SI2493-D-FS Silicon Laboratories Inc, SI2493-D-FS Datasheet - Page 235

• 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

9.2. SMS AT Command Set
Table 146 shows the AT commands that the host (DTE) uses to control the transmission or reception of SMS
messages.
+FCLASS=256
AT Command
+FRM=200
+FTM=201
+FTM=202
DTXXXX;
&D1
&D2
DT;
ISOmodem Response
CONNECT 1 or
CONNECT 2
CONNECT
CONNECT
Table 146. AT Commands for SMS
OK
OK
OK
OK
OK
Rev. 1.3
ESC (pin 22) escapes to command mode from data
mode if also enabled by HES (Enable Hardware
Escape Pin): U70, bit 15.
ESC (pin 22) assertion during a modem connection
causes the modem to go on-hook and return to com-
mand mode. The escape pin must be enabled by set-
ting bit HES: U70, bit 15.
Enables SMS mode
Originate modem dials XXXX, then goes back into
command mode.
Answer modem picks up the line and goes back into
command mode.
Receive modem goes into data mode and waits for
FSK data from Transmit modem; response is deter-
mined by whether a Protocol 1 or 2 message was
received.
Transmit modem goes into data mode and waits for
data from the DTE. Sends marks when first data byte is
received, followed by data.
Transmit modem goes into data mode and waits for
data from the DTE. When first data byte is received,
modem sends Channel Seizure and marks followed by
data.
Description
AN93
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