Freescale Semiconductor TWR-MCF52259-Ethenet How Data is Transferred in USB

The General USB Process

How Data is Transferred in USB

Frame

Transfer 1

Transaction

Start of Frame

Transfer 2

Transaction 1

Packet 1

Packet 2

Packet 3

Transaction 2

Packet 1

Packet 2

Packet 3

Transaction 3

Packet 1

Packet 2

Packet 3

Transfer 3

Transaction 1

Packet 1

Packet 2

Packet 3

1500 bytes / 1 Ms

USB is a token-based (packet) standard. Data is transferred

between the host and the device in a series of frames, transfers,

transactions, and packets within1 Ms/1500 byte frames.

Software – General Concepts

Contents

Main Ethernet Overview Session Ethernet Overview Session What is Ethernet? Why do we care about Ethernet? How will I use Ethernet? Ethernet Page Page Ethernet Overview Physical Session Connectors Cables Ethernet Cable: Straight Through Pinout The following table demonstrates the proper color scheme. Ethernet Cable: Crossover Pinout * Distance Signal Travels at 100 Mbits? Requires using external PHY Supported by MCF5223x Full Duplex Ethernet Links Full DuplexHalf Duplex Basic Ethernet Network Hub Page Page Page Switch Ethernet Router/Gateway Note: Ethernet to WiFi is a router functionality. *Media Independent Interface (MII) *Autonegotiation The Ethernet Data Packet Format Ethernet Data Frame old/original format used IEEE 802.3 Data Frame Terminology Ethernet Definition More Ethernet References Web sites: http://www.tcpipguide.com/ References: IP IP Classes IP Subnetting IPv4 network classes NAT Default Gateway Getting packets into a NAT network TCP is One of the Protocols in the Internet Protocol Suite TCP - Transport Control Protocol Other Protocols in the Internet Protocol Suite The OSI 7 Layer Model TCP/IP Four Layers Equivalent: All People Seems To Need Data Processing. Some Interesting RFCs Page ColdFire MCU Roadmap 2009 Flash 32KB 64KB 128KB 256KB 512KB 1MB Cold ColdFire Cold ColdFire Fire V2 Core Page Page MCF522xx Ethernet Media Access Controller (MAC) MCF5223x - ePHY MCF51CN MCF51CN www.freescale.com/mqx MQX Software Complete Ethernet Solution Freescale MQX MCF51CN128 Fire ColdFire 68K/Cold 68K/ Freescale Complimentary Software Solution Freescale Complete Solution MCF5225x Microcontroller Core Services MQX RTOS BSP/PSP CAN RTCS Real-time TCP/IP Communications Suite Protocols Freescale MQX Software Solutions . Full- Featured and Powerful What is Freescale MQX? Freescale owns Coldfire TCP/IP Stack Features Page Page Page Page Page Page Page Page Page Page Page Page Flashing and booting the board Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page This module contains K2u/USB Workshops-on-Demand Series Module Agenda Page In This Section: Motivation for USB Page History and Evolution Current USB Speeds and Limitations Spec NotesApplicationsData Rate and Performance History and Evolution Topology USB Spec Provides for a Flexible Tiered Star Topology Topology A-connector (upstream) B-connector (downstream) USB Standard Connectors Page Page How Data is Transferred in USB Frame 1500 bytes / 1 Ms Start of Frame Transfer 1 Page Page Page Page Page Page Page Page Page Page Page How Does the Host Know a Devices Requirements? Page Page Host Page Page Page Frames in More Detail Packets in More Detail Packets Associated with Each Type of Transfer Phases (Packets)Stages (Transactions)Transfer Type USB Signaling USB uses Non-Return to Zero, Inverted signaling Page API Calls: What happens after enumeration? Commonly used API calls for host devices: Page Page Page Page CMX Product Offering -Complimentary Software Complimentary SW for the MCF522xx Family of Microcontrollers: Advanced Topics CMX Product Offering -UpsellSoftware Page Page Page What Applications would use it? How does it work? Initial declaration SRP (Session Request Protocol) Negotiations : Negotiation process HNP (Host Negotiation Protocol): Page Page Page The USB Controller Continuum. Only from Freescale. ColdFire V1 ColdFire V2 RS08 S08 ColdFire V3 ColdFire V4 8-bit 32-bit Page Page Page Page Page Page LAB1 HID ( Human interface device) Page Page Page Page Page Page Page Page Page Page LAB2-CDC Page Page Page Page Page Page Page Page LAB3 MSD(HOST)