TUSB8040A datasheet(28/39 Pages) TI1

28 / 39 page

TUSB8020A, TUSB8040A

SLLSEA7B – MAY 2012 – REVISED AUGUST 2012

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Table 3-27. Bit Descriptions – Manufacturer String Length Register

Bit

Field Name

Access

Description

RSVD

Reserved. Read only, returns 0 when read.

Manufacturer string length. The string length in bytes for the

manufacturer string. The default value is 0, indicating that a manufacturer

string is not provided. The maximum string length is 64 bytes. When the

6:0

mfgStringLen

field is non-zero, a manufacturer string of mfgStringLen bytes is returned

at string index 3 from the data contained in the Manufacturer String

registers.

3.4.14 Product String Length Register

Table 3-28. Register Offset 24h

Bit No.

Reset State

Table 3-29. Bit Descriptions – Product String Length Register

Bit

Field Name

Access

Description

RSVD

Reserved. Read only, returns 0 when read.

Product string length. The string length in bytes for the product string.

The default value is 0, indicating that a product string is not provided.

6:0

prodStringLen

The maximum string length is 64 bytes. When the field is non-zero, a

product string of prodStringLen bytes is returned at string index 2 from

the data contained in the Product String registers.

3.4.15 Serial Number Registers

Table 3-30. Register Offset 30h-4Fh

Bit No.

Reset State

Table 3-31. Bit Descriptions – Serial Number Registers

Bit

Field Name

Access

Description

Serial Number byte N. The serial number returned in the Serial Number

string descriptor at string index 1. The default value of these registers is

calculated from the Die ID fields in the fuseRom. When customSernum is

7:0

serialNumber[n]

1, these registers may be over-written by EEPROM contents or by an

SMBus host. The serial number will be returned in USB 2.0 descriptor of

the TUSB80x0A.

FUNCTIONAL DESCRIPTION

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