
Chapter 12. Power-related Functions
145
(4) The BHT will exit from the off state and execute the remote wakeup program developed
by the user.
Conduct transactions
for BHT's response.
Yes
o
Host computer
Any
response
from the BHT?
Turn the BHT on to ready
to receive commands.
Send response.
Start the remote
wakeup program.
BHT
Conduct transactions with
the
BHT application program.
The received command
contains "WAKE"?
"WAKE"
Transacted by the
BHT system program.
Start the sending
timer or counter.
Start the remote wakeup.
30 ms elapsed?
from the BHT?
Sending
timer
End the remote wakeup.
Send
Start 30 ms count.
Start the remote wakeup start timer.
Read
fo
remote wakeu
.
1 min elapsed?
Start 100 ms count.
Any command received
from
the host?
Remote wakeup
program exists?
Send response.
ACK
+"0"
+ID
EOT
+"1"
+ID
100 ms ela
sed?
Turn the BHT off.
Timeout.
Turn the BHT off.
Remote wakeup
start
timer
counted up?
Transacted
by the BHT
hardware.
o
Yes
o
Yes
o
Yes
o
Yes
o
Yes
No
Yes
o
Yes
o
Yes
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