Specifications

Memory Replacement Instructions for the Network Processing Engine and Input/Output Controller 9
Memory Systems Overview
Table 4 Network Processing Engine (NPE-175 and NPE-225) Processor and Memory
Specifications
Boot ROM
6
(NPE-200 only)
256 KB Socket U92
1 RISC = reduced instruction set computing.
2 DRAM = dynamic random-access memory.
3 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.
4 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.
5 SRAM = static random-access memory.
6 Present on the I/O controller and the NPE-200.
Description Specification Location
Processor NPE-175
200-MHz RM5270 RISC
NPE-225
262-MHz RM5271 RISC
Socket U4
Socket U4
Memory (SDRAM) 64 to 128 MB
NPE-175 and NPE-225 have 1 bank
with 1 SDRAM slot
NPE-175 and NPE-225
U15
Boot ROM 512 KB NPE-175 and NPE-225
Socket U1
Primary cache 32 KB (instruction), 32 KB (data) External to processor
Secondary cache 2 MB External to processor
Table 5 Network Processing Engine (NPE-300) Processor And Memory
Specifications
Description Specification Location
Processor NPE-300
262-MHz RM7000 RISC Socket U49
Memory (SDRAM) 32 to 128 MB
NPE-300 has 1 configurable
1
bank
with 2 SDRAM slots
1 In the NPE-300, bank 0 is used exclusively for packet memory and is not user configurable.
NPE-300
Bank 1: U45 and U44
2
2 In the NPE-300, bank 1 contains the Cisco IOS software, processor memory, and packet memory.
Boot ROM 512 KB NPE-300
Socket U1
Primary cache 16 KB (instruction), 16 KB (data) Internal to processor
Secondary cache 256 KB Internal to processor
Integrated cache 2 MB
Table 3 Network Processing Engine (NPE-100, NPE-150, NPE-200) Processor and
Memory Specifications (continued)
Description Specification Location