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TUSB8020BPHPR bảng dữ liệu(PDF) 21 Page - Texas Instruments |
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TUSB8020BPHPR bảng dữ liệu(HTML) 21 Page - Texas Instruments |
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21 / 44 page  21 TUSB8020B www.ti.com SLLSEF6C – JULY 2014 – REVISED JUNE 2017 Product Folder Links: TUSB8020B Submit Documentation Feedback Copyright © 2014–2017, Texas Instruments Incorporated 8.5.1.15 Serial Number String Length Register (offset = 22h) Figure 17. Register Offset 22h 7 6 5 4 3 2 1 0 0 0 0 1 1 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W LEGEND: R/W = Read/Write; R = Read only; –n = value after reset Table 18. Bit Descriptions – Serial Number String Length Register Bit Field Name Access Reset Description 7:6 RSVD RO Reserved. Read only, returns 0 when read. 5:0 serNumStringLen RO/RW Serial number string length. The string length in bytes for the serial number string. The default value is 18h indicating that a 24-byte serial number string is supported. The maximum string length is 32 bytes. When customSernum is 1, this field may be overwritten by the contents of an attached EEPROM or by an SMBus host. When the field is non-zero, a serial number string of serNumbStringLen bytes is returned at string index 1 from the data contained in the Serial Number String registers. 8.5.1.16 Manufacturer String Length Register (offset = 23h) Figure 18. Register Offset 23h 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 0 R R/W R/W R/W R/W R/W R/W R/W LEGEND: R/W = Read/Write; R = Read only; –n = value after reset Table 19. Bit Descriptions – Manufacturer String Length Register Bit Field Name Access Reset Description 7 RSVD RO Reserved. Read only, returns 0 when read. 6:0 mfgStringLen RO/RW 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 customStrings is 1, this field may be overwritten by the contents of an attached EEPROM or by an SMBus host. When the 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. 8.5.1.17 Product String Length Register (offset = 24h) Figure 19. Register Offset 24h 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 0 R R/W R/W R/W R/W R/W R/W R/W LEGEND: R/W = Read/Write; R = Read only; –n = value after reset Table 20. Bit Descriptions – Product String Length Register Bit Field Name Access Reset Description 7 RSVD RO Reserved. Read only, returns 0 when read. 6:0 prodStringLen RO/RW 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. The maximum string length is 64 bytes. When customStrings is 1, this field may be overwritten by the contents of an attached EEPROM or by an SMBus host. 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. |
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