5.12.2.4 Watchdog Trigger Register

A watchdog trigger is an 8-bit wide SPI pattern written to the WDTRIG register. A valid watchdog trigger event resets the Watchdog Timer.
Name: WDTRIG
Offset: 0x20
Reset: 0x0
Property: R/W

Bit 76543210 
 WDTRIG [7:0] 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 

Bits 7:0 – WDTRIG [7:0]

The only valid trigger pattern is 0b01010101.