MC33410 Datasheet, PDF (1/20 Pages) Motorola, Inc – DUAL CVSD/PLL CORDLESS PHONE SYSTEM

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Dual CVSD/PLL Cordless
Phone System
The MC33410 Dual CVSD/Cordless Phone system is designed to fit the
requirements of a 900 MHz digital cordless telephone system. The device
contains a CVSD (Continuously Variable Slope Delta
Modulator/Demodulator) Encoder to digitize the speech for the RF
transmission, and a CVSD Decoder to reconstruct the received digital
speech from the RF receiver. Provisions are made to transmit and receive
data as well. Included are three PLLs (Phase–Locked Loops). Two are
intended for use with external VCOs and 64/65 or 128/129 dual modulus
prescalers, and can control the transmit and receive (LO1) frequencies for
the 900 MHz communication. The third PLL is configured as the 2nd local
oscillator (LO2), and is functional to 80 MHz. Also included are muting, audio
gain adjust (internal and external), low battery/carrier detect, and a wide
range for the PLL reference frequency. The power supply range is 2.7 to
5.5 V. A data only (non–voice) mode is also included.
• Two Complete CVSD Sections for Full Duplex Operation
• Two PLLs and an LO Suitable for a 900 MHz System
• Adjustable Detection for Low Battery or Carrier Signal (RSSI)
• Minimal External Components
• Encode Path Includes Adjustable Gain Amplifiers, Filters, Mute, CVSD
Encoder, Data Insert, and Scrambler
• Decoder Path Contains Data Slicer, Clock Recovery, Descrambler, Data
Detect, CVSD Decoder, Filters, Mute and Power Amplifier
• Data can be Transmitted During Voice Conversation with Minimal or No
Noticeable Audio Disruption
• Idle Channel Noise Control
• Independent Power Amplifier with Differential Outputs, Mute
• Selectable Frequency for Switched Capacitor Filters, CVSD Function,
PLLs, and the LO
• Reference Frequency Source can be a Crystal or System Clock
• Serial µP Port to Control Gain, Mute, Frequency Selection, Phase
Detector Gain, Power Down Modes, Idle Channel Control, Scrambler
Operation, Low Battery Detect, and Others
• Mode Available for Data Only Transmission (non–voice)
• Ambient Temperature Range: –40 to 85_C
• Power Supply Range: 2.7 to 5.5 V
• Power Down Modes for Power Conservation
• 48 Pin LQFP with 0.5 mm Lead Pitch
MC33410
DUAL CVSD/PLL
CORDLESS PHONE
SYSTEM
SEMICONDUCTOR
TECHNICAL DATA
FTA SUFFIX
PLASTIC PACKAGE
CASE 932
(LQFP–48)
ORDERING INFORMATION
Device
Operating
Temperature
Package
XC33410FTA
–40° to +85°C
LQFP–48
This document contains information on a product under development. Motorola reserves the
rig_Mht_Oto_Tc_Oha_Rn_Oge_Lo_Ar d_Risc_Fo_/n_It_Finu_De_Eth_Vis_ICpr_Eodu_Dc_At w_Tit_Ahout notice.
© Motorola, Inc. 1998
Rev 0
1