CMX867D2 CML Microcircuits, CMX867D2 Datasheet - Page 41

• Manufacturer Part Number: CMX867D2
• Description: Low power V.22 modem
• Manufacturer: CML Microcircuits

Low Power V.22 Modem
Notes:
Rx Modem '0011' Dibit Pattern Detector
(1200bps DPSK mode)
Rx Modem Energy Detector
Rx Answer Tone Detectors
Rx Call Progress Energy Detector
2001 Consumer Microcircuits Limited
Detect (‘Off’ to ‘On’) response time
Will detect pattern lasting for
Will not detect pattern lasting for
Hold time (minimum detector ‘On’ time)
Detect threshold (‘Off’ to ‘On)
Undetect threshold (‘On’ to ‘Off’)
Hysteresis
Undetect (‘On’ to ‘Off’) response time
Detect threshold (‘Off’ to ‘On)
Undetect threshold (‘On’ to ‘Off’)
Hysteresis
Detect (‘Off’ to ‘On’) response time
Undetect (‘On’ to ‘Off’) response time
2100Hz detector
2225Hz detector
Bandwidth (-3dB points) See Figure 6a
Detect threshold (‘Off’ to ‘On)
Undetect threshold (‘On’ to ‘Off’)
Hysteresis
Detect (‘Off’ to ‘On’) response time
Undetect (‘On’ to ‘Off’) response time
DPSK modes
300 and 1200 baud FSK modes
150 and 75 baud FSK modes
DPSK modes
300 and 1200 baud FSK modes
150 and 75 baud FSK modes
‘Will detect’ frequency
‘Will not detect’ frequency
‘Will detect’ frequency
‘Will not detect’ frequency
11. Thresholds and times measured with random data for DPSK modes, continuous binary
12. ‘Typical’ value refers to 2100Hz or 2225Hz signal switched between off and -33dBm.
13. ‘Typical’ values refers to 400Hz signal switched between off and -33dBm
‘1’ for all FSK modes. Fixed compromise line equaliser enabled. Signal switched
between off and -33dBm
Times measured wrt. received line signal
41
Notes
Notes
Notes
Notes
10,11
10,11
10,11
10,11
10,11
10,11
10,11
10,11
10,11
10,12
10,12
10,12
10,12
10,12
10,13
10,13
10,13
10,13
10,13
-48.0
-48.0
-42.0
2050
2160
2335
Min.
Min.
Min.
Min.
90.0
10.0
16.0
10.0
10.0
20.0
30.0
30.0
275
5.0
2.0
8.0
2.0
7.0
2.0
6.0
-
-
-
-
Typ.
Typ.
Typ.
Typ.
33.0
18.0
36.0
8.0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Max.
Max.
-43.0
Max.
-43.0
Max.
-37.0
2160
2000
2285
72.0
35.0
30.0
60.0
55.0
40.0
80.0
45.0
25.0
45.0
50.0
665
-
-
-
-
-
-
-
-
-
CMX867
Units
Units
Units
Units
D/867/2
dBm
dBm
dBm
dBm
dBm
dBm
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
dB
dB
Hz
Hz
Hz
Hz
Hz
dB