The formula for SHDNTIMER is 175.8ms*2^(8+THR),
for THR=0, timer = 175.8m*2^8 = 45sec.,
for THR=7, timer=175.8ms*2^15 = 1.6hrs.
The formula for SHDNTIMER is 175.8ms*2^(8+THR),
for THR=0, timer = 175.8m*2^8 = 45sec.,
for THR=7, timer=175.8ms*2^15 = 1.6hrs.