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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TPS65982ABZBHR датащи(PDF) 36 Page - Texas Instruments |
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TPS65982ABZBHR датащи(HTML) 36 Page - Texas Instruments |
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36 / 121 page  LDO_3V3 IH_CC_0P9 IH_CC_1P5 IH_CC_3P0 RD_CC C_CCn VREF1 VREF2 VREF3 C CBLPLUG Tx Rx Tx Rx C CBLPLUG C RECEIVER C RECEIVER Connector Connector Cable DFP System UFP System Pullup for Attach Detection RD for Attach Detection Driver R DRIVER C DRIVER Z DRIVER 36 TPS65982 SLVSD02D – MARCH 2015 – REVISED JUNE 2019 www.ti.com Product Folder Links: TPS65982 Submit Documentation Feedback Copyright © 2015–2019, Texas Instruments Incorporated Feature Description (continued) Figure 16. ZDRIVER Circuit 9.3.1.5 USB-PD BMC Receiver The receiver block of the TPS65982 receives a signal that falls within the allowed Rx masks defined in the USB PD specification. The receive thresholds and hysteresis come from this mask. The values for VRXTR and VRXTF are listed in USB-PD Baseband Signal Requirements and Characteristics. Figure 17 shows an example of a multi-drop USB-PD connection. This connection has the typical UFP (device) to DFP (host) connection, but also includes cable USB-PD TX/Rx blocks. Only one system can be transmitting at a time. All other systems are Hi-Z (ZBMCRX). The USB-PD Specification also specifies the capacitance that can exist on the wire as well as a typical DC bias setting circuit for attach detection. Figure 17. Example USB-PD Multi-Drop Configuration 9.3.2 Cable Plug and Orientation Detection Figure 18 shows the plug and orientation detection block at each C_CC pin (C_CC1 and C_CC2). Each pin has identical detection circuitry. Figure 18. Plug and Orientation Detection Block |
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