MX609 Просмотр технического описания (PDF) - MX-COM Inc

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MX609

PCN/PCS DELTA MODULATION CODEC

MX-COM Inc  

DATA BULLETIN

MX609

PCN/PCS DELTA

MODULATION CODEC

Features

 Single Chip full Duplex CVSD CODEC

 On-chip Input and Output Filters

 Programmable Sampling Clocks

 3- or 4-bit Companding Algorithm

 Powersave Capabilities

 Low Power, 5.0V Operation

Applications

 Digital PCN/PCS Systems

 Digital Cordless Phones

 Digital Delay Lines

 Digital Voice Storage

 Multiplexers, Switches, and

Phones

 Time Domain Scramblers

DATA ENABLE

ENCODER FORCE IDLE*

ENCODER INPUT

VDD

VSS

XTAL/CLOCK

f1

XTAL

ENCODER DATA CLOCK

DECODER DATA CLOCK

VBIAS

MODE 1

MODE 2

CLOCK MODE

LOGIC

ALGORITHM

POWERSAVE

f3

DECODER INPUT

DEMOD

DECODER FORCE IDLE*

f0

CLOCK RATE

GENERATORS

MOD

ENCODER

OUTPUT

f2

SAMPLING RATE

CONTROL

3 or 4 BIT

f1

DECODER

OUTPUT

*Available on J,P & LH

package styles only

The MX609 is a Continuously Variable Slope Delta Modulation (CVSD) Codec designed for use in cordless

telephones. The device is suitable for applications in delta multiplexers, switches and phones. Encoder input

and decoder output switched capacitor filters are incorporated on-chip.

Sampling clock rates can be programmed to 16, 32 or 64K bits/second from an internal clock generator or

externally injected in the 8 to 64K bits/second range. The internal clocks are derived from an on-chip

reference oscillator driven by an externally connected crystal. The sampling clock frequency is output for the

synchronization of external circuits.

The encoder has an enable function for use in multiplexer applications. When not enabled the encoder output

remains in a high-impedance “tri-state” mode.

Companding circuits may be operated with an externally selectable 3- or 4-bit algorithm. The device may be

put in standby mode when Powersave is selected.

The MX609 operates with a supply voltage of 5.0V and is available in the following packages: 24-pin PLCC

(MX609LH), 16-pin SOIC (MX609DW), 22-pin CERDIP (MX609J), and 22-pin PDIP (MX609P).

1998 MX-COM, Inc.

www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054

Doc. # 20480069.005

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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