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TUSB8041RGCT 数据表(PDF) 17 Page - Texas Instruments |
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TUSB8041RGCT 数据表(HTML) 17 Page - Texas Instruments |
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17 / 49 page  17 TUSB8041 www.ti.com SLLSEE4E – JUNE 2014 – REVISED JUNE 2016 Submit Documentation Feedback Copyright © 2014–2016, 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 over-written when the TUSB8041 is in I2C or SMBus mode. Table 3. TUSB8041 Register 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-0Fh Reserved No 10h-1Fh UUID Byte [15:0] No 20h-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-2Fh Reserved No 30h-4Fh Serial Number String Byte [31:0] Yes, if customSerNum is set 50h-8Fh Manufacturer String Byte [63:0] Yes, if customStrings is set 90h-CFh Product String Byte [63:0] Yes, if customStrings is set D0-DFh Reserved No F0h Additional Feature Configuration Register Yes F1-F7h Reserved No F8h Device Status and Command Register No F9-FFh Reserved No 8.5.2 ROM Signature Register Table 4. Register Offset 0h Bit No. 7 6 5 4 3 2 1 0 Reset State 0 0 0 0 0 0 0 0 Table 5. Bit Descriptions – ROM Signature Register Bit Field Name Access Description 7:0 romSignature RW ROM Signature Register. This register is used by the TUSB8041 in I2C mode to validate the attached EEPROM has been programmed. The first byte of the EEPROM is compared to the mask 55h and if not a match, the TUSB8041 aborts the EEPROM load and executes with the register defaults. |
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