SI3015-FS Silicon Laboratories Inc, SI3015-FS Datasheet - Page 39

• Manufacturer Part Number: SI3015-FS
• Description: SI2400 ISOMODEM LINE-SIDE
• Manufacturer: Silicon Laboratories Inc

Specifications of SI3015-FS

• Data Format: V.90
• Interface: Serial
• Voltage - Supply: 3.3 V ~ 5 V
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Baud Rates: -

At this point, users may program their own algorithm to
monitor the detected tones. If the host wishes to dial, it
should do so by blind dialing, setting the dial timeout
S01 (DW)
“ATDT<Phone Number><CR>;” command. This will
immediately dial and return to command mode.
Once the host has detected an answer tone using
manual call progress, the host should immediately
execute the “ATDT” command in order to make a
connection. This will cause the Si2400 to search for the
modem answer tone and begin the correct connect
sequence.
In manual call progress, the DSP can be programmed
to detect specific tones. The result of the detection is
reported into SE5 (SE8 = 0x2) as explained above. The
output is priority encoded such that if multiple tones are
detected, the one with the highest priority whose
detection is also enabled is reported (see SE5 [SE8=02]
Read Only.)
In manual call progress, the DSP can be programmed
to generate specific tones (see SE5[2:0] (TONC)
(SE8 = 02)
SE5[2:0] (TONC) = 110b will generate the user-defined
tone as indicated by UFRQ in Table 25 with an
amplitude of TGNL.
Table 24 shows the mappings of Si2400 DTMF values,
keyboard equivalents, and the related dual tones.
to
Write
0
Only).
seconds,
For
and
example,
issuing
setting
Rev. 1.1
an
DTMF
Code
10
12
13
14
15
11
0
1
2
3
4
5
6
7
8
9
Equivalent
Keyboard
D
C
A
B
0
1
2
3
4
5
6
7
8
9
#
*
Table 24. DTMF
Contact
Digit
ID
B
C
D
E
0
1
2
3
4
5
6
7
8
9
–
F
Low
941
697
697
697
770
770
770
852
852
852
941
941
941
697
770
852
Si2400
Tones
High
1336
1209
1336
1477
1209
1336
1477
1209
1336
1477
1633
1209
1477
1633
1633
1633
39