SI2457-D-FS Silicon Laboratories Inc, SI2457-D-FS Datasheet - Page 175

• Manufacturer Part Number: SI2457-D-FS
• Description: IC ISOMODEM SYSTEM-SIDE 16SOIC
• Manufacturer: Silicon Laboratories Inc

Specifications of SI2457-D-FS

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

+VRA = <interval>
+VRID = <rmode>
+VNH = <hook>
+VLS = <label>
Command
Table 110. Extended AT+ Command Set (Continued)
Analog Source / Destination Selection
<label>
0
1
4
5
13
pass-through to DAA is active with options for speakerphone operation.
14
is active for DTE voice stream pass-through.
15
pass-through to DAA is active with options for handset operation.
20
21
enabled.
Table 117 on page 190 shows the voice-mode operation and the signal paths. See
10.2.4.2 of V.253 for an explanation of the AT +VLS=? command results. If an ATD
command is sent while the DCE is in VLS=0 and +FCLASS=8, the DCE will automati-
cally transition to VLS=1. The ATH command will automatically force the DCE to
VLS=0. The main options of interest are the 0, 13, 14, and 5. The +VLS=0 setting
must be applied first before applying a new +VLS value to ensure the mode is exited
properly.
Automatic Hangup Control
<hook>
0
(such as hanging up the phone when the ISOmodem does not detect a data carrier
with a given time interval).
1
modes.
2
DCE shall only perform a “logical” hangup (return the OK result code).
Ringing Tone Goes Away Timer
The DCE only uses this command in call origination transactions. This command sets
the amount of time in 0.1 second units the DCE shall wait between Ringing Tone
before it can assume that the remote modem has gone off-hook. Default time is five
seconds.
Repeat Caller ID
<rmode>
0
form.
1
form.
Description
DCE is on-hook. AOUT disabled. Tone detectors disabled.
Si3000 sample pass-through to DAA is inactive.
DCE is off-hook. AOUT disabled. Tone detectors disabled.
DCE is on-hook. AOUT connected to tone generators.
Tone detectors disabled.
DCE is off-hook. AOUT connected to PSTN.
Tone detectors enabled.
DCE is off-hook. V.253 tone event reporting enabled. Si3000 sample
DCE is on-hook. V.253 tone event reporting enabled. Si3000 interface
DCE is off-hook. V.253 tone event reporting enabled. Si3000 sample
DCE is on-hook. AOUT disabled. Tone detectors enabled.
DCE is on-hook. AOUT connected to tone generators. Tone detectors
Description
The DCE retains automatic hangups as is normal in the other modes
The DCE shall disable automatic hangups in the other non-voice
The DCE shall disable all hang-ups in other non-voice modes. The
Description
Display Caller ID information of the last incoming call in formatted
Display Caller ID information of the last incoming call in unformatted
Rev. 1.3
Action
AN93
175