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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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UCS1002-2 датащи(PDF) 11 Page - Microchip Technology |
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UCS1002-2 датащи(HTML) 11 Page - Microchip Technology |
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11 / 114 page  Programmable USB Port Power Controller with Charger Emulation Datasheet SMSC UCS1002 11 Revision 1.4 (07-16-13) DATASHEET dynamic thermal management The UCS1002 automatically adjusts port power switch limits and modes to lower internal power dissipation when the thermal regulation temperature value is approached. enumeration A USB-specific term that indicates that a host is detecting and identifying USB devices. handshake Application of a charger emulation profile that requires a response. Two-way communication between the UCS1002 and the portable device. HBM Human Body Model. HSW High-speed switch. 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. POR Power-on reset. 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 Detection A Removal Detection event occurs when the current load on the VBUS pin drops to less than IREM_QUAL for longer than tREM_QUAL. removal The physical removal of a portable device from a USB port that the UCS1002 is controlling. response An action, usually in response to a stimulus, in charger emulation performed by the UCS1002 device via the USB data lines. SDP or USB-IF SDP Standard downstream port. The combination of the UCS1002 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 UCS1002 to the portable device. Stand-alone mode Indicates that the communications protocol is not active and all communications between the UCS1002 and a controller are done via the external pins only (M1, M2, EM_EN, PWR_EN, S0, and LATCH as inputs and ALERT# and A_DET# as outputs). stimulus An event in charger emulation detected by the UCS1002 device via the USB data lines. Table 1.1 Terms and Abbreviations (continued) TERM / ABBREVIATION DESCRIPTION |
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