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USB2512B Datenblatt(PDF) 28 Page - Microchip Technology

Teilenummer USB2512B
Bauteilbeschribung  USB 2.0 Hi-Speed Hub Controller
PDF  57 Pages
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Hersteller  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB2512B Datenblatt(HTML) 28 Page - Microchip Technology

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USB251xB/xBi
DS00001692C-page 28
 2010 - 2015 Microchip Technology Inc.
5.1.26
REGISTER D0H: BATTERY CHARGING ENABLE
5.1.27
REGISTER F6H: BOOST_UP
Bit Number
Bit Name
Description
7:0
BC_EN
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
Bit Number
Bit Name
Description
7:2
rsvd
1:0
BOOST_IOUT
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.



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