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Cisco 7206 Installation and Configuration Guide
OL-5102-02
Chapter 1 Product Overview
Field-Replaceable Units
Note To prevent DRAM errors in the NPE-100, NPE-150, or NPE-200, 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 may 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.
Table 1-3 lists the NPE-175 and NPE-225 memory specifications.
Table 1-2 Network Processing Engine Memory Specifications (NPE-100, NPE-150, and NPE-200)
Memory Type Size Quantity Description Location
DRAM 32 to
128 MB
2 to 4 16- or 32-MB SIMMs (based
on maximum DRAM
required)
Bank 0: U18 and U25 or
U11 and U25
1
Bank 1: U4 and U12 or
U42 and U52
2
1. The sockets for bank 0 on the NPE-100 and the NPE-150 are numbered U18 and U25. The same sockets on the NPE-200 are
numbered U11 and U25.
2. The sockets for bank 1 on the NPE-100 and the NPE-150 are numbered U4 and U12. The same sockets on the NPE-200 are
numbered U42 and U52.
SRAM
NPE-150 1 MB 8 8 chips, each being 128K
words x 9 bits wide
U700 through U703
U800 through U803
NPE-200 4 MB 8 8 chips, each being 512K
words x 8 bits wide
U6, U10, U13, U14, U28,
U29, U38, and U39
Boot ROM
3
NPE-200
3. ROM = read-only memory. The NPE-100 and NPE-150 use the boot ROM present on the I/O controller.
256 KB 1 EPROM for the ROM monitor
program
U92
Primary cache ——R4700 processor, internal
cache
R5000 processor, internal
cache
NPE-100,
NPE-150: U201
NPE-200: U44
Secondary
cache
512 KB 4 R4700, unified external cache NPE-100 and NPE-150:
U2, U10, U14, and
U26
R5000, unified external cache NPE-200:
U16, U9, U109, and
U107
Table 1-3 NPE-175 and NPE-225 Memory Specifications
Memory Type Size Quantity Description Location
1
SDRAM 64 or 128 MB 1 configurable bank
with 1 SDRAM slot
DIMM U15
Boot ROM 512 KB — One-time programmable
ROM
U1
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