Atmel Corporation
2325 Orchard Parkway
San Jose, CA 95131, USA
Tel: 1(408) 441-0311
Fax: 1(408) 487-2600
Regional Headquarters
Europe
Atmel Sarl
Route des Arsenaux 41
Case Postale 80
CH-1705 Fribourg
Switzerland
Tel: (41) 26-426-5555
Fax: (41) 26-426-5500
Asia
Room 1219
Chinachem Golden Plaza
77 Mody Road
Tsimshatsui
East Kowloon
Hong Kong
Tel: (852) 2721-9778
Fax: (852) 2722-1369
Japan
9F, Tonetsu Shinka wa Bldg.
1-24-8 Shinkawa
Chuo-ku, Tokyo 104-0033
Japan
Tel: (81) 3-3523-3551
Fax: (81) 3-3523-7581
Literature Requests
www.atmel.com/literature
©Atmel Corporation 2004. All
rights reserved. Atmel® and com-
binations thereof are the
registered trademarks of Atmel
Corporation or its subsidiaries.
Other terms and product names
may be the trademarks of others.
3452A–USB–3/04/10M
PLUG & PLAY ON-THE-GO SOLUTION FOR
EMBEDDED APPLICATIONS
AT43USB380 USB 2.0 FULL
SPEED OTG/
HOST/FUNCTION
PROCESSOR
S S
S S
S OO
OO
O
LL
LL
L
UU
UU
U
TT
TT
T
II
II
I
OO
OO
O
NN
NN
N
SS
SS
S
USBUSB
USBUSB
USB
AT43USB380 DEVELOPMENT TOOLS AND REFERENCES
VV
VV
VISITISIT
ISITISIT
ISIT::
::
:
HTTPHTTP
HTTPHTTP
HTTP://://
://://
://WWWWWW
WWWWWW
WWW..
..
.AA
AA
ATMELTMEL
TMELTMEL
TMEL..
..
.COMCOM
COMCOM
COM//
//
/ADAD
ADAD
AD//
//
/PLUGPLAYOPLUGPLAYO
PLUGPLAYOPLUGPLAYO
PLUGPLAYOTGTG
TGTG
TG
Atmel’s AT43USB380 is an all-in-one USB solution designed specifically to hide
the complexity of adding OTG/host functionality to embedded designs. It features:
•An intelligent OTG/host/function processor capable of managing USB
transactions without system processor intervention
•A processor/RTOS independent software suite that includes standard USB
class device drivers and simple Application Programming Interface (API) for
custom driver development
With the AT43USB380, in-depth knowledge of USB protocol is no longer a
prerequisite for your USB development.
DEVELOPMENT KIT
The AT43DK380 is a complete starter kit and development system for the
AT43USB380 OTG/host/function processor.
AT43USB380: THE BEAUTY OF SIMPLICITY
TYPICAL SYSTEM PROCESSOR CONNECTION
AT43DK380 DEVELOPMENT KIT FEATURES
•AT43USB380 reference design board
– OTG/host/function processor
– 1 Mbyte Flash ROM expandable to 2 Mbytes
– 2 Mbytes static RAM
– 4-Port USB full-/low-speed hub
– OTG charge-pump and voltage
comparator
– USB type A, mini A/B ports
– 20-pin JTAG interface
connector
– Expansion connector to support
32-/16-/8-bit system processor
•System processor daughter cards
•USB software suite
– USB stack
– System library API set
– Standard USB class drivers
•USB clinic diagnostic and debugging tool
System
Processor
(16-bit Bus) AT43USB380
System
RAM System
ROM
USB Signals
OTG Signals
D [31:16]
D [15:0]
Addr
Control Signals
Hub
Optional
Charge-
Pump
Optional
AT43USB380 ARCHITECTURE
HARDWARE BLOCKS
The AT43USB380 is a memory-mapped USB co-processor capable of managing
USB transaction and data flo w autonomously. K ey AT43USB380 modules include:
FLEXIBLE HARDWARE DESIGN
INSTANT USB POINT-TO-POINT SOLUTION FOR EMBEDDED DEVICES
•Three operating modes: OTG, standalone host and standalone function
•Configurable system bus interface suitable for 32-/16-/8-bit
system processors
•Generic design compatible with any standard USB class and
proprietary devices
AT43USB380
FEATURES, B ENEFITS AND APPLICATIONS
INTELLIGENT ARCHITECTURE
MINIMAL CONSUMPTION OF SYSTEM RESOURCE
•Enumeration without system processor intervention
•Automatic USB frame scheduling and transaction management without
interrupts to the system processor
•High-speed DMA data transfer across system bus
COMPREHENSIVE SOFTWARE SUITE
NO USB EXPERTISE REQUIRED
