Promi-SD User Manual – Appendix. B S-Register
B-3
Copyright © 2006 Sena Technologies, Inc. All rights reserved.
S11=0, Promi-SD does not allow escape sequence character. The operation status of Connect cannot be changed to
Standby. As Promi-SD skips the process detecting escape sequence character, the more efficient data transmission is
expected.
S11=1, Promi-SD allow escape sequence character. Whenever it is needed, the Connect status can be changed to
Standby.
S12: Clear Data Buffer When Disconnected (default 0)
S12=0, Promi-SD does not clear the data buffer received from host system when disconnected.
S12=1, Promi-SD clears the data buffer when disconnected.
S14: Enable DTR Transfer (default 1)
S14=0, DTR/DSR signal is transferred to loop-back.
S14=1, DTR signal is transferred to DSR of remote device.
S15: Enable Disconnect by DTR (default 0)
S15=0, DTR signal cannot release the connection.
S15=1, The Bluetooth connection can be released when DTR signal is off.
This value decides whether Bluetooth connection is released when DTR signal drops or not. If this value is 1, you can use
DTR signal in order to disconnect Bluetooth connection.
S22: Fast Connect (default 0)
S22=0, none
S22=1, page scan
S22=2, inquiry scan
S22=3, page/inquiry scan
S24: Maximum Number of Inquiry Result (default 10)
The maximum number of inquiry list can be controlled. This value is up to 15,
S28: Escape Sequence Character (default 43)
The decimal number of the ASCII code of escape sequence character can be controlled. The initial value is 43, the
ASCII code of ‘+’.
S31: Page Timeout (default 300)
This is the timeout in seconds to attempt connection with ATD command. After this timeout expires, the SD will restart
automatically. If this value is 0, SD will attempt to connect without restarting
S33: Inquiry Timeout (default 30)
This is the timeout in seconds to execute inquiry scan.
S37: Supervision Timeout (default 16000)
This is the timeout in 625 sec to presume disconnection, which is set to 16000 initially. 16000 625 sec=10sec)
The smaller the value becomes, the more quickly Promi-SD can detect an abnormal disconnection. But when the
communication is suspended for some environmental reasons, it may be regarded as disconnection.
S46: BD Address of Last Connected Device
