Rainbow Electronics MAX14821 - Manual (Page 10)

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MAX14821
IO-Link Device Transceiver
Figure 5. Wake-Up Detection Timing
Figure 6. SPI Timing Diagram
TXEN
TXC AND TXQ
NOTE: THE MAX14821 RECOGNIZES A WAKE-UP PULSE WHEN C/Q IS SHORTED FROM HIGH-TO-LOW OR FROM LOW-TO-HIGH FOR t WUMIN < t WU < t WUMAX .
C/Q
t WUMIN < t WU < t WUMAX
t WUL
< t WUMIN
NO WAKE-UP
TXC AND TXQ
TXEN
GND
C/Q
WU
WU
MAX14821
t CSH t CL
t CSS t CH
t CSH
CS
SCLK
SDI
SDO
t DS
t DH
t DO