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)： 114/117頁
文件大小： 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
109
DETECTORS CHARACTERISTICS
DTMF & VOX CHARACTERISTICS
PARAMETER
DTMF Signal level for detection*
DTMF Twist (High/Low Tone)
DTMF Frequency Detect Band width
MIN
-35
±
(1.5%
+ 2Hz)
40
40
-37
-0.1
-24
-0.5
TYP
MAX
0
+4/-8
3.5%
UNIT
dB0
dB
%fc
DTMF Noise tolerance**
DTMF tone duration accept
DTMF tone duration reject
DTMF interdigit pause accept
DTMF interdigit pause reject
VOX detection*
Tone generator frequency accuracy
Tone generator level***
Tone generator level accuracy
Call Progress Tone Detector Performance
PARAMETER
Detection Level*
Rejection Level*
Rejection Frequency Range
Frequency Range
Signal Duration Accept
Pause Duration Accept
Response Time
Noise Tolerance
*0.707 V RMS is defined as the 0 dB0
**BW limited (0-3.0 KHz) Gaussian noise
***0dB0 is 0.707V RMS programmable with resolution 2 dB.
Caller ID FSK Demodulator Performance
PARAMETER
MIN
Rate
of
Reception
Signal Level
Differential
Mark (Logic 1)
Bell 202
V.23
1287 Hz
Space (logic 0)
Bell 202
V.23
2079 Hz
Received Signal
Level (Mark)
Received Signal
Level (Space)
Signal to
Distortion Ratio
+12
23
23
+6
+0.1
+6
+0.5
dB
ms
ms
ms
ms
dB0
%fc
dB0
dB
MIN
-29
800
300
80
80
-12
TYP
MAX
-34
2500
640
150
UNIT
dB0
dB0
Hz
Hz
ms
ms
ms
dB
TYP
MAX
COMMENTS
1200 bps
±
12
bps
±
10 dB
1188 Hz
1200
±
12 Hz
1300
±
13 Hz
2200
±
22 Hz
2100
±
21 Hz
1212 Hz
1313 Hz
2222 Hz
2121 Hz
-12 dBm
2187 Hz
-32 dBm
-36 dBm
-12 dBm
≥
25 dB
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