
Chapter 12. Power-related Functions
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(5) The BHT will exit from the sleep state and execute the remote wakeup program developed
by the user.
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At the host computer
(1) The host computer sends a “WAKE” character string to the BHT at least two times.
(2) Upon receipt of "ACK + "0" + ID" from the BHT, the host computer should conduct transac-
tions with the remote wakeup program in the BHT.
Upon receipt of "ACK + "1" + ID" or "ACK + "2" + ID" from the BHT, the host computer
should proceed to the corresponding error processing.
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Transmission control sequence
If in the BHT a remote wakeup program exists and the remote wakeup is activated:
Host computer
Sends 1st time
Sends 2nd time
Receives response
Conducts transactions
with the remote
wakeup program
BHT
"WAKE"
"WAKE"
ACK + "0" + ID
In charge state
(in sleep)
Ready-to-receive
Detects "WAKE" and
sends its response
Starts the remote
wakeup program
Conducts transactions
with the host program
Handled by the BHT
system program
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