Brief Description
The FX489 is a single-chip modem employing Gaussian Minimum Shift Keying (GMSK) modulation. Having a pin selectable BT of 0.3 or 0.5, the FX489 may be employed at data rates of between 4,000bits/s and 19,200bits/s; for use in FM radio-data links and data communication systems conforming to DOC and FCC spectrum limitations for 12.5kHz and 8,000 baud at a BT of 0.3, and 12.5, 25.0, and 50.kHz channel spacing and data rates of 4800, 9600 and 19,200 baud respectively at a BT of 0.5.

FEATUREs
● Full-Duplex Gaussian Minimum Shift Keying
● Selectable BT (0.3 or 0.5)
● Meets RAM - MOBITEX Specification
● Data Rates From 4000bits/s to 19200bits/s
● Serial Rx and Tx Data Interfaces
● Rx and Tx Data Clock Generation
● Rx Signal Tracking Controls
● Rx S/N Indication
● Separate Rx and Tx Powersave Inputs
● Wireless Modem, Radio Telemetry and Data Terminal Applications