MCP2140-IP datasheet(45/58 Pages) MICROCHIP

45 / 58 page

 2003 Microchip Technology Inc.

Preliminary

DS21790A-page 45

MCP2140

APPENDIX A: REVISION HISTORY

Revision A

• This is a new data sheet

APPENDIX B: NETWORK

LAYERING

REFERENCE MODEL

Figure B-1 shows the ISO Network Layering Reference

Model. The shaded areas are implemented by the

MCP2140, while the cross-hatched area is imple-

mented by an infrared transceiver. The unshaded

areas should be implemented by the Host Controller.

FIGURE B-1:

ISO REFERENCE LAYER MODEL

OSI REFERENCE LAYERS

Application

Presentation

Session

Transport

Network

Data Link Layer

LLC (Logical Link Control)

Acceptance Filtering

Overload Notification

Recovery Management

MAC (Medium Access Control)

Data Encapsulation/Decapsulation

Frame Coding (stuffing, destuffing)

Medium Access Management

Error Detection

Error Signalling

Acknowledgment

Serialization/Deserialization

Physical Layer

PLS (Physical Signalling)

Bit Encoding/Decoding

Bit Timing

Synchronization

PMA (Physical Medium Attachment)

Driver/Receiver Characteristics

MDI (Medium Dependent Interface)

Connectors

Fault

confinement

(MAC-LME)

Bus Failure

management

(PLS-LME)

Supervisor

Regions implemented

by the MCP2140

Has to be implemented in Host

Controller firmware

Regions implemented

by the Optical Transceiver logic

(such as a PICmicro®

microcontroller)

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