Low Power V.22 bis Modem
CMX868
XTAL/CLOCK Input
(timings for an external clock input)
'High' Pulse Width
'Low' Pulse Width
Notes
Notes
Min.
Typ.
Max.
Units
30
30
–
–
–
–
ns
ns
Transmit QAM and DPSK Modes
(V.22, Bell 212A, V.22 bis)
Carrier frequency, high band
Carrier frequency, low band
Baud rate
Bit rate (V.22, Bell 212A)
Bit rate (V.22 bis)
550Hz guard tone frequency
550Hz guard tone level wrt data signal
1800Hz guard tone frequency
1800Hz guard tone level wrt data signal
Min.
Typ.
Max.
Units
5
5
6
6
6
–
–
–
–
–
548
-4.0
1797
-7.0
2400
1200
600
1200/600
2400
550
-3.0
1800
-6.0
–
–
–
–
–
552
-2.0
1803
-5.0
Hz
Hz
Baud
bps
bps
Hz
dB
Hz
dB
Transmit V.21 FSK Mode
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.
–
1647
1847
978
Typ.
300
1650
1850
980
Max.
–
1653
1853
982
Units
Baud
Hz
Hz
Hz
6
1178
1180
1182
Hz
Transmit Bell 103 FSK Mode
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.
–
2222
2022
1268
1068
Typ.
300
2225
2025
1270
1070
Max.
–
2228
2028
1272
1072
Units
Baud
Hz
Hz
Hz
6
Hz
Transmit V.23 FSK Mode
Baud rate
Mark (logical 1) frequency, 1200 baud
Space (logical 0) frequency, 1200 baud
Mark (logical 1) frequency, 75 baud
Space (logical 0) frequency, 75 baud
Notes
Min.
–
1298
2097
389
449
Typ.
1200/75
1300
2100
390
Max.
–
1302
2103
391
451
Units
Baud
Hz
Hz
Hz
6
450
Hz
Transmit Bell 202 FSK Mode
Baud rate
Mark (logical 1) frequency, 1200 baud
Space (logical 0) frequency, 1200 baud
Mark (logical 1) frequency, 150 baud
Space (logical 0) frequency, 150 baud
Notes
Min.
–
1198
2197
386
486
Typ.
1200/150
1200
2200
387
Max.
–
1202
2203
388
488
Units
Baud
Hz
Hz
Hz
6
487
Hz
DTMF/Single Tone Transmit
Tone frequency accuracy
Distortion
Notes
Min.
-0.2
–
Typ.
–
1.0
Max.
+0.2
2.0
Units
%
%
7
ã 2004 CML Microsystems Plc
41
D/868/9
CMLMICRO [ CML MICROCIRCUITS ]
