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���������������������������������������������������������������� Maxim Integrated Products 15 MAX14820 IO-Link Device Transceiver Pin Description (continued) PIN NAME FUNCTION 14 RX Receiver Output. RX is the inverse logic level of C/Q. RX is always high when the RxDis bit in the CQConfig register is set to 1. 15 WU Active-Low Wake-Up Output. WU is a push-pull output referenced to VL. WU pulses low for 190Fs (typ) when a valid wake-up pulse is detected on the C/Q line. 16 LO Logic Input of the DO Output. LO is the logic input that drives DO. LO is referenced to VL. 17 LI Logic Output of the 24V DI Logic Input. LI is the inverse logic of DI. LI is referenced to VL. 18 UV Open-Drain Undervoltage Indicator Output. In case of an undervoltage, the UV open-drain transistor is off. 19 DI 24V Logic-Level Digital Input 20 GND Ground 21 C/Q SIO/IO-Link Data Input/Output. Drive TXEN high to enable the C/Q driver. The logic on the C/Q output is the inverse logic level of the signals on the TXC and TXQ inputs. RX is the logic inverse of C/Q. The C/Q driver output level can be set by the TXC/TXQ inputs or programmed by the Q bit. The level on C/Q can be read by the RX ouput or the QLvl bit. 22 DO 24V Logic-Level Digital Output. DO is the inverse logic level of the LO input and can be digitally controlled through the DIOConfig register. 23 VCC Power-Supply Input. Bypass VCC to GND with a 1FF ceramic capacitor. 24 VP Protected 24V Supply Output. VP is one diode drop below VCC. VP is reverse-polarity protected and can be used as a 24V protected supply to the sensor or actuator electronics. — EP Exposed Pad. Connect EP to GND. |
