FX579 Datasheet, PDF (1/23 Pages) CML Microcircuits – HALF DUPLEX GMSK MODEM

CML Semiconductor Products
Half Duplex GMSK Modem FX579
1.0 Features
• Half Duplex GMSK Modem for FM
Radio Data Links
• Acquire Pin to assist with the
acquisition of Rx Data signals
• Pin-Programmable Rx/Tx Data
Rates:
4k to 20 kbits/sec at V_DD = 3.0V
4k to 40 kbits/sec at V_DD = 5.0V
• Serial Data Interface with Rx/Tx
Data Clock
D/579/4 Sept 1995
Provisional Issue
• Low Operating Power:
< 2mA at 3.0V, < 4mA at 5.0V
Non-DSP solution
• Telemetry, Wireless Alarms,
PC, Laptop and Printer Comms,
WAN and LAN and General
Purpose Data Applications
• 16-Pin Package with few
External Components
• Low Cost
1.1 Brief Description
The FX579 is a single chip, low cost, low current integrated circuit that performs the baseband
functions of a half duplex GMSK modem and is intended for use in FM radio data links. This general
purpose modem is suitable for data rates in the region of 4 to 40 kbits/sec, at a BT of 0.3 or 0.5.
The Tx and Rx data lines share a common pin and data is synchronised to a Tx/Rx data clock
generated by the modem. A single ACQUIRE line is provided to assist with acquisition of Rx data
signals.
© 1996 Consumer Microcircuits Limited