
EZ-USB TRM v1.9
Table of Contents
i
EZ-USB
Technical Reference Manual
Table of Contents
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vii
Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Introducing EZ-USB ......................................................................1-1
1.1
Introduction .............................................................................................1-1
1.2
EZ-USB Block Diagrams .......................................................................1-2
1.3
The USB Specification ...........................................................................1-3
1.4
Tokens and PIDs .....................................................................................1-4
1.5
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
1.6
USB Direction .........................................................................................1-6
1.7
Frame ......................................................................................................1-6
1.7.1
Bulk Transfers ..........................................................................1-7
1.7.2
Interrupt Transfers ...................................................................1-7
1.8
EZ-USB Transfer Types .........................................................................1-7
1.8.1
Isochronous Transfers .............................................................1-8
1.8.2
Control Transfers .....................................................................1-8
1.9
Enumeration ............................................................................................1-9
1.10
The USB Core .......................................................................................1-10
1.11
EZ-USB Microprocessor ......................................................................1-11
1.12
ReNumeration‘ ......................................................................................1-12
1.13
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
1.14
Fast Transfer Modes .............................................................................1-14
1.15
Interrupts ...............................................................................................1-15
1