參數(shù)資料
型號(hào)： SI2400URT-EVB
廠商： Silicon Laboratories Inc
文件頁數(shù)： 33/94頁
文件大?。?/td> 0K
描述： BOARD EVAL FOR SI2400 ISOMODEM
標(biāo)準(zhǔn)包裝： 1
系列： ISOmodem®
主要目的： 電信，調(diào)制解調(diào)器
嵌入式： 否
已用 IC / 零件： SI2400
主要屬性： 雙路 RJ-11 連接至電話線路，音頻連接器
次要屬性： RS-232，TTL 串行和 USB 接口
已供物品： 板，調(diào)制解調(diào)器，電源
相關(guān)產(chǎn)品： SI2400-BS-ND - IC ISOMODEM SYSTEM-SIDE 16SOIC
SI2400-FS-ND - IC ISOMODEM SYST-SIDE DAA 16SOIC
336-1093-ND - IC ISOMODEM SYSTEM-SIDE 16SOIC
其它名稱： 336-1166
Si2400
Rev. 1.3
39
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)
to
0
seconds,
and
issuing
an
“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)
Write
Only).
For
example,
setting
SE5[2:0] (TONC) = 110b will generate the user-defined
tone as indicated by UFRQ in Table 24 with an
amplitude of TGNL.
Table 23 shows the mappings of Si2400 DTMF values,
keyboard equivalents, and the related dual tones.
Table 23. DTMF
DTMF
Code
Keyboard
Equivalent
Contact
ID
Digit
Tones
Low
High
0
941
1336
1
697
1209
2
697
1336
3
697
1477
4
770
1209
5
770
1336
6
770
1477
7
852
1209
8
852
1336
9
852
1477
10
D
–
941
1633
11
*
B
941
1209
12
#
C
941
1477
13
A
D
697
1633
14
B
E
770
1633
15
C
F
852
1633
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