Cisco Systems 7500 Series manual Route Switch Processor RSP2

Chapter 1 Cisco 7500 Series Product Overview

Route Switch Processor Overview

Figure 1-20

MEMD

SRAM

MEMD

SRAM

Route Switch Processor (RSP2)

	DRAM
Bus connector	SIMMs

				CPU
	U33	U30		Bank 0
				ROM monitor
	U21			(boot ROM)
	U12	U18		NVRAM
				Bank 1
U1	U4
				122375
PC Card slots	Flash memory Auxiliary port		Console port
slot 0: bottom	SIMM holder
slot 1: top

The RSP2 contains the system CPU, the system software (in Flash memory), the system memory components, and two PC Card slots, formerly called Personal Computer Memory Card International Association (PCMCIA) slots, and it maintains and executes the management functions that control the system.

Although no monitoring of ±12V or temperature is done by the RSP2, a comparator device ensures that ±12V is maintained within the normal operating ranges, and three temperature sensors on the RSP2 send temperature information to the chassis interface (CI) card. The CI card reports all voltage and temperature readings, and these readings are available through standard software commands for environmental monitoring.

The RSP2 uses a software-controlled configuration register, so you do not have to remove the RSP2 to configure jumpers. There are no user-configurable jumpers on the RSP2.

The RSP2 contains the following components:

•R4600— Reduced Instruction Set Computing (RISC) processor, used for the CPU. The CPU runs at an external clock speed of 50 MHz and an internal clock speed of 100 MHz.

•Most of the memory components used by the system, including onboard Flash memory. (A bank of hardware [MAC-layer] addresses for the interface ports is contained in an NVRAM device on the backplane.)

•Air-temperature sensors for environmental monitoring. (All of the logic for the environmental monitoring functions is contained on the chassis interface card.)

In addition to the system software, the RSP2 contains and executes the following management functions that control the system:

•Sending and receiving routing protocol updates.

•Managing tables and caches.

•Monitoring interface and environmental status.

	Cisco 7500 Series Installation and Configuration Guide
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