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Network Processing Engine and Network Services Engine Installation and Configuration
OL-4448-12
Chapter 1 NPE-100, NPE-150, and NPE-200 Overview
NPE-100, NPE-150, and NPE-200 Description and Overview
Figure 1-3 NPE-200
The NPE-100, NPE-150, and NPE-200 consist of the following components:
• Reduced instruction set computing (RISC) microprocessor
–
The NPE-100 and NPE-150 have an R4700 microprocessor that operates at an internal clock
speed of 150 MHz.
–
The NPE-200 has an R5000 microprocessor that operates at an internal clock speed of
200
MHz.
• System controller
The system controller provides hardware logic to interconnect the processor, DRAM, and the
PCI-based system backplane bus. The NPE-150 and NPE-200 have a system controller that uses
direct memory access (DMA) to transfer data between DRAM and packet SRAM on the network
processing engine.
1 System controller 7 Midplane connectors
2 R5000 microprocessor 8 Temperature sensor
3 4-MB SRAM (U6, U10, U13, U14, U28, U29,
U38, and U39)
9 Boot ROM U92
4 Captive installation screw 10 DRAM SIMMs
5 Handle 11 Bank 1
6 Temperature sensor 12 Bank 0
66420
U52
U42
U25
U11
N
ETW
OR
K
P
RO
CE
SSIN
G EN
G
IN
E-200
7
11
10
8
12
4 6
5
3
2
1
9