers a high-level of integration targeted at high-performance embedded
applications. The key elements of the RM7000 are briefly described below.
CPU Registers
4.1
Like all MIPS ISA processors, the RM7000 CPU has a simple, clean user visible state consisting
of 32 general purpose registers (GPR), two special purpose registers for integer multiplication and
division, and a program counter; there are no condition code bits. Figure 2 shows the user visible
state.
Figure 2 CP0 Registers
4.2
Superscalar Dispatch
The RM7000 has an efficient symmetric superscalar dispatch unit which allows it to issue up to
two instructions per cycle. For purposes of instruction issue, the RM7000 defines four classes of
instructions: integer, load/store, branches, and floating-point. There are two logical pipelines, the
function
, or F, pipeline and the
memory
, or M, pipeline. Note however that the M pipe can execute
integer as well as memory type instructions.
Table 1 Instruction Issue Rules
F Pipe
one of:
integer, branch, floating-point,
integer mul, div
Figure 3 is a simplification of the pipeline section and illustrates the basics of the instruction issue
mechanism.
General Purpose Registers
63
0
Multiply/Divide Registers
63
HI
63
LO
0
r1
r2
0
0
Program Counter
63
PC
r29
r30
r31
0
M Pipe
one of:
integer, load/store
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相關(guān)代理商/技術(shù)參數(shù) |
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| RM7000A | 制造商:PMC 制造商全稱:PMC 功能描述:64-Bit MIPS RISC Microprocessor with Integrated L2 Cache |
| RM7000A-300T | 制造商:Quantum Effect Devices 功能描述:64-BIT, 300 MHz, MICROPROCESSOR, 304 Pin Plastic BGA |
| RM7000A-350T | 制造商:PMC-Sierra 功能描述:Microprocessor, 64 Bit, 304 Pin, Plastic, BGA |
| RM7000A-350TI | 制造商:PMC 制造商全稱:PMC 功能描述:RM7000Aa?￠ Microprocessor with On-Chip Secondary Cache Data Sheet Released |
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