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EZ-USB

Technical Reference Manual

Table of Contents

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i

Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

1

Introducing EZ-USB ......................................................................1-1

1.1

1.2

1.3

1.4

1.5

Introduction ............................................................................................. 1-1

EZ-USB Block Diagrams ....................................................................... 1-2

The USB Specification ........................................................................... 1-3

Tokens and PIDs ..................................................................................... 1-4

Host is Master ......................................................................................... 1-5

1.5.1

Receiving Data from the Host .................................................. 1-6

1.5.2

Sending Data to the Host ......................................................... 1-6

USB Direction ......................................................................................... 1-6

Frame ...................................................................................................... 1-6

1.7.1

Bulk Transfers .......................................................................... 1-7

1.7.2

Interrupt Transfers ................................................................... 1-7

EZ-USB Transfer Types ......................................................................... 1-7

1.8.1

Isochronous Transfers ............................................................. 1-8

1.8.2

Control Transfers ..................................................................... 1-8

Enumeration ............................................................................................ 1-9

The USB Core ....................................................................................... 1-10

EZ-USB Microprocessor ...................................................................... 1-11

ReNumeration‘ ...................................................................................... 1-12

EZ-USB Endpoints ............................................................................... 1-12

1.13.1 EZ-USB Bulk Endpoints ......................................................... 1-13

1.13.2 EZ-USB Control Endpoint Zero ............................................ 1-13

1.13.3 EZ-USB Interrupt Endpoints ................................................. 1-14

1.13.4 EZ-USB Isochronous Endpoints ............................................ 1-14

Fast Transfer Modes ............................................................................. 1-14

Interrupts ............................................................................................... 1-15

1.6

1.7

1.8

1.9

1.10

1.11

1.12

1.13

1.14

1.15

EZ-USB TRM v1.9

Table of Contents

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