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UCS1001 데이터시트(PDF) 45 Page - Microchip Technology

부품명 UCS1001
상세설명  USB Port Power Controller with Charger Emulation
PDF  59 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

UCS1001 데이터시트(HTML) 45 Page - Microchip Technology

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USB Port Power Controller with Charger Emulation
Datasheet
SMSC UCS1001
45
Revision 1.2 (05-21-12)
DATASHEET
8.8.2
Emulation Cycling
In Dedicated Charger Emulation Cycle mode, the charger emulation profiles will be applied in the
following order:
1. Legacy 1
2. BC1.2 DCP
3. Legacy 2
4. Legacy 3
5. Legacy 4
6. Legacy 5
7. Legacy 6
8. Legacy 7
APPLICATION NOTE: If S0=’0’ and a portable device is not attached in DCE Cycle mode, the UCS1001 will be
cycling through charger emulation profiles. There is no guarantee which charger emulation
profile will be applied first when a portable device attaches.
8.8.3
DCE Cycle Retry
If none of the charger emulation profiles cause a charge current to be drawn, the UCS1001 will perform
emulation reset and cycle through the profiles again. The UCS1001 will continue to cycle through the
profiles so as long as charging current is not drawn and the PWR_EN control is enabled.
8.9
Current Limit Mode Associations
The UCS1001 will close the port power switch and use the current limiting mode as shown in Table 8.2.
Table 8.2 Current Limit Mode Options
ACTIVE MODE
CURRENT LIMIT MODE
Data Pass-through
Trip mode
BC1.2 DCP
CC mode if ILIM < 1.5 A, otherwise, trip mode
BC1.2 SDP
Trip mode
BC1.2 CDP
CC mode if ILIM < 1.5 A, otherwise, trip mode
DCE CYCLE
During DCE Cycle when a charger
emulation profile is being applied
CC mode if ILIM < 1.5 A, otherwise, trip mode
BC1.2 DCP charger emulation profile
accepted
CC mode if ILIM < 1.5 A, otherwise, trip mode
Legacy 2 charger emulation profile
accepted
CC mode if ILIM < 1.5 A, otherwise, trip mode
Legacy 1 or Legacy 3 - Legacy 7 charger
emulation profile accepted
Trip mode



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