SI2493-D-FS Silicon Laboratories Inc, SI2493-D-FS Datasheet - Page 74
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SI2493-D-FS
Manufacturer Part Number
SI2493-D-FS
Description
IC ISOMODEM SYSTEM-SIDE 16SOIC
Manufacturer
Silicon Laboratories Inc
Specifications of SI2493-D-FS
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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74
+VLS = n
+VNH = <hook
>
Command
+VGT
+VIP
+VIT
Table 39. Basic AT Command Set (Continued)
Transmit Gain Selection.
The <gain> parameter has a range of 112-134 with 128 being the
nominal value. This represents a range of -48 to 18 dB. The default
is 128 (0 dB). This command is used to control the transmit gain at
the DTE to either the Si3000 Codec or the DAA. The purpose is to
adjust the DTE transmit gain for the TAM voice stream during idle
state.
Load Voice Factory Defaults.
DTE/DCE Inactivity Timer.
The <timer> parameter has a range of 0–255 with units of sec-
onds.
The default is 0 (disable).
Analog Source / Destination Select.
n
0
1
disabled.
4
5
Tone detectors enabled.
15
20
enabled.
21
Automatic Hangup Control.
<hook>
0
1
2
Description
ISOmodem on-hook. AOUT disabled. Tone detec-
tors disabled. Si3000 sample pass-through to
DAA is inactive.
ISOmodem off-hook. AOUT disabled. Tone detectors
ISOmodem on-hook. AOUT connected to ISOmo-
dem tone generators. Tone detectors disabled.
ISOmodem off-hook. AOUT connected to PSTN.
ISOmodem goes off-hook, begins V.253 tone event
reporting and Si3000 to DAA sample pass-through
becomes active. Dial tone can be heard on handset.
ISOmodem on-hook. AOUT disabled. Tone detectors
ISOmodem on-hook. AOUT connected to ISOmo-
dem tone generators. Tone detectors enabled.
Hook control description
The ISOmodem retains automatic hangups as
is normal in the other modes (such as hanging
up the phone when the ISOmodem does not
detect a data carrier with a given time interval).
The ISOmodem shall disable automatic hangups
in the other non-voice modes.
The ISOmodem shall disable all hang-ups in other
non-voice modes. The ISOmodem shall only per-
form a “logical” hangup (return the OK result
code).
Rev. 1.3
Action
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