TUSB8042AI datasheet(29/55 Pages) TI1

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TUSB8042AI датащи(PDF) 29 Page - Texas Instruments

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TUSB8042A

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SLLSF93 – JUNE 2019

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Table 14. Bit Descriptions – Port Used Configuration Register

Bit

Field

Type

Description

7:4

RSVD

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. This field is read only unless the customRmbl bit is set to 1.

When the corresponding USB2_ONLY bit is set, the USB2 port is used

and enabled regardless of the bit programmed into this field.

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