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UCS1001-2-BP-TR Datasheet(PDF) 9 Page - Microchip Technology |
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UCS1001-2-BP-TR Datasheet(HTML) 9 Page - Microchip Technology |
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9 / 59 page  USB Port Power Controller with Charger Emulation Datasheet SMSC UCS1001 9 Revision 1.2 (05-21-12) DATASHEET IBUS_R2MIN Current limiter mode boundary. ILIM The IBUS current threshold used in current limiting. In trip mode, when ILIM is reached, the port power switch is opened. In constant current mode, when the current exceeds ILIM, operation continues at a reduced voltage and increased current; if VBUS voltage drops below VBUS_MIN, the port power switch is opened. Legacy USB devices that require non-BC1.2 signatures be applied on the DPOUT and DMOUT pins to enable charging. OCL Over-current limit. portable device USB device attached to the USB port. power thief A USB device that does not follow the handshaking conventions of a BC1.2 device or Legacy devices and draws current immediately upon receiving power (i.e., a USB book light, portable fan, etc). removal The physical removal of a portable device from a USB port that the UCS1001 is controlling. SDP or USB-IF SDP Standard downstream port. The combination of the UCS1001 high-speed switch being closed with an upstream USB host present comprises a BC1.2 SDP. This enables a BC1.2 compliant portable device to simultaneously draw current up to 0.5 A while data communication is active. signature Application of a charger emulation profile without waiting for a response. One-way communication from the UCS1001 to the portable device. Table 1.1 Terms and Abbreviations (continued) TERM / ABBREVIATION DESCRIPTION |
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