Silicon Laboratories SI2493/57/34/15/04 - Manual (Page 132)

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132 Rev. 1.3
6. Programming Examples
The following programming examples are intended to facilitate the evaluation of various modem features and serve
as example command strings that can be used singly or in combination to create the desired modem operation.
6.1. Quick Reference
Table 88 summarizes the modem function/feature and the associated hardware pins, AT commands, S registers,
and U registers. When a command string is created to enable a particular feature, Table 88 should be reviewed to
make sure all necessary commands and registers have been considered.
Table 88. Modem Feature vs. Hardware, AT Command and Register Setting
Function/Feature AT Commands S Registers U Registers
Autobaud \T16, \T17
Blacklisting %B 42, 43, 44
Type I Caller ID +VCID, +VCDT U70 [12,4]
Type II Caller ID +PCW
+VCID
+VCIDR
Country-dependent settings U0–U4C, U4D [10,1,0], U50–U52,
U62 [8], U67 [6, 3:2, 1, 0],
U68 [2, 1, 0], U69 [6, 5, 4]
DTE interface En, \Bn, \Pn, \Qn,
\Tn, \U
DTMF dialing D 6, 8, 14 U46–U48, U4E
EEPROM :E, :M
Escape (parallel/SPI) U70 [15], Parallel Register 1 [2]
Escape (UART) \B6 12 U70 [13,15]
Intrusion detection U6A [1], U69 [2], U70 [10, 2],
U76 [15:9, 8, 7:5, 4:0], U77 [15:12, 11],
U78 [15:14, 7:0], U79 [4:0], UAE
Line rate &Gn, &Hn
Modem-on-hold +PCW
+PMHF
+PMHR
+PMHT
+PMH
+ATO
Overcurrent detection U67 [7], U70 [11, 3],
U77 [10, 9, 8:0], U79 [4:0]
Power control &Z 24 U65 [13]
Pulse dialing D 6, 8, 14 U37–U45, U4E