參數(shù)資料
型號: D6571E
廠商: Electronic Theatre Controls, Inc.
英文描述: Chip for an All-Digital Telephone Answering Machine with Flash Memory Interface
中文描述: 芯片的全數(shù)字電話應(yīng)答機與快閃記憶體介面
文件頁數(shù): 44/117頁
文件大?。?/td> 551K
代理商: D6571E
D6571E Data Sheet
DS6571E.2
DSP GROUP, INC., 3120 SCOTT BOULEVARD
SANTA CLARA, CA 95054 PH: 408 986-4300 FAX: 408 986-4490
42
6. TONE GENERATION
Command:
0110
0 0
0
MASTER GAIN
TONE INDEX
(15-12)
TONE INDEX
MASTER GAIN
Where GainX (X=0,1) has either the default value (for indexes 0 to C) or a value defined by a New Tone Definition
command (indexes from D to 1F). The default value of Gain0 is 1 and the default value of Gain1 is 0.
To continue to generate the same tone and monitor the line, the same command should be issued every frame. To change
either tone or gain on the fly, a new TONE INDEX or a MASTER GAIN should be sent in the command. An IDLE
command terminates Tone Generation mode.
Status:
0110
0 0 0 0 0 0 0
(11 - 10)
(9) (8-5)
(4-0)
- defines the Tone Index to be generated according to the table mentioned above.
- defines the master gain of this tone. The actual gain will be from -24 dB (gain code 1111) to +6
dB (gain code 0000). The gain code equals: 0 =< (GainX + MASTER GAIN)< =15
EXT
TONE
(5) (4)
TONE
DTMF
(3-0)
TONE
DTMF
EXT TONE }
In case of “warm start” 13 pre-defined tones (including 12 DTMF tones) can be generated from the table provided in the
D6571E. The remaining 19 entries are user defined and may be programmed one time. See “New Tone Initialization” below.
“Warm Start” table
Tone Index
DTMF code
0
No Tone
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
A
*
B
0
C
#
D - 1F
User Defined Tones
(15-12)
(11-6)
= 1:
Call Progress Tone detected.
} :
Code of Valid DTMF signal detected.
Freq 0
697
697
697
770
770
770
852
852
852
941
941
941
Freq 1
1209
1336
1477
1209
1336
1477
1209
1336
1477
1209
1336
1477
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