Datasheet

TUSB8040A

SLLSEA7F –MAY 2012–REVISED SEPTEMBER 2013

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3.4.15 Serial Number Registers

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

Bit No. 7 6 5 4 3 2 1 0

Reset State X X x x x x x x

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] RW

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 TUSB8040A.

3.4.16 Manufacturer String Registers

Table 3-32. Register Offset 50h-8Fh

Bit No. 7 6 5 4 3 2 1 0

Reset State 0 0 0 0 0 0 0 0

Table 3-33. Bit Descriptions – Manufacturer String Registers

Bit Field Name Access Description

Manufacturer string byte N. These registers provide the string values

returned for string index 3 when mfgStringLen is greater than 0. The

number of bytes returned in the string is equal to mfgStringLen. The

7:0 mfgStringByte[n] RW

programmed data should be in UNICODE UTF-16LE encodings as

defined by The Unicode Standard, Worldwide Character Encoding,

Version 5.0.

3.4.17 Product String Registers

Table 3-34. Register Offset 90h-CFh

Bit No. 7 6 5 4 3 2 1 0

Reset State 0 0 0 0 0 0 0 0

Table 3-35. Bit Descriptions – Product String Registers

Bit Field Name Access Description

Product string byte N. These registers provide the string values returned

for string index 2 when prodStringLen is greater than 0. The number of

7:0 prodStringByte[n] RW bytes returned in the string is equal to prodStringLen. The programmed

data should be in UNICODE UTF-16LE encodings as defined by The

Unicode Standard, Worldwide Character Encoding, Version 5.0.

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