TUSB8044AI datasheet(30/69 Pages) TI1

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TUSB8044A

SLLSF92A – FEBRUARY 2019 – REVISED MARCH 2019

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8.5.5 Product ID LSB Register

Figure 6. Register Offset 3h

Bit No.

Reset State

Table 13. Bit Descriptions – Product ID LSB Register

Bit

Field

Type

Description

7:0

productIdLsb

RO/RW

Product ID LSB. Least significant byte of the product ID assigned by

Texas Instruments and reported in the SuperSpeed Device descriptor.

the default value of this register is 40h representing the LSB of the

SuperSpeed product ID assigned by Texas Instruments The value

reported in the USB 2.0 Device descriptor is the value of this register

bit wise XORed with 00000010b. The value may be over-written to

indicate a customer product ID.

Value used for this field will be the non-zero value written by

EEPROM/SMBus to both PID and VID. If a zero value is written by

EEPROM/SMbus to both PID and VID, then value used for this field

will be the non-zero value from OTP. If a zero value is written by OTP,

then value used for this field will be 40h .

8.5.6 Product ID MSB Register

Figure 7. Register Offset 4h

Bit No.

Reset State

Table 14. Bit Descriptions – Product ID MSB Register

Bit

Field

Type

Description

7:0

productIdMsb

RO/RW

Product ID MSB. Most significant byte of the product ID assigned by

Texas Instruments; the default value of this register is 84h representing

the MSB of the product ID assigned by Texas Instruments. The value

may be over-written to indicate a customer product ID.

Value used for this field will be the non-zero value written by

EEPROM/SMBus to both PID and VID. If a zero value is written by

EEPROM/SMbus to both PID and VID, then value used for this field

will be the non-zero value from OTP. If a zero value is written by OTP,

then value used for this field will be 84h.

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