SI2457-C-GT Silicon Laboratories Inc, SI2457-C-GT Datasheet - Page 41
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SI2457-C-GT
Manufacturer Part Number
SI2457-C-GT
Description
IC ISOMODEM SYSTEM-SIDE 24TSSOP
Manufacturer
Silicon Laboratories Inc
Datasheet
1.SI2404-C-FS.pdf
(74 pages)
Specifications of SI2457-C-GT
Mfg Application Notes
SI2493/57/34/15/04, Appl Note AN93
Data Format
V.21, V.22, V.23, V.32, V.34, V.90, Bell 103, Bell 212A
Baud Rates
56k
Interface
Parallel, UART
Voltage - Supply
3 V ~ 3.6 V
Mounting Type
Surface Mount
Package / Case
24-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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S-Register
(Decimal)
42
43
44
50
51
Blacklisting—The Si2457/34/15/04 will not dial the
same number more than two times in three minutes.
An attempt to dial a third time within three minutes will
result in a “BLACKLISTED” result code. If the blacklist
memory is full, any dial to a new number will result in a
“BLACKLIST FULL” result code. Numbers are added
to the blacklist only if the modem connection fails. The
%B command will list the numbers on the blacklists.
0 = disabled
1 = enabled
Dial Attempts to Blacklist.
When blacklisting is enabled with S42, this value con-
trols the number of dial attempts that will result in a
number being blacklisted.
Blacklist Timer.
Period during which blacklisting is active.
Minimum on-hook time—Modem will remain on-hook
for S50 seconds. Any attempt to go off-hook will be
delayed until this timer expires.
Number to start checking for an outside line on a PBX.
See &X command for details.
Table 15. S-Register Description (Continued)
Function
Definition
Rev. 1.1
0 (disabled)
(Decimal)
Default
180
4
3
1
Si2457/34/15/04
Range
0–255
0–255
0–1
0–4
0–9
seconds
seconds
Units
—
—
41
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