Atmel AT43DK325 User manual

AT43DK325 USB Controller Development
Kit for AT43USB325/6
...........................................................................................................................
User Guide Revision 1.0

AT43DK325 USB Controller Dev. Kit User Guide i
3430B–USB–3/04
Table of Contents
Section 1
Introduction...........................................................................................1-1
1.1 Features....................................................................................................1-1
1.2 Device Support .........................................................................................1-1
1.3 Documentation..........................................................................................1-2
1.4 Free Downloads........................................................................................1-2
Section 2
Getting Started......................................................................................2-1
2.1 Electrostatic Warning................................................................................2-1
2.2 Unpacking the System..............................................................................2-1
2.3 System Requirements...............................................................................2-1
2.4 Software Requirements.............................................................................2-1
2.5 Connecting the Hardware .........................................................................2-2
2.6 CD-ROM Contents....................................................................................2-2
2.6.1 USB Wizard Utility ..............................................................................2-3
2.6.2 Code Base Directory ..........................................................................2-4
2.6.3 Application Examples .........................................................................2-4
2.6.4 In - System Programming Tool...........................................................2-4
2.6.5 Binary Files for Uploading ..................................................................2-5
2.7 Checking the Hardware.............................................................................2-5
Section 3
Hardware Description ...........................................................................3-1
3.1 LEDs (D1 to D3)........................................................................................3-1
3.2 5x2 Header JP8 ........................................................................................3-1
3.3 DB25 Female Parallel Port Connector J6.................................................3-2
3.4 8-pin IC Socket U4....................................................................................3-2
3.5 Programmable Logic Device U6 ...............................................................3-2
3.6 4x2 Header General Purpose I/O PORT A/JP1........................................3-2
3.7 4x2 Header General Purpose I/O PORT B/JP2........................................3-2
3.8 4x2 Header General Purpose I/O PORT C/JP3........................................3-2
3.9 4x2 Header General Purpose I/O PORT D/JP4........................................3-2
3.10 4x2 Header General Purpose I/O PORT E/JP5........................................3-2
3.11 2x2 Header General Purpose I/O JP6 ......................................................3-2
3.12 Solid State Power Switch U3 ....................................................................3-3
3.13 Header GND TP1 and TP2.......................................................................3-3
3.14 2x2 Header JP9 ........................................................................................3-3
3.15 Header JH1...............................................................................................3-3
3.16 USB External Downstream Port J2, J3, J4, and J5 Connectors...............3-3
3.17 USB Upstream Port J1 Connector............................................................3-3

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ii AT43DK325 USB Controller Dev. Kit User Guide
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3.18 Programmable Microcontroller U2 ............................................................3-3
3.19 2x2 Header JP10 ......................................................................................3-3
3.20 Two-wire Serial EEPROM U5...................................................................3-3
Section 4
SEEPROM Loader................................................................................4-1
4.1 Setting Up the Board.................................................................................4-1
4.2 Loading Code............................................................................................4-1
Section 5
Technical Support.................................................................................5-1
Section 6
Appendix...............................................................................................6-1
6.1 AT43USB325 Bill of Materials (BOM).......................................................6-1
6.2 AT43DK325 Schematics...........................................................................6-3

AT43DK325 USB Controller Dev. Kit User Guide 1-1
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Section 1
Introduction
Congratulations on your purchase of the AT43DK325 USB Development Kit. The
AT43DK325 is a complete starter kit and development system for Atmel’s
AT43USB325x family of AVR®based USB microcontrollers (MCUs). It provides all of
the necessary hardware and firmware components to facilitate rapid prototyping and
firmware development of the AT43USB325x applications.
1.1 Features The AT43DK325 Development Kit consists of the following:
nDevelopment Board for the AT43USB325/6 USB MCUs featuring
– An AT43USB325 full-speed USB controller programmable as a compound
device, a hub only device or a function only device
– One internal and four external downstream HUB ports
– 512 bytes on-chip program SRAM
– 16 Kbytes program memory
– Parallel interface to PC for In-System firmware programming
– Pin header connectors for access to all available GPIO pins
nHardware design files (schematics and PCB layout)
nUSB 2.0 compliant USB firmware library
nUSB Wizard firmware source code generation utility
nIn-System Programming tool
nComplete user's guide
1.2 Device Support The AT43DK325 Development Kit and the accompanying software tools are intended to
support firmware development and prototyping for the AT43USB325/6 family of USB
keyboard function controllers, including the
– AT43USB325E/M
– AT43USB326
Binary compatibility across the AT43USB325/6 family ensures that only one set of
development tools (development kit, compilers, etc.) is needed for all of the
AT43USB3xx based applications. Firmware written for one member of the family can be

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re-used for another member without modification as long as only features available on
both parts are used.
1.3 Documentation The AT43DK325 Development Kit is accompanied by the following two documents:
– AT43DK325 User's Guide
– USB Wizard User Guide
Atmel recommends its customers to read the AT43DK325 User's Guide prior to reading
the USB Wizard User Guide.
1.4 Free Downloads The latest version of the USB Wizard can be found in the USB section of the Atmel web
site at http://www.atmel.com. Please refer to the same section for up-to-date informa-
tion on new USB product announcements, software releases and tool upgrades.

