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TUSB4041I-Q1 Datasheet(PDF) 15 Page - Texas Instruments

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Part # TUSB4041I-Q1
Description  Four-Port USB 2.0 Hub
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TUSB4041I-Q1 Datasheet(HTML) 15 Page - Texas Instruments

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TUSB4041I-Q1
www.ti.com
SLLSEK4B – JULY 2015 – REVISED JANUARY 2016
Product Folder Links: TUSB4041I-Q1
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Copyright © 2015–2016, Texas Instruments Incorporated
8.5 Register Maps
8.5.1 Configuration Registers
The internal configuration registers are accessed on byte boundaries. The configuration register values are
loaded with defaults, but can be overwritten when the TUSB4041I-Q1 device is in I2C or SMBus mode.
Table 3. Memory Map
BYTE ADDRESS
CONTENTS
EEPROM CONFIGURABLE
00h
ROM Signature Register
No
01h
Vendor ID LSB
Yes
02h
Vendor ID MSB
Yes
03h
Product ID LSB
Yes
04h
Product ID MSB
Yes
05h
Device Configuration Register
Yes
06h
Battery Charging Support Register
Yes
07h
Device Removable Configuration Register
Yes
08h
Port Used Configuration Register
Yes
09h
Reserved
Yes, program to 00h
0Ah
Device Configuration Register 2
Yes
0Bh
USB 2.0 Port Polarity Control Register
Yes
0Ch to 0Fh
Reserved
No
10h to 1Fh
UUID Byte [15:0]
No
20h to 21h
LangID Byte [1:0]
Yes, if customStrings is set
22h
Serial Number String Length
Yes, if customSerNum is set
23h
Manufacturer String Length
Yes, if customStrings is set
24h
Product String Length
Yes, if customStrings is set
25h to 2Fh
Reserved
No
30h to 4Fh
Serial Number String Byte [31:0]
Yes, if customSerNum is set
50h to 8Fh
Manufacturer String Byte [63:0]
Yes, if customStrings is set
90h to CFh
Product String Byte [63:0]
Yes, if customStrings is set
D0 to DFh
Reserved
No
F0h
Additional Feature Configuration Register
Yes
F1 to F7h
Reserved
No
F8h
Device Status and Command Register
No
F9 to FFh
Reserved
No
8.5.2 ROM Signature Register
Offset = 0h
Figure 3. ROM Signature Register
7
6
5
4
3
2
1
0
romSignature
RW-0
Table 4. ROM Signature Register Field Descriptions
Bit
Field
Type
Reset
Description
7:0
romSignature
RW
0
ROM signature register
The TUSB4041I-Q1 device uses this register in I2C mode to validate whether the
attached EEPROM has been programmed. The first byte of the EEPROM is
compared to the mask 55h and if not a match, the TUSB4041I-Q1 device aborts the
EEPROM load and executes with the register defaults.


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