Cisco 7200 VXR - Page 21

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Cisco 7200 VXR Installation and Configuration Guide
78-5469-03
Chapter 1 Cisco 7200 VXR 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 size
SIMMs.
Table 1-3 lists the NPE-100 and NPE-150 factory-installed DRAM configurations
and their product numbers, and Table 1-4 lists the lists the NPE-200
factory-installed DRAM configurations and their product numbers.
Boot ROM
4
NPE-200 256 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
1. Location on processing engine board. See Figure 1-5, Figure 1-6, and Figure 1-7.
2. 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.
3. 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.
4. ROM = read-only memory. The NPE-100 and NPE-150 use the boot ROM present on the I/O controller.
Table 1-2 NPE-100, NPE-150, and NPE-200 Memory Specifications (continued)
Memory Type Size Quantity Description Location
1