UCS1002-1 Datasheet, PDF (42/116 Pages) SMSC Corporation – Programmable USB Port Power Controller with Charger Emulation

Programmable USB Port Power Controller with Charger Emulation
Datasheet
5.1.4
2. The bypass switch will be turned off.
3. The discharge switch will be turned on for t_DISCHARGE.
4. The port power switch will be turned on.
Active State Operation
Every time that the UCS1002 enters the Active state and the port power switch is closed, it will enter
the mode as instructed by the host controller (see Chapter 9, Active State). The UCS1002 cannot be
in the Active state (and therefore, the port power switch cannot be turned on) if any of the following
conditions exist:
1. VS < V_{S_UVLO}.
2. PWR_EN is disabled.
3. M1, M2, and EM_EN are all set to '0'.
4. S0 is set to ‘1’ and an Attach Detection event has not occurred.
Revision 1.4 (07-16-13)
42
DATASHEET
SMSC UCS1002