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Section 2
Getting Started
2.1 Electrostatic
Warning The AT43DK325 Development Board is shipped in protective anti-static packaging. The
board must not be subjected to high electrostatic potentials. A grounding strap or similar
protective device should be worn when handling the board. Avoid touching the compo-
nent pins or any other metallic elements.
2.2 Unpacking the
System The AT43DK325 Development Kit is supplied with the following:
– AT43DK325 Development Board
– 2-meter Fully Rated USB Cable
– Male-male DB25 Parallel Cable
– Atmel USB CD-ROM with Software and Documentation
Please contact your local Atmel distribution or E-mail [e-mail] if any of the
aforementioned items is missing from the package.
2.3 System
Requirements The minimum hardware and software requirements are:
– 486 processor (Pentium®is recommended)
– 128 MB RAM
– 10 MB free hard disk space
– Windows®98/2000/ME/XP
– Parallel printer port
2.4 Software
Requirements The following third party softwares are needed to access and modify the documents and
source code in the CD-ROM:
–OrCAD Capture®from www.orcad.com for the .dsn file
–IAR or GNU C Compiler for the sample C source code
–Microsoft®Word from www.microsoft.com for the .doc files
–Acrobat®Reader®from www.adobe.com for the .pdf files
–Winzip®from www.winzip.com to open the .zip files

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2.5 Connecting the
Hardware Atmel has taken great care in creating a reliable demonstration kit for its customers. The
AT43DK325 Development Board is USB bus powered and requires no external power
supplies. In order to ensure proper operation, the supplied components in the kit must
be used in the setup shown in Figure 2-1. Atmel does NOT recommend substitution of
these components.
Connect the AT43DK325 Development Board as follows:
1. Verify that Jumper JP9 is closed.
2. Connect the USB cable from J1 Series B USB receptacle on the Development
Board to the USB Series A receptacle on the PC.
3. Connect the DB25 parallel cable from J6 on the Development Board to the paral-
lel port on the PC.
Figure 2-1. Connection to the AT43DK325
2.6 CD-ROM
Contents The CD-ROM has a top directory \325_evx\ where xindicates the version of the firm-
ware. All the directory paths used in this User Guide fall under this top directory. There
are three major subdirectories:
–BOARD: hardware design documentation
–Docs:datasheets, tutorial, and user’s guide
–USBWizard:USB Wizard software tool and examples
USB Cable
DB25 Parallel Cable
J6
AT43DK325 Development Board
Target USB
Device
J2 J1J3 J4 J5
Target USB
Device Target USB
Device Target USB
Device

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2.6.1 USB Wizard Utility USB Wizard is a GUI based development tool that facilitates rapid USB application
development for the AT43USBxxx family of AVR USB controllers. It allows the user to
generate firmware templates in ANSI C for USB and AVR peripherals with few clicks of
the mouse.
The utility is located in \USBWizard\USBWizard directory. This directory contains the
USB Wizard executable and other dependencies files.
Please refer to the Readme file on the release CD for installing instructions. The USB
Wizard executable file is supported on Windows®98/2000/ME/XP.
Source code generated by the USB Wizard cannot be programmed directly into the on-
board SEEPROM device. It must be compiled and linked first. The USB Wizard currently
supports IAR and GCC compilers.
Refer to the Atmel “USB Wizard User Guide” and “USB Wizard: Application Examples
and Demos” for detailed descriptions of this utility.
Figure 2-2. USB Wizard Application Window

