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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-2 00
The NPE-100, NPE-150, and NPE-200 consist of the following components:
• Reduced instruction set computing (RISC) microprocessor
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The NPE-100 and NPE-150 have an R4700 microprocessor that operates at an internal clock
speed of 150 MHz.
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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.
1System controller 7Midplane connectors
2R5000 microprocessor 8Temperature sensor
34-MB SRAM (U6, U10, U13, U14, U28, U29,
U38, and U39)
9Boot ROM U92
4Captive installation screw 10 DRAM SIMMs
5Handle 11 Bank 1
6Temperature sensor 12 Bank 0
66420
U52
U42
U25
U11
NETWORK PROCESSING ENGINE-200
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11
10
8
12
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5
3
2
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