Low Power V.22 bis Modem
CMX868
1.5
General Description
The CMX868 transmit and receive operating modes are independently programmable.
The transmit mode can be set to any one of the following:
V.22 bis modem. 2400bps QAM (Quadrature Amplitude Modulation).
V.22 and Bell 212A modem. 1200 or 600 bps DPSK (Differential Phase Shift Keying).
V.21 modem. 300bps FSK (Frequency Shift Keying).
Bell 103 modem. 300bps FSK.
V.23 modem. 1200 or 75 bps FSK.
Bell 202 modem. 1200 or 150 bps FSK.
DTMF transmit.
Single tone transmit (from a range of modem calling, answer and other tone frequencies)
User programmed tone or tone pair transmit (programmable frequencies and levels)
Disabled.
The receive mode can be set to any one of the following:
V.22 bis modem. 2400bps QAM.
V.22 and Bell 212A modem. 1200 or 600 bps DPSK.
V.21 modem. 300bps FSK.
Bell 103 modem. 300 bps FSK.
V.23 modem. 1200 or 75 bps FSK.
Bell 202 modem. 1200 or 150 bps FSK.
DTMF detect.
2100Hz and 2225Hz answer tone detect.
Call progress signal detect.
User programmed tone or tone pair detect.
Disabled.
The CMX868 may also be set into a Powersave mode which disables all circuitry except for the C-BUS
interface and the Ring Detector.
ã 2004 CML Microsystems Plc
10
D/868/9
CMLMICRO [ CML MICROCIRCUITS ]
