1.0 Functional Description
RC224ATL/224ATLV
1.2 Technical Specifications
EmbeddedModem Family
1.2.2 Configurations and Rates
The supported modem configurations and signaling rates are listed in Table 1-1.
In data modes with serial interface selected, DTE rate offsets of + 1%, – 2.5% are
accommodated by adding/deleting stop bits as required. In fax modes, the DTE
rate is 19,200 bps.
Table 1-1. Configurations and Rates
Transmitter Carrier
Frequency (Hz) ± 0.01%
Data Rate
(bps)
Baud
(Symbols/Sec.)
Bits Per Constellation
Configuration
Modulation
Symbol
Points
Data Mode
V.22 bis
V.22
Answer
2400
2400
2400
2225 M
Originate
1200
1200
1200
1270 M
QAM
DPSK
DPSK
FSK
2400
1200
1200
300
600
600
600
300
4
2
2
1
16
4
4
Bell 212A
Bell 103
1
2025 S
1070 S
Fax Mode
Receive
N/A
N/A
1800
1800
Transmit
1700
1700
1800
1800
V.29
QAM
QAM
DPSK
DPSK
FSK
9600
7200
4800
2400
300
2400
2400
1600
1200
300
4
3
3
2
1
16
8
8
4
1
V.27 ter
V.21
1650 M
1650 M
1850 S
1850 S
Legend:
QAM
DPSK
FSK
M
Quadrature Amplitude Modulation
Differential Phase Shift Keying
Frequency Shift Keying
Mark condition
S
Space Condition
N/A
Not Applicable
1-2
Conexant
D224ATLVDSC
CONEXANT [ CONEXANT SYSTEMS, INC ]
