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TUSB8040_1110 Datasheet(PDF) 19 Page - Texas Instruments |
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TUSB8040_1110 Datasheet(HTML) 19 Page - Texas Instruments |
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19 / 33 page  TUSB8040 www.ti.com SLLSE42F – SEPTEMBER 2010 – REVISED OCTOBER 2011 3.3.4 Product ID LSB Register Table 3-8. Register Offset 3h BIT NO. 7 6 5 4 3 2 1 0 RESET STATE 0 0 0 0 0 1 0 0 Table 3-9. Bit Descriptions – Product ID MSB Register BIT FIELD NAME ACCESS DESCRIPTION Product ID LSB. Least significant byte of the product ID assigned by Texas Instruments; the default value of this register is 40h representing the LSB of the product ID assigned by Texas Instruments. The value of this register will be reported as configured for the 7:0 productIdLsb RW SuperSpeed Device descriptor. The USB 2.0 Device descriptor will report the value in this register with bit [1] toggled. This ensures that the USB drivers load properly for both hubs. The value may be over-written to indicate a customer product ID. 3.3.5 Product ID MSB Register Table 3-10. Register Offset 4h BIT NO. 7 6 5 4 3 2 1 0 RESET STATE 1 0 0 0 0 0 0 0 Table 3-11. Bit Descriptions – Product ID MSB Register BIT FIELD NAME ACCESS DESCRIPTION Product ID MSB. Most significant byte of the product ID assigned by Texas Instruments; the 7:0 productIdMsb RW default value of this register is 80h representing the MSB of the product ID assigned by Texas Instruments. The value may be over-written to indicate a customer product ID. 3.3.6 Device Configuration Register Table 3-12. Register Offset 5h BIT NO. 7 6 5 4 3 2 1 0 RESET STATE 0 0 0 X X X X X Table 3-13. Bit Descriptions – Device Configuration Register BIT FIELD NAME ACCESS DESCRIPTION Custom Strings enable. When this bit is set to 1 and the TUSB8040 is in I2C mode, the Manufacturer String Length, Manufacturer String, Product String Length, Product String, and Language ID registers are 7 customStrings RW loaded from the contents of the EEPROM. When the value of this bit is 1 and the TUSB8040 is in SMBUS mode, the Manufacturer String Length, Manufacturer String, Product String Length, Product String, and Language ID registers may written by an SMBus host. Custom Serial Number Enable. When the TUSB8040 is in I2C mode, the TUSB8040 loads the serial number register from the contents of the EEPROM. 6 customSernum RW When the TUSB8040 is in SMBUS mode, the Serial Number registers may written by an SMBus host. This bit is always 1. Copyright © 2010–2011, Texas Instruments Incorporated FUNCTIONAL DESCRIPTION 19 Submit Documentation Feedback Product Folder Link(s): TUSB8040 |
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