CMX867E2 View Datasheet(PDF) - CML Microsystems Plc
Part Name
Description
MFG CO.
'CMX867E2' PDF : 45 Pages View PDF
Low Power V.22 Modem
CMX867
Transmit DPSK Modes
(V.22 and Bell 212A)
Carrier frequency, high band
Carrier frequency, low band
Baud rate
Bit rate
550Hz guard tone frequency
550Hz guard tone level wrt data signal
1800Hz guard tone frequency
1800Hz guard tone level wrt data signal
Notes Min.
5
-
5
-
6
-
6
-
548
-4.0
1797
-7.0
Typ.
2400
1200
600
1200/600
550
-3.0
1800
-6.0
Max.
-
-
-
-
552
-2.0
1803
-5.0
Units
Hz
Hz
Baud
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
6
Min.
-
1647
1847
978
1178
Typ.
300
1650
1850
980
1180
Max.
-
1653
1853
982
1182
Units
Baud
Hz
Hz
Hz
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
6
Min.
-
2222
2022
1268
1068
Typ.
300
2225
2025
1270
1070
Max.
-
2228
2028
1272
1072
Units
Baud
Hz
Hz
Hz
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
6
Min.
-
1298
2097
389
449
Typ.
1200/75
1300
2100
390
450
Max.
-
1302
2103
391
451
Units
Baud
Hz
Hz
Hz
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
6
Min.
-
1198
2197
386
486
Typ.
1200/150
1200
2200
387
487
Max.
-
1202
2203
388
488
Units
Baud
Hz
Hz
Hz
Hz
DTMF/Single Tone Transmit
Tone frequency accuracy
Distortion
Notes
7
Min.
-0.2
-
Typ.
-
1.0
Max.
+0.2
2.0
Units
%
%
Notes:
5. % carrier frequency accuracy is the same as XTAL/CLOCK % frequency accuracy.
6. Tx signal % baud or bit rate accuracy is the same as XTAL/CLOCK % frequency
accuracy.
7. Measured between TXA and TXAN pins with Tx Level Control gain set to 0dB, 1k2Ω load
between TXA and TXAN, at VDD = 3.0V (levels are proportional to VDD - see section
1.4.2). Level measurements for all modem modes are performed with random
transmitted data and without any guard tone. 0dBm = 775mVrms.
© 2004 Consumer Microcircuits Limited
40
D/867/5
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