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2.6.2 Code Base Directory This is the directory where the code base needed by USB Wizard is located. The name
of this directory is \USBWizard\Codebase. There are two main groups of code base
within this directory. The first one is IARbase, which provides necessary code for IAR.
The second one is GCCbase which contains the code for the GCC compiler. The follow-
ing is a brief summary of the directory tree of this code base.
Code base
|
|------------ IARbase
||
| |------ AT43USB35x
| |------ AT43USB326
| |------ AT43USB325E
|
|------------ GCCbase
|
|------ AT43USB35x
|------ AT43USB326
|------ AT43USB325E
2.6.3 Application
Examples The application examples are also included within this package. They are located in the \USBWizard\Examples\ directory. This directory contains USB Wizard configuration files
(*.usw files) and the corresponding C files for the application examples. There are five
subdirectories in this directory:
1. Hub_Disabled
2. OCR1A
3. OCR1B
4. PWM_ADC_GPIO
5. SPI
2.6.4 In - System
Programming Tool The SEEPROM Loader allows developers to program the SEEPROM device through the standard parallel port. The tool is located in the \USBWizard\ISP\ directory.
Please refer to the Readme file for installation instructions.
Please read Section 4 of this document or Section 3 of Atmel’s “USB Wizard: Applica-
tion Examples and Demos” on how to use this utility.

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Figure 2-3. SEEPROM Loader Tool Window
2.6.5 Binary Files for
Uploading The ready-made programmable binary files for loading are located on the CD-ROM in the \USBWizard\Binary\ directory. The files have extension *.hex. They are located
under three subdirectories:
1. OCR1A
2. OCR1B
3. PWM_ADC_GPIO
2.7 Checking the
Hardware The Development Board comes with a preprogrammed application. Connect the USB
Upstream port of the Development Board to the downstream port of the Host (i.e.: PC).
Then, check its existence in the Device Manager of the System Control Panel win-
dow. If the Development Board is working properly, it should show up in the PC as a HID
compliant device.
Another way to check the proper functioning of the board is to connect a USB device
such as a mouse to one of the downstream USB hub ports on the Development Board.
The Development Board is functioning properly if the mouse is detected by the PC.

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AT43DK325 USB Controller Dev. Kit User Guide 3-1
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Section 3
Hardware Description
The following hardware description explains the Development Board in detail. The
Development Board schematic can be found in Section 6.2 on page 6-3.
Figure 3-1. Simple Block Diagram of the DK325 Board
3.1 LEDs (D1 to D3) The AT43DK325 Development Kit includes 3 green LEDs. The anode pin of each LED
is connected to the VBUS.
3.2 5x2 Header JP8 Pins 2, 4, and 6 of this jumper are connected to the cathode pin of each LED. To turn on
the LEDs, JP8 should be pulled low and pins 2, 4, and 6 must be connected to pins 1, 3

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and 5 with jumpers. On keyboard applications, LEDs can be used to identify Scroll,
Caps, and Num.
3.3 DB25 Female
Parallel Port
Connector J6
This parallel port connector is used to download the firmware from the PC to the
SEEPROM in socket U4. Further explanations on setting up the board for downloading
the firmware to the SEEPROM is available in “USB Wizard: Application Examples and
Demos” for the AT43USB325 and Demos documentation.
3.4 8-pin IC Socket
U4 The SEEPROM device is plugged into this 8-pin socket. This board is supplied with an
Atmel SEEPROM.
3.5 Programmable
Logic Device U6 This Development Board uses an ATF16V8CZ Electrical Erasable PLD (EE PLD). This
device controls the data flow to and from the SEEPROM during firmware downloading
and during the booting process upon power-up or reset.
3.6 4x2 Header
General Purpose
I/O PORT A/JP1
This header provides external access to PORT A of the AT43USB325. Each pin header,
labelled “0” - “7”, corresponds to the PORT A pin of the same number.
3.7 4x2 Header
General Purpose
I/O PORT B/JP2
This header provides external access to PORT B of the AT43USB325. Each pin header,
labelled “0” - “7”, corresponds to the PORT B pin of the same number.
3.8 4x2 Header
General Purpose
I/O PORT C/JP3
This header provides external access to PORT C of the AT43USB325. Each pin header,
labelled “0” - “7”, corresponds to the PORT C pin of the same number.
3.9 4x2 Header
General Purpose
I/O PORT D/JP4
This header provides external access to PORT D of the AT43USB325. Each pin header,
labelled “0” - “7”, corresponds to the PORT D pin of the same number.
3.10 4x2 Header
General Purpose
I/O PORT E/JP5
This header provides external access to PORT E of the AT43USB325. Each pin header,
labelled “0” - “7”, corresponds to the PORT E pin of the same number.
3.11 2x2 Header
General Purpose
I/O JP6
External access to PORT F is available at this header. In the 43USB325E, Port F only
has 4 pins marked as PF0 to PF3. These pins are used to download firmware from the
SEEPROM to the internal SRAM upon reset or power-up. Once firmware is down-
loaded, PF0 will remain high while PF1-PF3 will be available as general purpose I/Os.

