Silicon Laboratories SI2493/57/34/15/04 - Manual (Page 205)

AN93
Rev. 1.3 205
AT+VRX CONNECT
Trigger receive operation. The first byte
after the newline character following the
CONNECT message will be the first data
stream byte.
[Voice Stream]
Receive OGM voice stream. During voice
stream capture, the user can adjust the
UC0 value via the <DLE><u> and
<DLE><d> commands. The host voice
driver will need track the number of adjust-
ments and update the +VGR value for
future use.
<DLE><!>
<DLE><ETX>
OK
Terminate the receive operation. The
modem will respond with <DLE><ETX> to
mark the end of the data stream. The OK
denotes the return to command mode. A
Handset Lowered Event, timeout, or silence
event can trigger the <DLE><!> transmis-
sion.
AT:U0B1,0 OK
Disable Si3000-to-DAA transmit gain path.
This ensures codec tones are not sent to
the FDV and DTMF.
AT:U199|A OK
Mute the microphone and speaker paths to
the codec.
AT:U72,0108 OK
Configure Si3000 Register 1:
Disable speaker driver
Enable line output driver
Disable telephone instrument driver
Disable MBIAS output
AT:U72,05D7 OK
Configure Si3000 Register 5:
20 dB Line In gain
Enable Line In
20 dB MIC input gain
Mute MIC input
Mute telephone instrument input
Enable IIR filter
AT:U72,065E OK
Configure Si3000 Register 6:
0 dB RX PGA gain
Enable Line Out
Disable telephone instrument output
AT:U72,075E OK
Configure Si3000 Register 7:
0 dB RX PGA gain
Enable SPKRL
Mute SPKRR
Table 129. TAM Handset Record OGM (Continued)