Datasheet

2-20

Memory Replacement Instructions for the Network Processing Engine or Network Services Engine and Input/Output Controller

OL-8358-03

Chapter 2 SDRAM and DRAM Memory Systems Overview

Network Processing Engine or Network Services Engine Memory Information

NPE-100 Memory Information

Note To prevent DRAM errors in the NPE-100, and to ensure that your system initializes correctly at startup,

DRAM bank 0 (socket U18 and U25, or U11 and U25) must contain no fewer than two SIMMs of the

same type. You can also install two SIMMs of the same type in bank 1 (socket U4 and U12, or U42 and

U52); however, bank 0 must always contain the two largest SIMMs.

Use the following figure and tables for information about the NPE-100 memory location, specifications,

and configurations.

Table 2-18 NPE-150 Processor and Memory Specifications

Processor Memory Type Size Quantity Description Component Location on

the NPE-150 Board

R4700 1 R4700 150-MHz RISC

1. RISC = reduced instruction set computing

U201

DRAM

(Main

memory)

2. DRAM = dynamic random-access memory

32 to 128

2 to 4 16- or 32-MB SIMMs (based on

maximum DRAM required)

Bank 0: U18 and U25

Bank 1: U4 and U12

SRAM

3. SRAM = static random-access memory

1 MB 8 8 chips, each being 128 KB x 9 bits wide U700 through U703

U800 through U803

Primary cache — — R4700 internal cache U201

Secondary

cache

512 KB 4 R4700 unified, external cache U2, U10, U14, and U26

Table 2-19 NPE-150 DRAM Configurable Memory

Total DRAM

1. Refer to the Cisco AS5800 Universal Access Server documentation listed on Cisco.co m for Cisco AS5800 Universal Access Server DRAM options.

DRAM Bank 0 Quantity - Bank 0 DRAM Bank 1 Quantity - Bank 1 Product Number

2. These products are also available as DRAM upgrades. For example, to upgrade a network processing engine from 32 MB to 64 MB of DRAM, order

Product Number MEM-NPE-64MB=.

32 MB U18 and U25 2 16-MB SIMMs U4 and U12 — MEM-NPE-32MB

64 MB U18 and U25 2 32-MB SIMMs U4 and U12 — MEM-NPE-64MB

128 MB U18 and U25 2 32-MB SIMMs U4 and U12 2 32-MB SIMMs MEM-NPE-128MB