Cisco Systems NPE-175 Midplane connectors Boot ROM Flash memory, Nvram, Sodimm 2 J4, Sodimm 1 J3

Chapter 5 NPE-G1 Overview

NPE-G1 Description and Overview

Components

Figure 5-1illustrates the NPE-G1 and its major components.

Figure 5-1 NPE-G1

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NETWORK PROCESSING ENGINE - G1

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ON

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66435

1	Midplane connectors	6	Boot ROM
2	Flash memory	7	NVRAM
3	Temperature sensor	8	SODIMM 2 (J4)
4	BCM1250 system	9	Temperature sensor
5	Keying post	10	SODIMM 1 (J3)

The NPE-G1 consists of the following components:

•BCM1250 system

–Microprocessor operates at an internal clock speed of 700 MHz.

–Hardware logic to interconnect the processor, double data rate synchronous dynamic random-access memory (DDR-SDRAM), lightning data transport (LDT) bus, the generic PCI bus, and three direct-interface Gigabit Ethernet interfaces.

•Cache memory

The NPE-G1 has two levels of cache: primary and secondary cache that are internal to the microprocessor with secondary unified cache for data and instruction.

•The NPE-G1 uses DDR-SDRAM for providing code, data, and packet storage.

•Two environmental sensors for monitoring the cooling air as it enters and leaves the chassis.

•Full-feature I/O controller functionality

Network Processing Engine and Network Services Engine Installation and Configuration

OL-4448-12 5-3