Network Interface Unit Requirements Specification

Version 0.1
Opened: 7/28/95
Closed:

Document Owners:
Andrew Ritz
Vinh Lam

Index

  1. Unit Description
  2. Unit Requirements
  3. Possible Implementations
  4. Important Issues
  5. Technical Requirements
  6. Selectable Parameters

I) Unit Description

The Network Interface Unit's purpose is to provide a link between CamBot and a TCP/IP-based ("Internet") network. The primary data flow direction within the NIU is from the PEGBoard interface to the network media. Data must, however, also be transferred back and forth between the System Control Unit and the network media. The NIU will use Ethernet (including 10Base-T and the IEEE 802.3 Attachment Unit Interface (AUI)) as its primary media type. The NIU need not implement the full TCP/IP protocol suite, as functions such as RARP and TCP are not required for the NIU to fulfill its purpose. The NIU should also be designed to be easily incorporated into devices besides CamBot.

Back to Index

II) Unit Requirements

The Network Interface Unit shall perform the following functions:
Back to Index

III) Possible Implementations

NIU block diagram 1
Back to Index

IV) Important Issues

  1. Thru-Put:
    • Adequate thru-put for MPEG stream (10Mbit/s)
    • PEG buffer should not have to wait for data
    • RAM1 should be arbitrated so that it does not interfere with PegBoard
  2. Compatibility:
    • Maintain ISA compatibility
    • Realistic (transparent) TCP/IP
Back to Index

V) Technical Requirements

  1. Requirement 1
    • Maximum:
    • Minimum:
Back to Index

VI) Selectable Parameters

  1. Parameter 1
    • Parameter Size: some bits
    • Parameter Description: This parameter influences something
    • Parameter Default: Default value
Back to Index