CMX878 View Datasheet(PDF) - CML Microsystems Plc
Part Name
Description
Manufacturer
CMX878 Datasheet PDF : 61 Pages
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Line Powered Modem plus DAA
CMX878
Receive QAM and DPSK Modes
(V.22, Bell 212A, V.22bis)
Carrier frequency (high band)
Carrier frequency (low band)
Baud rate
Bit rate (V.22, Bell 212A)
Bit rate (V.22bis)
Notes
9
9
9
Min.
2392
1192
-
-
-
Typ.
2400
1200
600
1200/600
2400
Max. Units
2408
1208
-
-
-
Hz
Hz
Baud
bps
bps
Notes: 9. These are the bit and baud rates of the line signal, the acceptable tolerance is ±0.01%.
Receive V.21 FSK Mode
Acceptable baud rate
Mark (logical 1) frequency, high band
Space (logical 0) frequency, high band
Mark (logical 1) frequency, low band
Space (logical 0) frequency, low band
Notes
Min.
297
1638
1838
968
1168
Typ.
300
1650
1850
980
1180
Max.
303
1662
1862
992
1192
Units
Baud
Hz
Hz
Hz
Hz
Receive Bell 103 FSK Mode
Acceptable baud rate
Mark (logical 1) frequency, high band
Space (logical 0) frequency, high band
Mark (logical 1) frequency, low band
Space (logical 0) frequency, low band
Notes
Min.
297
2213
2013
1258
1058
Typ.
300
2225
2025
1270
1070
Max.
303
2237
2037
1282
1082
Units
Baud
Hz
Hz
Hz
Hz
Receive V.23 FSK Mode
1200 baud
Acceptable baud rate
Mark (logical 1) frequency
Space (logical 0) frequency
75 baud
Acceptable baud rate
Mark (logical 1) frequency
Space (logical 0) frequency
Notes
Min.
1188
1280
2080
74
382
442
Typ.
1200
1300
2100
75
390
450
Max. Units
1212
1320
2120
Baud
Hz
Hz
76 Baud
398
Hz
458
Hz
Receive Bell 202 FSK Mode
1200 baud
Acceptable baud rate
Mark (logical 1) frequency
Space (logical 0) frequency
150 baud
Acceptable baud rate
Mark (logical 1) frequency
Space (logical 0) frequency
Notes Min.
1188
1180
2180
148
377
477
Typ.
1200
1200
2200
150
387
487
Max. Units
1212
1220
2220
Baud
Hz
Hz
152 Baud
397
Hz
497
Hz
Rx Modem Signal
(FSK, DPSK and QAM Modes)
Signal level
Signal to Noise Ratio (noise flat 300-3400Hz)
Notes
10
Min.
-45
20
Typ.
-
-
Max. Units
-9 dBm
-
dB
© 2002 Consumer Microcircuits Limited
56
D/878/2
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