IO-Link Device Transceiver ( 29 Page)
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IO-Link Device Transceiver
Pin Description (continued)
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.
Active-Low Wake-Up Output. WU is a push-pull output referenced to V
. WU pulses low for 190Fs (typ)
when a valid wake-up pulse is detected on the C/Q line.
Logic Input of the DO Output. LO is the logic input that drives DO. LO is referenced to V
Logic Output of the 24V DI Logic Input. LI is the inverse logic of DI. LI is referenced to V
Open-Drain Undervoltage Indicator Output. In case of an undervoltage, the UV open-drain transistor is off.
24V Logic-Level Digital Input
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.
24V Logic-Level Digital Output. DO is the inverse logic level of the LO input and can be digitally controlled
through the DIOConfig register.
Power-Supply Input. Bypass V
to GND with a 1FF ceramic capacitor.
Protected 24V Supply Output. V
is one diode drop below V
is reverse-polarity protected and can be
used as a 24V protected supply to the sensor or actuator electronics.
Exposed Pad. Connect EP to GND.
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