Browse Prior Art Database

Server Management Controller Memory Module Concept for Supporting Multiple Memory Technologies or Options

IP.com Disclosure Number: IPCOM000099069D
Publication Date: 2005-Mar-10
Document File: 4 page(s) / 431K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method that supports multiple memory technologies (e.g. SRAM, SDRAM, parallel and serial Flash, etc.) for server management controller memory options on a server motherboard. Benefits include a solution that reduces motherboard costs and real estate impacts.

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Server Management Controller Memory Module Concept for Supporting Multiple Memory Technologies or Options

Disclosed is a method that supports multiple memory technologies (e.g. SRAM, SDRAM, parallel and serial Flash, etc.) for server management controller memory options on a server motherboard. Benefits include a solution that reduces motherboard costs and real estate impacts.

Background

The ESB2 (

Enterprise

South

Bridge

) supports an expansion bus (EBUS) that provides an interface to external memory devices for ESB2 server management. This expansion bus is a shared bus that can support both Flash devices and RAM devices. The RAM device can be either an SRAM or SDRAM (but not both). The Flash can be serial Flash or parallel Flash.

Supporting all of these memory technologies and types (to meet customer needs for different market segments) can be very costly, consume precious motherboard real estate, and create complicated designs.

General Description

The disclosed method supports multiple memory technologies and types by using an add-in card or memory module concept, which involves routing the ESB2 expansion bus (and any other miscellaneous signals) to a motherboard connector (see Figures 1 and 2). With the EBUS routed to a common connector, different memory module add-in cards (supporting different combinations of memory types) can be designed as options for ESB2 server management memory configurations.

Two memory modules can support the majority of combinations between parallel Flash, SRAM & SDRAM:

1.      Flash + SDRAM (this board supports both Flash and SDRAM, Flash only, or SDRAM only)

2.      Flash + SRAM (this board supports both Flash and SRAM, Flash only, or SRAM only)

As a minimum configuration, the serial Flash can be installed on the motherboard to support value and sub-value server market segments without memory modules or add-in cards. This reduces motherboard costs and the real estate requirements for suppo...