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TUSB3410 Arkusz danych(PDF) 81 Page - Texas Instruments

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Numer części TUSB3410
Szczegółowy opis  USB TO SERIAL PORT CONTROLLER
PDF  92 Pages
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

TUSB3410 Arkusz danych(HTML) 81 Page - Texas Instruments

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11–11
11.8 Built-In Vendor Specific USB Requests
The bootcode supports several vendor specific USB requests. These requests are primarily for internal testing only.
These functions should not be used in normal operation.
11.8.1 Reboot
The reboot command forces the bootcode to reboot. The bootcode starts over.
bmRequestType
USB_REQ_TYPE_DEVICE |
USB_REQ_TYPE_VENDOR |
USB_REQ_TYPE_OUT
01000000b
bRequest
BTC_REBOOT
0x85
wValue
None
0x0000
wIndex
None
0x0000
wLength
None
0x0000
Data
None
11.8.2 Force Execute Firmware
The force execute firmware command requests the bootcode to execute the downloaded firmware unconditionally.
bmRequestType
USB_REQ_TYPE_DEVICE |
USB_REQ_TYPE_VENDOR |
USB_REQ_TYPE_OUT
01000000b
bRequest
BTC_FORCE_EXECUTE_FIRMWARE
0x8F
wValue
None
0x0000
wIndex
None
0x0000
wLength
None
0x0000
Data
None
11.8.3 External Memory Read
The bootcode returns the content of the specified address.
bmRequestType
USB_REQ_TYPE_DEVICE |
USB_REQ_TYPE_VENDOR |
USB_REQ_TYPE_IN
11000000b
bRequest
BTC_EXETERNAL_MEMORY_READ
0x90
wValue
None
0x0000
wIndex
Data address
0xNNNN (From 0x0000 to 0xFFFF)
wLength
1 byte
0x0001
Data
Byte in the specified address
0xNN
11.8.4 External Memory Write
The external memory write command tells the bootcode to write data to the specified address.
bmRequestType
USB_REQ_TYPE_DEVICE |
USB_REQ_TYPE_VENDOR |
USB_REQ_TYPE_OUT
01000000b
bRequest
BTC_EXETERNAL_MEMORY_WRITE
0x91
wValue
HI: 0x00
LO: Data
0x00NN
wIndex
Data address
0xNNNN (From 0x0000 to 0xFFFF)
wLength
None
0x0000
Data
None



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