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TUSB4041IPAP 数据表(PDF) 18 Page - Texas Instruments |
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TUSB4041IPAP 数据表(HTML) 18 Page - Texas Instruments |
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18 / 48 page  18 TUSB4041I SLLSEK3E – JULY 2015 – REVISED SEPTEMBER 2017 www.ti.com Product Folder Links: TUSB4041I Submit Documentation Feedback Copyright © 2015–2017, Texas Instruments Incorporated 8.5.5 Product ID LSB Register Offset = 3h, reset = 40h Figure 6. Product ID LSB Register 7 6 5 4 3 2 1 0 productIdLsb[7] productIdLsb[6] productIdLsb[5:0] R/RW-0 R/RW-1 R/RW-0 Table 7. Product ID LSB Register Field Descriptions Bit Field Type Reset Description 7 productIdLsb[7] R/RW 0 Product ID LSB. The default value of this register is 40h representing the LSB of the product ID assigned by TI. The value reported in the USB 2.0 device descriptor is the value of this register bit wise XORed with 00000010b. This device will always report the XORed PID LSB value of 0x42. The value may be overwritten to indicate a customer product ID. This field is R/W unless the OTP ROM VID and OTP ROM PID values are non-zero. If both values are non-zero, the value when reading this register will reflect the OTP ROM value. 6 productIdLsb[6] R/RW 1 5:0 productIdLsb[5:0] R/RW 0 8.5.6 Product ID MSB Register Offset = 4h, reset = 81h Figure 7. Product ID MSB Register 7 6 5 4 3 2 1 0 productIdMsb[7] productIdMsb[6:1] productIdMsb[0] R/RW-1 R/RW-0 R/RW-1 Table 8. Product ID MSB Register Field Descriptions Bit Field Type Reset Description 7 productIdMsb[7] R/RW 1 Product ID MSB Most significant byte of the product ID assigned by TI; the default value of this register is 81h representing the MSB of the product ID assigned by TI. The value may be overwritten to indicate a customer product ID. This field is R/W unless the OTP ROM VID and OTP ROM PID values are non-zero. If both values are non-zero, the value when reading this register will reflect the OTP ROM value. 6:1 productIdMsb[6:1] R/RW 0 0 productIdMsb[0] R/RW 1 |
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