JAJSFH6D May 2018 – October 2022 TPS65987D
PRODUCTION DATA
The receiver block of the TPS65987D 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.
Figure 8-8 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.