CC-2401K2 Page 22 of 66 2007, Copeland Communications, Inc. CC-2401K2 Datasheet Rev 1.5 Register Name Function Units S16 BTON Busy ton" />
參數(shù)資料
型號： CC-2401K2A-CS
廠商： Copeland Communications Inc
文件頁數(shù)： 15/66頁
文件大小： 0K
描述： MODEM 2400BAUD SECURE 3.3V
標(biāo)準(zhǔn)包裝： 30
數(shù)據(jù)格式： V.21，V.22，V.23，Bell 103
波特率： 2.4k
電源電壓： 3 V ~ 3.6 V
安裝類型： 表面貼裝
封裝/外殼： 模塊
包裝： 散裝
配用： 539-1002-ND - KIT EVALUATION WORLD MODEM II
其它名稱： 539-1010
CC-2401K2A-CS-ND
Data Sheet
CC-2401K2
Page 22 of 66
2007, Copeland Communications, Inc.
CC-2401K2 Datasheet Rev 1.5
Register
Name
Function
Units
S16
BTON
Busy tone on time
10 ms
S17
BTOF
Busy tone off time
10 ms
S18
BTOD
Busy tone delta time
10 ms
S19
RTON
Ringback tone on time
53.333 ms
S1A
RTOF
Ringback tone off time
53.333 ms
S1B
RTOD
Ringback tone Delta time
53.333 ms
Manual Call Progress Detection
Because other call progress tones beyond those described above may exist, the CC-2401 supports manual
call progress. This requires the host to read and write the low-level DSP registers and may require realtime
control by the host. Manual call progress may be required for detection of application specific ringback, dial
tone and busy signals.
The section on DSP level control should be read before attempting manual call
progress detection.
The call progress biquad filters can be programmed to have a custom frequency response and detection level.
Four dedicated user defined frequency detectors can be programmed to search for individual tones. The four
detectors have center frequencies that can be set by registers UDFD1-4. SE5[6][TDET] [SE8 = 0x02] Read
Only Definition can be monitored, along with TONE, to detect energy at these user defined frequencies. The
default trip-threshold for UDFD1-4 is -43 dBm but can be modified with register UDFSL.
By issuing the “ATDT;” command, the modem goes off hook and returns to command mode. The user can
then put the DSP into call progress monitoring by first setting SE8 = 0x02. Next, set Se5(DSP2) = 0x00 so no
tones are transmitted, and set SE6 (DSP3) to the appropriate code, depending on which types of tones are to
be detected.
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