Cisco Cable Interface Line Cards

Chapter 1 Cisco uBR7225VXR Overview

Hardware Component Descriptions

–Cisco uBR7200-NPE-G2—SDRAM: 1 GB (default) and 2 GB. There are two DRAM memory slots, so 1 GB of memory consists of two 512-MB memory SODIMMs, and 2 GB consists of two 1 GB memory SODIMMs. It is necessary to have the same size SODIMM in each memory bank on an NPE-G2. The type of DRAM memory being used on the NPE-G2 is double data-rate (DDR) memory. DDR memory provides high-performance memory access rates.

•Cache memory:

–Cisco uBR7200-NPE-G1—16-MB packet memory on 256-MB SDRAM, and 32-MB packet memory on 512-MB and 1-GB SDRAM.

–Cisco uBR7200-NPE-G2—32-MB packet memory on 512-MB and 1-GB SDRAM.

•Two environmental sensors for monitoring the cooling air as it leaves the chassis.

•Boot ROM for storing sufficient code for booting the Cisco IOS software.

For memory replacement instructions, refer to the Memory Replacement Instructions for the Network Processing Engine or Network Services Engine and Input/Output Controller document at the following URL:

http://www.cisco.com/en/US/docs/routers/7200/install_and_upgrade/npe-nse_memory_install/memory

.html

Cisco cable interface line cards (also known as line cards), with internal IF-to-RF upconverters, serve as the RF interface between the cable headend and both DOCSIS-based cable modems and EuroDOCSIS-based cable modems and set-top boxes (STBs). Cisco cable interface line cards separate downstream output and upstream input cable interfaces on the Cisco uBR7225VXR router to enable downstream and upstream signal combining and splitting arrangements.

Cisco cable interface line cards can be used in both 6-MHz NTSC standard and 8-MHz PAL/SECAM channel environments.

The cable interface line cards connect directly to the universal broadband router’s midplane. Cable interface line cards installed in the Cisco uBR7225VXR router support OIR.

Caution To ensure the proper flow of cooling air across internal components, make sure that blank cable interface line card is installed in an unoccupied chassis slot. Also make sure that power supply filler plates are installed in unoccupied power supply bays.

For more information regarding specific cable interface line cards, refer to the Cisco uBR7200 Series Cable Interface Line Card Hardware Installation Guide. To view the document online, go to the following URL:

http://www.cisco.com/en/US/docs/interfaces_modules/cable/line_cards/installation/guide/mcxxfru.htm l

	Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
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