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UCS1002-1 Datasheet(PDF) 10 Page - SMSC Corporation

Part # UCS1002-1
Description  Programmable USB Port Power Controller with Charger Emulation
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

UCS1002-1 Datasheet(HTML) 10 Page - SMSC Corporation

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Programmable USB Port Power Controller with Charger Emulation
Datasheet
Revision 1.4 (07-16-13)
10
SMSC UCS1002
DATASHEET
Chapter 1 Terms and Abbreviations
APPLICATION NOTE: The M1, M2, PWR_EN, and EM_EN pins each have configuration bits (<pin name>_SET in
Section 10.4.3, "Switch Configuration - 17h") that may be used to perform the same function
as the external pin state. These bits are accessed via the SMBus / I2C and are OR’d with
the respective pin. This OR’d combination of pin state and register bit is referenced as the
<pin name> control.
Table 1.1 Terms and Abbreviations
TERM /
ABBREVIATION
DESCRIPTION
Active mode
Active power state operation mode: Data Pass-through, BC1.2 SDP, BC1.2 CDP, BC1.2
DCP, or Dedicated Charger Emulation Cycle.
Attach Detection
An Attach Detection event occurs when the current drawn by a portable device is greater
than IDET_QUAL for longer than tDET_QUAL.
attachment
The physical insertion of a portable device into a USB port that UCS1002 is controlling.
CC
Constant current
CDM
Charged Device Model. JEDEC model for characterizing susceptibility of a device to
damage from ESD.
CDP or USB-IF
BC1.2 CDP
Charging downstream port. The combination of the UCS1002 CDP handshake and an
active standard USB host comprises a CDP. This enables a BC1.2 compliant portable
device to simultaneously draw current up to 1.5 A while data communication is active. The
USB high-speed data switch is closed in this mode.
charge enable
When a charger emulation profile has been accepted by a portable device and charging
commences.
charger emulation
profile
Representation of a charger comprised of DPOUT, DMOUT, and VBUS signalling which
make up a defined set of signatures or handshaking protocols.
connection
USB-IF term which refers to establishing active USB communications between a USB host
and a USB device.
current limiting mode
Determines the action that is performed when the IBUS current reaches the ILIM threshold.
Trip opens the port power switch. Constant current (variable slope) allows VBUS to be
dropped by the portable device.
DCE
Dedicated charger emulation. Charger emulation in which the UCS1002 can deliver power
only (by default). No active USB data communication is possible when charging in this
mode (by default).
DCP or USB-IF
BC1.2 DCP
Dedicated Charging Port. This functions as a dedicated charger for a BC1.2 portable
device. This allows the portable device to draw currents up to 1.5 A with constant current
limiting (and beyond 1.5 A with trip current limiting). No USB communications are possible
(by default).
DC
Dedicated charger. A charger which inherently does not have USB communications, such
as an A/C wall adapter.
disconnection
USB-IF term which refers to the loss of active USB communications between a USB host
and a USB device.


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