MX860D6 查看數據表（PDF） - MX-COM Inc
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MX860D6 Datasheet PDF : 36 Pages
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Telephone Signaling Transceiver
33
Rx Call Progress Energy Detector
Bandwidth (-3dB points) See Figure 9
Detect threshold (‘Off’ to ‘On)
Undetect threshold (‘On’ to ‘Off’)
Hysteresis
Detect (‘Off’ to ‘On’) response time
Undetect (‘On’ to ‘Off’) response time
DTMF Decoder
Valid input signal levels
(each tone of composite signal)
Not decode level
(either tone of composite signal)
Twist = High Tone/Low Tone
Frequency Detect Bandwidth
Max level of low frequency noise (i.e. dial tone)
Interfering signal frequency <= 550Hz
Interfering signal frequency <= 450Hz
Interfering signal frequency <= 200Hz
Max. noise level with respect to the signal
DTMF detect response time
DTMF de-response time
Status Register b5 high time
‘Will Detect’ DTMF signal duration
‘Will Not Detect’ DTMF signal duration
Pause length detected
Pause length ignored
Receive Input Amplifier
Input impedance (at 100Hz)
Open loop gain (at 100Hz)
Rx Gain Control Block accuracy
Notes
10,9
10,9
10,9
10,9
10,9
10
10
12
12
12
12,13
Min.
275
-
-42.0
2.0
30.0
6.0
-30.0
-
-10.0
±1.8
-
-
-
-
-
-
14.0
40.0
-
30.0
-
10.0
-0.25
CMX860 Advance Information
Typ.
Max.
Units
-
665
Hz
-
-37.0
dBm
-
-
dBm
-
-
dB
36.0
45.0
ms
8.0
50.0
ms
-
0.0
dBm
-
-36.0
dBm
-
6.0
dB
-
±3.5
%
-
0.0
dB
-
10.0
dB
-
20.0
dB
-
-10.0
dB
-
40.0
ms
-
30.0
ms
-
-
ms
-
-
ms
25.0
-
ms
-
-
ms
-
15.0
ms
MΩ
10000
V/V
+0.25
dB
Operating Characteristics Notes
1. At 25°C, not including any current drawn from the CMX860 pins by external circuitry other than X1, C1
and C2.
2. All logic inputs at DVSS except for RT and CS inputs, which are at DVDD.
3. General Mode Register b8 and b7 both set to 1.
4. Excluding RD, RT, HD and HT pins.
5. Tx signal % baud or bit rate accuracy is the same as XTAL/CLOCK % frequency accuracy.
6. Measured between LINETX+ and LINETX- or PHONETX+ and PHONETX- pins with Tx Level Control
gain set to 0dB, 1k2Ω load between the TX+ and TX- pins, at AVDD = 3.0V (levels are proportional to
AVDD - see Sections 3.3 and 3.4). Level measurements for all modem modes are performed with random
transmitted data and without any guard tone. 0dBm = 775mVRMS.
7. Measured on the 2-wire line using the line interface circuits described in Sections 3.3 and 3.4 with the Tx
line signal level set to -10dBm for FSK or single tones, -6dBm and -8dBm for DTMF tones. Excludes any
distortion due to external components required for line coupling.
¤2000 MX-COM, Inc.
www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054
Doc. # 20480222.001
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
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