SI2457-D-FS Silicon Laboratories Inc, SI2457-D-FS Datasheet - Page 132
SI2457-D-FS
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
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AN93
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.
132
Country-dependent settings
Overcurrent detection
Escape (parallel/SPI)
Function/Feature
Intrusion detection
Type II Caller ID
Escape (UART)
Modem-on-hold
Type I Caller ID
DTE interface
Power control
DTMF dialing
Pulse dialing
Blacklisting
Autobaud
EEPROM
Table 88. Modem Feature vs. Hardware, AT Command and Register Setting
Line rate
En, \Bn, \Pn, \Qn,
AT Commands
+VCID, +VCDT
\T16, \T17
&Gn, &Hn
+VCIDR
+PMHR
+PMHF
+PMHT
\Tn, \U
+PCW
+VCID
+PCW
+PMH
:E, :M
+ATO
%B
\B6
&Z
D
D
Rev. 1.3
S Registers
42, 43, 44
6, 8, 14
6, 8, 14
24
12
U76 [15:9, 8, 7:5, 4:0], U77 [15:12, 11],
U0–U4C, U4D [10,1,0], U50–U52,
U78 [15:14, 7:0], U79 [4:0], UAE
U70 [15], Parallel Register 1 [2]
U6A [1], U69 [2], U70 [10, 2],
U62 [8], U67 [6, 3:2, 1, 0],
U68 [2, 1, 0], U69 [6, 5, 4]
U77 [10, 9, 8:0], U79 [4:0]
U67 [7], U70 [11, 3],
U46–U48, U4E
U37–U45, U4E
U Registers
U70 [13,15]
U70 [12,4]
U65 [13]
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