•Standard USB class drivers
•Easy-to-use system APIs to build custom USB device dr ivers
•On-chip USB HUB driver
MINIMAL CUSTOM ENGINEERING
FASTEST TIME-TO-MARKET
•No need to develop and port USB software
•No time wasted for compatibility testing with different
classes of USB devices from different vendors
•Dedicated controllers handling
USB protocol and data flow to and
from the system processor
•Full-speed host/function port
•OTG charge-pump interface
providing OTG physical signaling
•Control and data FIFO blocks
with separate Rx and Tx buffering
to ensure maximum throughput
•32-/16-/8-bit system processor
interface with DMA capability
SOFTWARE ARCHITECTURE
USB application development is made easy with the tight integration of
AT43USB380 hardware and soft-
ware. The platform (processor/
RTOS) independent AT43USB380
software suite features:
•On-chip USB Firmware stack
comprised of USB host,
function, hub and OTG (HNP
and SRP) modules
•ANSI C compliant system
interface library APIs that
serve as the building blocks of
USB device drivers
•Standard USB class device
drivers presented to the system
designers in the form of ANSI C
compliant APIs
http://www.atmel.com/ad/plugplayotg
Address
OTG
Charge-Pump
Interface
USB
Transceiver
D+
D-
FIFOs
SIE
SIE Controller
System CPU
Interface
Data
USB
Controller Control
& Status
Registers
DMA
Control
System
Interface
Controller
Embedded, OS Agnostic USB Firmware
USB Class Device Drivers
System Processor
System Interface Driver
API
Manager Data Trasport
Service Descriptor
Management
USB Host Stack
Transaction
Management Frame
Scheduling HUB
Driver OTG
Protocol
Status
Handling
Mass Storage HID Printer Other USB Devices
AT43USB380 System Interface APIs (OTG, Host and Function)
Applications
Device
Enumeration
USB HubKeyboardPrinterHard Disk
Operating System
AT43USB380 ARCHITECTURE
HARDWARE BLOCKS
The AT43USB380 is a memory-mapped USB co-processor capable of managing
USB transaction and data flo w autonomously. K ey AT43USB380 modules include:
FLEXIBLE HARDWARE DESIGN
INSTANT USB POINT-TO-POINT SOLUTION FOR EMBEDDED DEVICES
•Three operating modes: OTG, standalone host and standalone function
•Configurable system bus interface suitable for 32-/16-/8-bit
system processors
•Generic design compatible with any standard USB class and
proprietary devices
AT43USB380
FEATURES, B ENEFITS AND APPLICATIONS
INTELLIGENT ARCHITECTURE
MINIMAL CONSUMPTION OF SYSTEM RESOURCE
•Enumeration without system processor intervention
•Automatic USB frame scheduling and transaction management without
interrupts to the system processor
•High-speed DMA data transfer across system bus
COMPREHENSIVE SOFTWARE SUITE
NO USB EXPERTISE REQUIRED
•Standard USB class drivers
•Easy-to-use system APIs to build custom USB device dr ivers
•On-chip USB HUB driver
MINIMAL CUSTOM ENGINEERING
FASTEST TIME-TO-MARKET
•No need to develop and port USB software
•No time wasted for compatibility testing with different
classes of USB devices from different vendors
•Dedicated controllers handling
USB protocol and data flow to and
from the system processor
•Full-speed host/function port
•OTG charge-pump interface
providing OTG physical signaling
•Control and data FIFO blocks
with separate Rx and Tx buffering
to ensure maximum throughput
•32-/16-/8-bit system processor
interface with DMA capability
SOFTWARE ARCHITECTURE
USB application development is made easy with the tight integration of
AT43USB380 hardware and soft-
ware. The platform (processor/
RTOS) independent AT43USB380
software suite features:
•On-chip USB Firmware stack
comprised of USB host,
function, hub and OTG (HNP
