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參數(shù)資料
| 型號(hào)： | 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(jī)與快閃記憶體介面 |
| 文件頁數(shù)： | 80/117頁 |
| 文件大?。?/td> | 551K |
| 代理商： | D6571E |
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D6571E Data Sheet
DS6571E.2
DSP GROUP, INC., 3120 SCOTT BOULEVARD
SANTA CLARA, CA 95054 PH: 408 986-4300 FAX: 408 986-4490
78
DT:
DT defines the threshold for the Dial Tone detector. Level below the threshold is considered noise and would not be
detected.
LINE TRAINING TYPE:
= 00:
Reserved
= 01:
White noise injected into the line (250 msec duration)
= 10:
Reserved
= 11:
Voice adaptation
(default)
By default the DSP is in voice adaptation mode. White noise can be injected to the line, after the noise pulse the DSP
automatically returns to voice adaptation mode.
Automatic LOOP Adjustment: = 00:
Reserved
= 01:
Reserved
= 10:
Automatic loop adjustment
(default)
= 11:
Reserved
The automatic loop adjustment mode is the default and is the only mode available.
Status:
1110
010
0
Twist
DT
= 00:
= 01:
= 10:
= 11:
800 (6 dB less sensitive than default)
400
(default)
300 (3 dB more sensitive than default)
200 (6 dB more sensitive than default)
Line
Training Type
(3-2)
Automatic
Loop Adjustment
(1-0)
(15-12)
MODE = 011: (Set SpeakerPhone Configuration 2)
Command:
1110
011
0
(11-9)
(8) (7-6) (5-4)
Speaker
Noise
Line
Noise
(6)
Line
Process
(5)
Mic VOX
position
(4) (3-2)
Mic VOX
Response
Line VOX
Response
(15-12)
Speaker Noise:
When the Speaker Noise bit is set, a white noise pulse of duration 250 msec is injected into the speaker. After the pulse
the DSP automatically returns to the adaptation mode of the AEC.
Line Noise:
= 0: Off
(default)
= 1: On
When the Line Noise bit is set, a white noise pulse of duration 250 msec is injected into the line. (This is equivalent to Line
Training Type 1 in the SpeakerPhone Configuration Command). After the pulse the DSP automatically returns to the
adaptation mode of the LEC.
Line Processing:
= 0: Off
(default)
= 1: On
(11-9)
(8) (7)
(1-0)
= 0: Off
(default)
= 1: On
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