SI2493-D-FS Silicon Laboratories Inc, SI2493-D-FS Datasheet - Page 90

• 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

AN93
90
S Register
(Decimal)
41
42
43
44
50
51
Dial attempts to blacklist.
V.34 symbol rate - Symbol rate for V.34 when using
the &T4 and &T5 commands.
0 – 2400
1 – 2743
2 – 2800
3 – 3000
4 – 3200
5 – 3429
A valid combination of symbol rate (S41) and data rate
(&G) must be selected.
Symbol Rate
2400
2743
2800
3000
3200
3429
Blacklisting—The ISOmodem does not dial the same
number more than two times in S44 seconds. An
attempt to dial a third time within S44 seconds results
in a BLACKLISTED result code. If the blacklist mem-
ory 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 lists the numbers on the blacklists.
0 – disabled
1 – enabled
When blacklisting is enabled with S42, this value con-
trols the number of dial attempts that result in a num-
ber being blacklisted.
Blacklist Timer
Period during which blacklisting is active
Minimum on-hook time—Modem remains on-hook for
S50 seconds. Any attempt to go off-hook is delayed
until this timer expires.
Number to start checking for an outside PBX line.
symbols/second
symbols/second
symbols/second
symbols/second
symbols/second
symbols/second
Table 45. S-Register Descriptions (Continued)
Allowable Data Rates
2400 – 21600
4800 – 26400
4800 – 26400
4800 – 28800
4800 – 31200
4800 – 33600
Function
Definition
Rev. 1.3
0 (disabled)
(Decimal)
Default
180
0
4
3
1
Range
0–255
0–255
0–5
0–1
0–4
0–9
seconds
seconds
Units
–
–
–
–