Brief Description
The FX604 is a low power CMOS integrated circuit for the reception or transmission of asynchronous 1200bits/sec data in accordance with CCITT V.23 and ETSI specifications. It is also capable of generating the 75bits/sec 'back channel'.
The device incorporates an optional Tx and Rx data retiming function that removes the need for a UART in the associated mC when operating at 1200bits/sec. The device can disable the back channel or be operated so only the mark or space tone is produced. An optional line equaliser is incorporated into the receive path, this is controlled by an external logic level.

FEATUREs
· 1200/75 bits/sec Full Duplex V23 compatible Modem with:
· Optional 75bits/sec Back Channel
· Optional Line Equalisation
· Optional 1200bits/sec Data Retiming Facility
· -40°C to +85°C Operating Temperature
· 3.58MHz Xtal/Clock Rate · 16-pin SOIC and DIP Packages
· 3.0 to 5.5V Supply; 1.0mA typ. at 3V 'Zero-Power' Mode; 1mA typ.
· Conforms to relevant sections of V23 and ETSI specifications