Cisco 7206 - VXR Router Installation Manual page 30

Field-Replaceable Units
Table 1-2
Memory Type
DRAM
SRAM
NPE-150
NPE-200
Boot ROM
NPE-200
Primary cache
Secondary
cache
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.
3. ROM = read-only memory. The NPE-100 and NPE-150 use the boot ROM present on the I/O controller.
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
Table 1-3
Memory Type
SDRAM
Boot ROM
Cisco 7206 Installation and Configuration Guide
1-12
Network Processing Engine Memory Specifications (NPE-100, NPE-150, and NPE-200)
Size Quantity
32 to 2 to 4
128 MB
1 MB 8
4 MB 8
3
256 KB 1
— —
512 KB 4
lists the NPE-175 and NPE-225 memory specifications.
NPE-175 and NPE-225 Memory Specifications
Size
64 or 128 MB
512 KB
Description
16- or 32-MB SIMMs (based
on maximum DRAM
required)
8 chips, each being 128K
words x 9 bits wide
8 chips, each being 512K
words x 8 bits wide
EPROM for the ROM monitor
program
R4700 processor, internal
cache
R5000 processor, internal
cache
R4700, unified external cache NPE-100 and NPE-150:
R5000, unified external cache NPE-200:
Quantity Description
1 configurable bank DIMM
with 1 SDRAM slot
— One-time programmable
ROM
Chapter 1 Product Overview
Location
Bank 0: U18 and U25 or
1
U11 and U25
Bank 1: U4 and U12 or
2
U42 and U52
U700 through U703
U800 through U803
U6, U10, U13, U14, U28,
U29, U38, and U39
U92
NPE-100,
NPE-150: U201
NPE-200: U44
U2, U10, U14, and
U26
U16, U9, U109, and
U107
1
Location
U15
U1
OL-5102-02