5_BlackfinLwIP1_0Release

5_BlackfinLwIP1_0Release - Light-Weight IP (LwIP) Support...

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Support Across The Board Light-Weight IP (LwIP)
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Copyright © Avnet, Inc., Analog Devices, Inc. All rights reserved. CONFIDENTIAL LwIP Module Outline A brief primer on TCP/IP and the BF536/7 EMAC What is LwIP? How to use LwIP in VisualDSP++ and VDK configuration How to trace and improve performance Summary
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Copyright © Avnet, Inc., Analog Devices, Inc. All rights reserved. CONFIDENTIAL A Brief Primer on the OSI, TCP/IP and BF537 EMAC Application Protocol TCP/IP Stack EMAC Device Driver BF536/7 EMAC PHY Transceiver Web Server, Ogg Vorbis, Contiki, Theora etc. HTTP, FTP, Telnet etc. lwIP, 3 rd Party EMAC core is provided SMSC LAN83C185, Realtek RTL8201, etc. Layer 7 (Application) Layers 3, 4, 5 and 6 (Network, Transport, Layer 2 (Data Link) Layer 1 (Physical)
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Copyright © Avnet, Inc., Analog Devices, Inc. All rights reserved. CONFIDENTIAL TCP/IP Stack H eader Structure header structure -------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------- MAC Header IP Header TCP/UDP-Header DATA Traile r data link layer IP Header TCP/UDP-Header DATA network layer DATA TCP-Header DATA transport layer respectively DATA application layer UDP-Header TCP/IP Stack supports the transport and network layer Application runs on top of the TCP/IP Stack ADSP-BF536/7 Ethernet MAC peripheral supports the data link layer Data Encapsulation
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Copyright © Avnet, Inc., Analog Devices, Inc. All rights reserved. CONFIDENTIAL Layer 1 - Physical Consists of the physical and electrical interface to the network: PHY Transceiver, 10BASE-T connector, 100BASE-TX, switches, and routers PHY transceiver performs electrical signal conditioning for transmission over the medium: RJ45 cable 4-wire MII and 2-wire RMII Management Interface allows layer 2 devices such as the BF536/7 EMAC to monitor and control PHY operation.
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Copyright © Avnet, Inc., Analog Devices, Inc. All rights reserved. CONFIDENTIAL Blackfin Ethernet System Overview ERxD[3:0] ERxDV ERxCLK ERxER MDIO MDC YINT ETxD[3:0] ETxEN COL CRS ETxCLK Magnetics TPO+ TPO- TPI+ TPI- RJ45 ADSP-BF537 PHY 25MHz MII MDI
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Copyright © Avnet, Inc., Analog Devices, Inc. All rights reserved. CONFIDENTIAL
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This note was uploaded on 02/10/2012 for the course ECE 3551 taught by Professor Staff during the Spring '11 term at FIT.

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5_BlackfinLwIP1_0Release - Light-Weight IP (LwIP) Support...

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