USB2512BI/M2 View Datasheet(PDF) - Microchip Technology

Part Name

Description

MFG CO.

USB2512BI/M2

USB 2.0 Hi-Speed Hub Controller

Microchip Technology 

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USB251xB/xBi

5.1.26 REGISTER D0H: BATTERY CHARGING ENABLE

Bit Number

7:0

Bit Name

BC_EN

Description

Battery Charging Enable: enables the battery charging feature for the

corresponding port.

0 : battery charging support is not enabled

1 : 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

5.1.27 REGISTER F6H: BOOST_UP

Bit Number

7:2

1:0

Bit Name

rsvd

BOOST_IOUT

Description

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

00 : normal electrical drive strength - no boost

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

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

11 : 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.

DS00001692C-page 28

 2010 - 2015 Microchip Technology Inc.

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