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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(jī)與快閃記憶體介面 |
| 文件頁數(shù)： | 81/117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
79
This option allows additional linear processing to reduce the far end residual echo by 6 dB.
Mic VOX Position:
=
0:
Mic VOX detector is before the volume compensater (compatible with the D6385A,
D6386A, D6455A)
= 1: Mic VOX detector is after the volume compensater
Line VOX Response:
= 00:
High Pass Filter
(default)
= 01:
Flat
= 10:
Reserved
= 11:
Reserved
Mic VOX Response:
= 00:
High Pass Filter
(default)
= 01:
Flat
= Else:
Reserved
Status:
1110
011
0
Speaker
Noise
Noise
(15-12)
(11-9)
(8) (7)
(6) (5)
MODE = 100: (Tone Generation)
Command:
1110
100
TONE GAIN
Line
Line
Process
Mic VOX
position
(4) (3-2)
Mic VOX
Response
(1-0)
Line VOX
Response
TONE INDEX
( 15-12) (11-9)
See the TONE GENERATION command for usage and TONE GAIN and TONE INDEX definitions.
Each command/status interaction generates a tone 1 frame long (33 ms for 7.2 kHz sampling rate and 30 ms for 8 kHz
sampling rate).
Tone Index:
0 - 16 (only 16 standard DTMF tones are available in the SpeakerPhone mode)
Only the tones from the “standard” tone table are available in SpeakerPhone mode. No tones, defined by New Tone
Definition command, are available in SpeakerPhone mode. Gain of these tones is defined by the TONE GAIN parameter.
Twist is defined by Twist Parameter (SpeakerPhone Configuration command).
Status:
1110
100
TONE GAIN
(8-5)
(4-0)
TONE INDEX
(15-12) (11-9)
MODE = 101: (Set SpeakerPhone Parameters 2)
The Set SpeakerPhone Parameters 2 Command (Mode 101) allows additional control over the range for the Loop
Attenuation, Speaker Volume, Line Volume, and T/R and R/T ratios. If extended range is not a requirement, the Set
SpeakerPhone Parameters Command (Mode 001) can be used rather than this command. This command also introduces the
Acoustical Decoupling and Electrical Decoupling parameters.
(8-5)
(4-0)
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