SI2401-FS Silicon Laboratories Inc, SI2401-FS Datasheet - Page 26

• Manufacturer Part Number: SI2401-FS
• Description: IC ISOMODEM SYSTEM-SIDE 16SOIC
• Manufacturer: Silicon Laboratories Inc
• Type: Integrated Global DAAr

Specifications of SI2401-FS

• Package / Case: 16-SOIC (3.9mm Width)
• Data Format: V.21, V.22, V.23, Bell 103, Bell 212A
• Baud Rates: 2.4k
• Interface: UART
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Product: Modem Chip
• Supply Voltage (min): 3 V
• Supply Current: 15 mA
• Maximum Operating Temperature: + 100 C
• Minimum Operating Temperature: - 10 C
• Mounting Style: SMD/SMT
• Package: 16SOIC
• Main Category: Chipset
• Sub-category: ISOmodem
• Maximum Data Rate: 2.4 Kbps
• Typical Operating Supply Voltage: 3.3 V
• Power Supply Type: Digital
• Typical Supply Current: 10 mA
• Minimum Operating Supply Voltage: 3 V
• Maximum Operating Supply Voltage: 3.6 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1167 - BOARD EVAL SI2401 UART INTERFACE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 336-1095

Si2401/Si3008
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>”
immediately causes the ISOmodem
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 causes the Si2401 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 in 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) = 110
tone (as indicated by UFRQ in Table 18) with an
amplitude of TGNL.
Table 17 shows the mappings of Si2401 DTMF values,
keyboard equivalents, and related dual tones.
26
U.S., Canada (default)
Japan, Korea
to
Write
Hong Kong
Singapore
Country
Malaysia
Hungary
Mexico
Taiwan
China
India
0
Table 16. Si2401 Global Ringer and Busy Tone Cadence Settings
Only).
seconds,
b
generates the user-defined
For
and
®
command.
example,
chipset to dial and
RTON
issuing
0x12
0x07
0x17
0x07
0x12
0x07
0x12
0x07
0x12
0x25
S19
setting
This
Rev. 1.1
an
RTOF
0x4B
0x4B
0x4B
0x03
0x46
0x03
0x25
0x03
0x03
0x25
S1A
DTMF
Code
10
12
13
14
15
11
0
1
2
3
4
5
6
7
8
9
RTOD
0x08
0x01
0x0F
0x01
0x04
0x01
0x08
0x01
0x04
0x08
S1B
Equivalent
Keyboard
Table 17. DTMF Values
D
C
A
B
0
1
2
3
4
5
6
7
8
9
#
*
BTON
0x23
0x1E
0x4B
0x32
0x23
0x4B
0x32
0x32
0x32
0x19
S16
Contact
Digit
ID
B
C
D
E
0
1
2
3
4
5
6
7
8
9
–
F
BTOF
0x1E
0x4B
0x4B
0x23
0x32
0x32
0x41
0x19
0x32
0x32
S17
Low
941
697
697
697
770
770
770
852
852
852
941
941
941
697
770
852
Tones
BTOD
0x04
0x05
0x03
0x08
0x05
0x07
0x03
0x08
0x05
0x05
S18
High
1336
1209
1336
1477
1209
1336
1477
1209
1336
1477
1633
1209
1477
1633
1633
1633