Datasheet

2-16
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-200 Memory Information
Note To prevent DRAM errors in the NPE-200and 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-200 memory location, specifications,
and configurations.
Primary cache 16 KB (instruction),
16 KB (data)
— R5270 processor internal
cache
U4
32 KB (instruction),
32 KB (data)
— R5271 processor internal
cache
U4
Secondary
cache
2 MB 4 chips, each
512 KB by 8
bits wide
R527x processor unified,
external cache
U5, U6, U7, U8
4
1. RISC = reduced instruction set computing
2. 256 MB supported on the NPE-225 processor only
3. OTP = one time programmable
4. Located on the processor engine board
Table 2-14 NPE-225 SDRAM Configurable Memory
Total SDRAM SDRAM Bank Quantity Product Number
64 MB
1
1. The 64-MB memory configuration is not supported on the NPE-225 on a Cisco uBR7200 series router, which requires a
minimum of 128 MB memory. The 64-MB memory configuration is supported on the Cisco 7200 series routers, but 128 MB
is the minimum recommended memory configuration.
U15 1 64-MB DIMM MEM-SD-NPE-64MB
128 MB U15 1 128-MB DIMM MEM-SD-NPE-128MB
256 MB U15 1 256-MB DIMM MEM-SD-NSE-256MB
Table 2-15 NPE-175 SDRAM Configurable Memory
Total SDRAM SDRAM Bank Quantity Product Number
64 MB U15 1 64-MB DIMM MEM-SD-NPE-64MB
128 MB U15 1 128-MB DIMM MEM-SD-NPE-128MB
Table 2-13 NPE-225 and NPE-175 Processor and Memory Specifications (continued)
Processor Memory Type Size Quantity Description Component Location
on the NPE-175 and
NPE-225 Board