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USB-TO-GPIO bảng dữ liệu(PDF) 13 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  USB Interface Adapter Evaluation Module
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USB-TO-GPIO bảng dữ liệu(HTML) 13 Page - Texas Instruments

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3.1
Firmware Features Summary
3.2
Firmware Version Command and Response
Chapter 3
SLLU093 – August 2006
Firmware Programming and Communications Protocol
The
following
sections
describe
the
embedded
firmware,
as
well
as
the
communications protocol supported in the USB interface adapter and how to use each
command in the protocol.
The embedded firmware in the TUSB3210 supports the following major features:
• Supports USB1.1 full speed at 12 Mbit/s. The USB interface adapter is recognized by the host as a
generic human interface device (HID), so no proprietary USB or HID driver is needed. Therefore, the
USB interface adapter can be treated as a USB plug-and-play device.
• Supports firmware programming in the external EEPROM so that firmware can be updated in the field.
See the TI website (www.ti.com) for more detailed information on firmware programming.
• Configures different pullup resistors for ALERT, DATA, and CLOCK lines
• Supports flexible I2C read or write transactions. The USB interface adapter is used as the I2C master.
• Selects different clock speeds (either 100 kHz or 400 kHz) for I2C, PMBUS, or SMBUS
communications
• Provides firmware version information (see Chapter 4 for details on firmware versioning scheme)
USB PACKET
COMMAND
BYTE 0
USB PACKET USB PACKET
USB PACKET USB PACKET USB PACKET
USB PACKET
COMMENTS
DESCRIPTION
COMMAND
BYTE 1
BYTE 2
BYTE 3
BYTE 4
BYTE 5
BYTES 6–63
CODE
Firmware
Version
0x00
See Chapter 4
(Get Version)
USB PACKET
COMMAND
BYTE 0
USB PACKET USB PACKET
USB PACKET USB PACKET USB PACKET
USB PACKET
COMMENTS
DESCRIPTION
COMMAND
BYTE 1
BYTE 2
BYTE 3
BYTE 4
BYTE 5
BYTES 6–63
CODE
Response from
Firmware
0x00
See Chapter 4
Version
See Chapter 4 for a detailed explanation of how the Family Code, Major Version, and Minor Version bytes
are assigned/interpreted.
SLLU093 – August 2006
Firmware Programming and Communications Protocol
13
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