CMX589AP4 View Datasheet(PDF) - MX-COM Inc
Part Name
Description
MFG CO.
'CMX589AP4' PDF : 21 Pages View PDF
DATA BULLETIN
CMX589A
HIGH-SPEED
GMSK MODEM
PRELIMINARY INFORMATION
Features
Data Rates from 4kbps to 200kbps
Full or Half Duplex Gaussian Filter & Data Recovery
for Minimum Shift Keying (GMSK) Designs
Selectable BT: (0.3 or 0.5)
Low Power
3.0V, 20kbps, 1.5mA typ.
5.0V, 64kbps, 4.0mA typ.
Low Current Non-DSP Solution
Small TSSOP size fits PCMCIA / PC CARDs
Applications
Portable Wireless Data Applications
Cellular Digital Packet Data (CDPD)
Mobitex Mobile Data System
Spread Spectrum Data Links
GPS/Differential GPS Wireless Links
Point of Sale Terminals
Low Power Wireless Data Link for PCs,
Laptops, and Printers
TX ENABLE
TX PS
TX DATA
XTAL/CLOCK
XTAL
ClkDIVA
ClkDIVB
BT
VDD
RXHold
PLLacq
RXDCacq
DATA RETIME &
LEVEL SHIFT
CLOCK
DIVIDER
RX CIRCUIT
CONTROL
VBIAS
TX
FILTER
RX DATA
DETECTION
RX S/N
DETECTION
VBIAS
TX OUT
TX CLK
RX DATA
RX S/N
RX CLOCK
RX CLK
RX PS
RX SIGNAL IN
RX FEEDBACK
VBIAS
+
-
VSS
RX
RX DC LEVEL
VBIAS
FILTER
MEASURE
DOC1
DOC2
The CMX589A is a single-chip synchronous data pump/modem designed for Wireless Data Applications.
Employing Gaussian filtering for Minimum shift Keying (GMSK) baseband modulation applications, the
CMX589A features a wide range of available data rates from 4k to 200kbps. Data Rates and the choice of BT
(0.3 or 0.5) are pin programmable to provide for different system requirements.
The Tx and Rx digital data interfaces are bit serial, synchronized to generated Tx and Rx data clocks.
Separate Tx and Rx Powersave inputs allow full or half-duplex operation. Rx input levels can be set by
suitable AC and DC level adjusting circuitry built with external components around an on-chip Rx Input
Amplifier.
Acquisition, Lock, and Hold of Rx data signals are made easier and faster by the use of Rx Control Inputs to
clamp, detect, and /or hold input data levels and can be set by the Processor as required. The Rx S/N
output provides an indication of the quality of the received signal.
The CMX589A may be used with a 3.0V to 5.5V power supply and is available in the following packages:
24-pin TSSOP (CMX589AE2), 24-pin SSOP (CMX589AD5), 24-pin SOIC (CMX589AD2), and 24-pin PDIP
(CMX589AP4).
1998 MX-COM, Inc.
www.mxcom.com Tele: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. # 20480183.002
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
All trademarks and service marks are held by their respective companies.
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