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PF3 also has an alternate function as an input capture pin for a Timer/Counter1 feature.
Note that PF0 is not available for general purpose I/O.
3.12 Solid State
Power Switch U3 This switch is used to support ganged power switching. This board uses Micrel
MIC2026-2BM.
3.13 Header GND TP1
and TP2 This pin provides ground voltage reference.
3.14 2x2 Header JP9 The Development Board supports ganged power switching to the available USB ports
using a Micrel MIC2026-2BM solid state power switch. The PDX0 and PDX1 must be
connected to this switch by installing a jumper to this header. By default, two jumpers
are installed at this header. If the system is not used, PDX0 and PDX1 are available as
general purpose I/Os.
3.15 Header JH1 This pin is also used as an input capture pin for the Timer/Counter1 feature.
3.16 USB External
DownstreamPort
J2, J3, J4, and J5
Connectors
These connectors provide downstream connection to USB devices. There are 5 down-
stream ports. Port 1 is permanently used by the embedded function and is not visible.
On this board, J2, J3, J4 and J5 correspond to embedded USB hub ports 5, 4, 3 and 2
respectively. The power source of these ports is controlled by power switch U3.
3.17 USB Upstream
Port J1
Connector
This connector provides upstream connection to the host or to another hub.
3.18 Programmable
Microcontroller
U2
This board comes with the AT43USB325E microcontroller.
3.19 2x2 Header JP10 Pin 1 on this header is connected to both VSS1 and VSS2 of U2 (microcontroller), while
pin 2 and pin 4 are connected to the TEST and SYSCLK pins of U2 respectively. No
connection to pin 3 of this header.
3.20 Two-wire Serial
EEPROM U5 This board includes a two-wire Serial EEPROM for extra memory. The device plugged
into this socket is the AT24C02A. Please refer to the ATC024A datasheet for more infor-
mation about this device.

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AT43DK325 USB Controller Dev. Kit User Guide 4-1
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Section 4
SEEPROM Loader
SEEPROM Loader is an Atmel software tool used to program the SEEPROM via
generic parallel ports. This section describes the tool briefly.
4.1 Setting Up the
Board Before starting the In-System Programming, please verify the following configurations:
1. The SEEPROM is properly plugged into U4.
2. No jumpers are installed on JP6.
3. The upstream USB port is connected to the PC. This connection is needed for
board’s power source.
4. J6 connector is connected to the parallel port on the PC.
4.2 Loading Code After setting up the board, the next step is to download the firmware. This development
kit comes with application firmware that has been properly formatted for the SEEPROM.
The files are located in the subdirectories under the directory \USBWizard\Binary\.
Those files can be written into the EEPROM as follows:
1. Open SEEPROM Loader.exe. It is located in the \USBWizard\ISP\ directory on
the CD-ROM.
Figure 4-1. SEEPROM Loader Application

SEEPROM Loader
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The following error message may appear in a pop-up window indicating that an extra
DLL file needs to be downloaded and installed.
Figure 4-2. Error Message of Running SEEPROM_Loader.exek
The SEEPROM loader uses the DriverLINXT parallel port driver DLPortIO.DLL which
provides the Win32 DLL hardware I/O functions. Window®NT®and 2000 users also
require the DLPortIO.SYS kernel mode driver. Both of these drivers are copyrighted by
Scientific Software Tools, Inc. (www.driverlinx.com). To download the drivers, perform
the following steps:
1. Go to http://www.driverlinx.com/DownLoad/dnload.htm
2. Click on Windows 95/NT Port I/O Driver
3. Download the .exe file.
2. Before selecting the memory, click on Reset to bring the device to the Active
reset state. Then select the memory from Memory Choice: list box.
Figure 4-3. Selecting Memory Flash
3. Click on Write Flash button. Figure 4-4 will appear.
Figure 4-4. Selecting the File

SEEPROM Loader
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4. Locate the *.hex file to be downloaded, and then click Open to start download-
ing. If successful, a message box will be displayed stating that the download was
a success. Select only one of the *.hex files located in the subdirectories under
\USBWizard\Binary\ directory.
5. Once a successful download is complete, a message box will appear, as shown
in Figure 4-5.
6. Click OK to close the message box.
7. Disconnect the DB25 parallel cable from the J6 connector, then disconnect and
reconnect the board’s USB upstream port to reset the evaluation board.
Another way to reset the board is to click on the Reset to make the board stay in
a Non-active reset state. And then, disconnect and reconnect the board’s USB
upstream port.
Figure 4-5. A Successful Download
8. Clicking Exit terminates the application.

SEEPROM Loader
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