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AT90USB128X データシートの表示(PDF) - Atmel Corporation
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AT90USB128X
USB DFU Bootloader Datasheet
Atmel Corporation
AT90USB128X Datasheet PDF : 28 Pages
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4.7.1
First Request from Host
The Host sends a DFU Download request with a Display command in the data field.
SETUP
OUT
IN
DFU_DNLOAD
Display_Data (6 bytes)
ZLP
Command Identifier
Id_display_data
03h
data[0]
00h
01h
02h
data[1] data[2]
start_address
data[3]
data[4]
end_address
Description
Display FLASH Data
Blank Check in FLASH
Display EEPROM Data
4.7.2
4.7.3
Second Request from Host
The Host sends a DFU Upload request.
Answers from the Device
The device sends to the Host the firmware from the specified start address to the specified end
address.
SETUP
IN
IN
DFU_UPLOAD
Firmware Packet 1
Firmware Packet 2
IN
OUT
Firmware Packet n
ZLP
11
7618C–AVR–07/08
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