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3-3
Network Processing Engine and Network Services Engine Installation and Configuration
OL-4448-12
Chapter 3 NPE-300 and NPE-400 Overview
NPE-300 and NPE-400 Description and Overview
Figure 3-2 NPE-400
The network processing engines consist of the following components:
• Reduced instruction set computing (RISC) microprocessor
–
The NPE-300 uses an RM7000 microprocessor that operates at an internal clock speed of
262
MHz.
–
The NPE-400 uses an RM7000 microprocessor that operates at an internal clock speed of
350
MHz.
• System controller
The system controller provides hardware logic to interconnect the processor, DRAM, and the
PCI-based system backplane bus.
–
The NPE-300 has two system controllers that provide processor access to the midplane and
single I/O controller PCI buses. The system controllers also allow port adapters access to
SDRAM using any of the three PCI buses.
–
The NPE-400 has a single system controller that provides system access.
1 Temperature sensor (U31) 7 Midplane connectors
2 Keying post 8 Boot ROM (U7)
3 RM7000 microprocessor 9 Temperature sensor (U6)
4 System controller 10 SODIMM (J1)
5 Captive installation screw 11 Standoff and screw
6 Handle
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