Cisco Technology, Inc.

Sanjoy Dey

Ming Chi Chen

Mick Henniger

Ramesh Srinivasan

Robert Chen

James Everett Grishaw

Kelvin Shih-Tai Liu

Severin Baer

Smita Kiran Rane

The development port or Debug port of a microprocessor on an intelligent daughterboard is used for downloading code or configuration information from a motherboard for use in boot-up. In various aspects, the code or configuration information can include information used for configuring a port, other than the development port, and/or for configuring a memory controller, such as for a daughterboard DRAM. Use of the Debug port makes it possible to reduce or eliminate the need for storing boot-up code or configuration information on a daughterboard ROM, or other non-volatile memory, thus reducing cost and space requirements, power consumption and the like.

Method and apparatus for using a development port for boot up

A method and apparatus for implementing host management of an intelligent daughtercard utilizes a high-speed serial link and a defined plurality of serial protocol commands to provide high bandwidth control path for management of daughtercard memory and application specific initialization and/or configuration changes.

Serial protocol for efficient messaging between host and intelligent daughtercards over a serial link

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Fremont, CA, United States of America

Sanjoy Dey