<dle> commands (dte-to-dce), A n 9 3 – Silicon Laboratories SI2493/57/34/15/04 User Manual
Page 178
A N 9 3
178
Rev. 1.3
7.1.3. <DLE> Commands (DTE-to-DCE)
The characters listed in the Code column of Table 111 are referenced throughout this document with the <>
notation. Simple action commands consist of a <DLE> character plus a simple action-command character (two
bytes total).
Table 111. <DLE> Commands (DTE-to-DCE)
Format: <DLE>[Code]
Code
Hex
Simple Action Command Description
<DLE>
0x10
The DTE must shield any 0x10 characters in the voice data stream sent to the DCE to
avoid creation of a <DLE> simple-action command.
<SUB>
0x1A
More efficient representation of two 0x10 0x10 characters in the voice data stream.
<CAN>
0x18
Clear transmit buffer of voice data during +VTX session.
<NUL>
0x00
Do nothing. Refresh +VIT Inactivity Timer.
/
0x3C
Disable DTMF reporting.
~
0x2F
Enable DTMF reporting.
<ESC>
0x1B
End Voice Receive State started by the +VRX command.
!
0x21
Abort Voice Receive State started by the +VRX command.
u
0x75
Increase volume or gain during voice stream processing. For +VRX, increase the UBF
and UC0 receive gains by 3 dB. For +VTX, increase the UB8 and UB3 transmit gains by
3 dB. The voice driver should track this command and update the +VGR or +VGT setting.
Since this <DLE><u> command affects RS232 DAA and RS232 Si3000 gain registers,
the voice driver should maintain two sets of +VGT and +VGR. The voice driver will need
to know the +VLS state to determine if RS232 is connected to the Si3000 or the DAA.
This command is only processed during an active +VRX or +VTX operation.
d
0x64
Decrease volume or gain during voice stream processing. For +VRX, decrease the UB3
and UB8 receive gains by 3 dB. For +VTX, decrease the UB8 and UB3 transmit gains by
3 dB. The voice driver should track this command and update the +VGR or +VGT setting.
Since this <DLE><d> command affects RS232 DAA and RS232 Si3000 gain registers,
the voice driver should maintain two sets of +VGT and +VGR. The voice driver will need
to know the +VLS state to determine if RS232 is connected to the Si3000 or the DAA.
This command is only processed during an active +VRX or +VTX operation.