Specifications

AN93
Rev. 0.8 99
Programming Examples
The following programming examples are intended to
facilitate the evaluation of various modem features and
serve as example command strings used in part or in
combination to create the desired modem operation.
Table 75 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 75 should
be reviewed to make sure all necessary pins,
commands, and registers have been considered.
Table 75. Modem Feature vs. Hardware, AT Command and Register Setting
Function/Feature Hardware
(Si2493/57/34/15/04
pin #)
AT Commands S-Registers U-Registers
Autobaud 18 \T16, \T17
Blacklisting %B 42, 43, 44
Caller ID T1 +VCID, +VCDT U70[12,4]
Caller ID T2 +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 18 En, \Bn, \Pn,
\Qn, \Tn, \U
DTMF Dialing D 6, 8, 14 U46–U48, U4E
EEPROM 3,4,18,24 :E, :M
Escape (Parallel) U70[15], Parallel Register 1[2]
Escape (Serial) 22 \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]
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]
Parallel Interface 16, 17, 18, 22, 23,
24, 4, 8, 3, 15, 9, 10,
11