and SRP) modules
•ANSI C compliant system
interface library APIs that
serve as the building blocks of
USB device drivers
•Standard USB class device
drivers presented to the system
designers in the form of ANSI C
compliant APIs
http://www.atmel.com/ad/plugplayotg
Address
OTG
Charge-Pump
Interface
USB
Transceiver
D+
D-
FIFOs
SIE
SIE Controller
System CPU
Interface
Data
USB
Controller Control
& Status
Registers
DMA
Control
System
Interface
Controller
Embedded, OS Agnostic USB Firmware
USB Class Device Drivers
System Processor
System Interface Driver
API
Manager Data Trasport
Service Descriptor
Management
USB Host Stack
Transaction
Management Frame
Scheduling HUB
Driver OTG
Protocol
Status
Handling
Mass Storage HID Printer Other USB Devices
AT43USB380 System Interface APIs (OTG, Host and Function)
Applications
Device
Enumeration
USB HubKeyboardPrinterHard Disk
Operating System
Atmel Corporation
2325 Orchard Parkway
San Jose, CA 95131, USA
Tel: 1(408) 441-0311
Fax: 1(408) 487-2600
Regional Headquarters
Europe
Atmel Sarl
Route des Arsenaux 41
Case Postale 80
CH-1705 Fribourg
Switzerland
Tel: (41) 26-426-5555
Fax: (41) 26-426-5500
Asia
Room 1219
Chinachem Golden Plaza
77 Mody Road
Tsimshatsui
East Kowloon
Hong Kong
Tel: (852) 2721-9778
Fax: (852) 2722-1369
Japan
9F, Tonetsu Shinka wa Bldg.
1-24-8 Shinkawa
Chuo-ku, Tokyo 104-0033
Japan
Tel: (81) 3-3523-3551
Fax: (81) 3-3523-7581
Literature Requests
www.atmel.com/literature
©Atmel Corporation 2004. All
rights reserved. Atmel® and com-
binations thereof are the
registered trademarks of Atmel
Corporation or its subsidiaries.
Other terms and product names
may be the trademarks of others.
3452A–USB–3/04/10M
PLUG & PLAY ON-THE-GO SOLUTION FOR
EMBEDDED APPLICATIONS
AT43USB380 USB 2.0 FULL
SPEED OTG/
HOST/FUNCTION
PROCESSOR
S S
S S
S OO
OO
O
LL
LL
L
UU
UU
U
TT
TT
T
II
II
I
OO
OO
O
NN
NN
N
SS
SS
S
USBUSB
USBUSB
USB
AT43USB380 DEVELOPMENT TOOLS AND REFERENCES
VV
VV
VISITISIT
ISITISIT
ISIT::
::
:
HTTPHTTP
HTTPHTTP
HTTP://://
://://
://WWWWWW
WWWWWW
WWW..
..
.AA
AA
ATMELTMEL
TMELTMEL
TMEL..
..
.COMCOM
COMCOM
COM//
//
/ADAD
ADAD
AD//
//
/PLUGPLAYOPLUGPLAYO
PLUGPLAYOPLUGPLAYO
PLUGPLAYOTGTG
TGTG
TG
Atmel’s AT43USB380 is an all-in-one USB solution designed specifically to hide
the complexity of adding OTG/host functionality to embedded designs. It features:
•An intelligent OTG/host/function processor capable of managing USB
transactions without system processor intervention
•A processor/RTOS independent software suite that includes standard USB
class device drivers and simple Application Programming Interface (API) for
custom driver development
With the AT43USB380, in-depth knowledge of USB protocol is no longer a
prerequisite for your USB development.
DEVELOPMENT KIT
The AT43DK380 is a complete starter kit and development system for the
AT43USB380 OTG/host/function processor.
AT43USB380: THE BEAUTY OF SIMPLICITY
TYPICAL SYSTEM PROCESSOR CONNECTION
AT43DK380 DEVELOPMENT KIT FEATURES
•AT43USB380 reference design board
– OTG/host/function processor
– 1 Mbyte Flash ROM expandable to 2 Mbytes
– 2 Mbytes static RAM
– 4-Port USB full-/low-speed hub
– OTG charge-pump and voltage
comparator
– USB type A, mini A/B ports
– 20-pin JTAG interface
connector
– Expansion connector to support
32-/16-/8-bit system processor
•System processor daughter cards
•USB software suite
– USB stack
– System library API set
– Standard USB class drivers
•USB clinic diagnostic and debugging tool
System
Processor
(16-bit Bus) AT43USB380
System
RAM System
ROM
USB Signals
OTG Signals
D [31:16]
D [15:0]
Addr
Control Signals
Hub
Optional
Charge-
Pump
Optional
