USB2513 datasheet(28/57 Pages) MICROCHIP

28 / 57 page

USB251xB/xBi

DS00001692D-page 28

 2022 Microchip Technology Inc. and its subsidiaries

5.1.26

5.1.27

Bit Number

Bit Name

Description

7:0

BC_EN

Battery Charging Enable: enables the battery charging feature for the

corresponding port.

: battery charging support is not enabled

: battery charging support is enabled

Bit 7 : rsvd

Bit 6 : rsvd

Bit 5 : rsvd

Bit 4 : controls port 4

Bit 3 : controls port 3

Bit 2 : controls port 2

Bit 1 : controls port 1

Bit 0 : rsvd

Bit Number

Bit Name

Description

7:2

rsvd

1:0

BOOST_IOUT

USB electrical signaling drive strength boost bit for the upstream port.

: normal electrical drive strength - no boost

: elevated electrical drive strength - low (~ 4% boost)

: elevated electrical drive strength - medium (~ 8% boost)

: elevated electrical drive strength - high (~12% boost)

Note:

Boost could result in non-USB compliant parameters. Therefore, a

value of 00 should be implemented unless specific implementation

issues require additional signal boosting to correct for degraded USB

signalling levels.

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