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SN65HVDA100QDRQ1 Datasheet(PDF) 5 Page - Texas Instruments |
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SN65HVDA100QDRQ1 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 26 page Unpowered System V V sup sup_under £ Standby Mode Driver : Off RXD: Low INH: High (On) Termination: 30 kW EN = high EN = low EN = high LIN Bus Wake-Up or Nwake Pin Wake-Up V V sup sup_under £ V V EN = low sup sup_under > V V sup sup_under £ V V sup sup_under £ V > V EN = high sup sup_under Sleep Mode Driver : Off RXD: Floating INH: High impedance (Off) Termination: Weak pullup Normal Mode Driver : On RXD: LIN bus data INH: High (On) Termination: 30 kW SN65HVDA100-Q1 www.ti.com SLIS128 – NOVEMBER 2011 OPERATING STATES Figure 2. Operating States Diagram Table 1. Operating Modes LIN BUS MODE EN RXD INH TRANSMITTER COMMENTS TERMINATION Sleep Low Floating Weak current pullup High impedance Off Wake-up event detected, waiting Standby Low Low 30 k Ω (typ) High Off on MCU to set EN Normal High LIN bus data 30 k Ω (typ) High On LIN transmission up to 20 kbps Normal Mode This is the normal operational mode, in which the receiver and driver are active, and LIN transmission up to the LIN specified maximum of 20 kbps is supported. The receiver detects the data stream on the LIN bus and outputs it on RXD for the LIN controller, where recessive on the LIN bus is a digital high, and dominate on the LIN bus is digital low. The driver transmits input data on TXD to the LIN bus. Normal mode is entered as EN transitions high while the SN65HVDA100 is in sleep or standby mode. Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback 5 |
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