AIS Baseband Processor
CMX910
Transmit Parameters
AIS (GFSK 9600bps), 12.5kHz channel
Bit rate accuracy
Notes
Min.
Typ.
Max.
Unit
-
-
-
-
-
±50
ppm
BT
0.3
0.25
TBD
-
-
-
Modulation index
Storage time
3
symbol
ppm
AIS (GMSK 9600bps), 25kHz channel
Bit rate accuracy
BT
Modulation index
Storage time
-
-
-
-
-
±50
0.4
0. 5
TBD
-
-
-
3
3
symbol
DSC (FSK 1200bps, 6dB/octave pre-emphasis)
Bit rate accuracy
Sub-carrier
Tx mark frequency
Tx space frequency
Modulation index
-
-
-
-
-
-
-
±50
ppm
Hz
Hz
1700
1300
2100
2
-
-
-
-
-
Hz
Storage time
TBD
symbol
Tx DAC
Resolution
-
-
14
-
-
-70
-
-
±2
±2
bits
LSB
LSB
dB
mV
dB
Integral accuracy
Differential accuracy
SINAD
-
-65
-
-
-
4
5
-
Offset
±20
±0.25
±0.5
2.2
Gain matching, I to Q
Phase matching, I to Q
I, Q output level
-
-
degree
V
2.0
2.1
© 2009 CML Microsystems Plc
56
D/910/6
CMLMICRO [ CML MICROCIRCUITS ]
