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TUSB8043 数据表(PDF) 28 Page - Texas Instruments |
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TUSB8043 数据表(HTML) 28 Page - Texas Instruments |
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28 / 59 page  28 TUSB8043 SLLSEW4 – JUNE 2017 www.ti.com Product Folder Links: TUSB8043 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Table 15. Bit Descriptions – Port Used Configuration Register Bit Field Type Description 7:4 RSVD RO Reserved. Read only. 3:0 used[3:0] RO/RW Used. The bits in this field indicate whether a port is enabled. 0 = The port is not used or disabled 1 = The port is used or enabled Each bit corresponds directly to a downstream port, i.e. used0 corresponds to downstream port 1, used1 corresponds to downstream port 2, etc. All combinations are supported with the exception of both ports 1 and 3 marked as disabled. This field is read only unless the customRmbl bit is set to 1. When the corresponding USB2_ONLY bit is set, the USB2 port will be used and enabled regardless of the bit programmed into this field. |
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