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The EZ-USB Technical Reference Manual
Copyright 2000, Cypress Semiconductor
Corporation.
All rights reserved.
Development Kit -- Getting Started
Documentation for the EZ-USBTM XceleratorTM Development it. Includes an
overview of the kit, descriptions of kit components with installation instruc-
tions, and details about the development board.
Technical Reference
Documentation of the EZ-USB controller. Includes details about the CPU,
memory, input/output, ReNumerationTM, bulk transfers, endpoint zero, iso-
chronous transfers, interrupts, resets, power management, registers, AC/
DC parameters, and packages.
Appendices
Documentation for the 8051 enhanced core. Includes an introduction, an
architectural overview, and a hardware description.
Registers
EZ-USB register maps.
Technical Support:
Phone: (858) 613-7929
E-mail: usbapps@cypress.com
Website:
www.cypress.com
EZ-USB
Technical Reference Manual
Version 1.9
May 2000
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
1
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
ii
Table of Contents
EZ-USB TRM v1.9
1.16
Reset and Power Management .............................................................. 1-15
1.17
EZ-USB Product Family ....................................................................... 1-16
1.18
Summary of AN2122, AN2126 Features ............................................. 1-16
1.19
Revision ID ........................................................................................... 1-17
1.20
Pin Descriptions .................................................................................... 1-18
2
EZ-USB CPU .................................................................................. 2-1
2.1
Introduction ............................................................................................. 2-1
2.2
8051 Enhancements ................................................................................ 2-1
2.3
EZ-USB Enhancements .......................................................................... 2-2
2.4
EZ-USB Register Interface ..................................................................... 2-2
2.5
EZ-USB Internal RAM ........................................................................... 2-3
2.6
I/O Ports .................................................................................................. 2-3
2.7
Interrupts ................................................................................................. 2-4
2.8
Power Control ......................................................................................... 2-5
2.9
SFRs ........................................................................................................ 2-6
2.10
Internal Bus ............................................................................................. 2-7
2.11
Reset ........................................................................................................ 2-7
3
EZ-USB Memory ............................................................................ 3-1
3.1
Introduction ............................................................................................. 3-1
3.2
8051 Memory .......................................................................................... 3-2
3.3
Expanding EZ-USB Memory ................................................................. 3-4
3.4
CS# and OE# Signals .............................................................................. 3-5
3.5
EZ-USB ROM Versions ......................................................................... 3-7
4
EZ-USB Input/Output ................................................................... 4-1
4.1
Introduction ............................................................................................. 4-1
4.2
IO Ports ................................................................................................... 4-2
4.3
IO Port Registers ..................................................................................... 4-5
4.4
I2C Controller ......................................................................................... 4-6
4.5
8051 I2C Controller ................................................................................ 4-6
4.5.1
START ...................................................................................... 4-8
4.5.2
STOP ........................................................................................ 4-8
4.6
Control Bits ............................................................................................. 4-8
4.6.1
LASTRD ................................................................................... 4-9
4.6.2
DONE ....................................................................................... 4-9
4.6.3
ACK .......................................................................................... 4-9
4.7
Status Bits ............................................................................................... 4-9
4.7.1
BERR ...................................................................................... 4-10
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