User's Manual

SC14CVMDECT Cordless Voice Module
© 2011 SiTel Semiconductor B.V. Company Confidential 8 August 19, 2011 v1.2.1
2.0 Introduction
2.1 SCOPE
The SC14CVMDECT is a programmable DECT
module for voice and low data rate services. The
internal software-stack receives commands and data
from the application, for instance to setup a link to
other modules. The user interface can be implemented
on the module itself or on anexternal host processor.
The internal FLASH provides user space where
custom applications can be located. The module
converts analog signals to a digital stream,
compresses/decompresses them according to the
DECT standards and transmits/receives them over the
air interface. The DECT protocol-stack in each module
supports both PP and FP functionality.
2.2 ORDERING INFORMATION
SC14CVMDECT AF01
2.3 REFERENCES
1. SC14CVMDECT AT Commands
2. SC14CVMDECT AT Commands
Communication Library
3. SC14CVMDECT_PC_MMI_User_Guide
4. Athena User Manual
2.4 GLOSSARY AND DEFINITIONS
API Application Programming Interface
AT Command Interface
The software interface between the
MCU and SC14CVMDECT
CAT iq Cordless Advanced Technology, Internet
and Quality
Codec Coder and DeCoder converts analog
signals to digital signals and vice versa.
Conference Same as intercom, but generally
including an external party.
CRC Cyclic Redundancy Check
CVM Cordless Voice Module
DECT Digital Enhanced Cordless Telephone
DSP Digital Signal Processor
EC Echo Canceller
EMC Equipment Manufacturer’s Code (please
refer to ETSI EN 300 175-6)
ESD Electro Static Discharge
EQ Equalizer
FP Fixed Part
GFSK Gaussian Frequency Shift Keying
HW Hardware
Inband tones Tones played by the application itself
and not from external e.g. line.
Intercom Internal call between 2 or more parties.
IPEI International Portable Equipment Identity
(please refer to ETSI EN 300 175-6)
IWU InterWorking Unit (please refer to ETSI
EN 300 175-1)
LCD Liquid Crystal Display
LDR Low Data Rate
MCU Micro Controller Unit
MMI Man Machine Interface (keypad, LCD,
buzzer, microphone, earpiece, speaker,
headset)
NTP Nominal Transmit Power
PAEC Perceptual Acoustic Echo Canceller
PC Personal Computer, IBM compatible
PCB Printed Circuit Board without
components
PP Portable Part
PSTN Public Switched Telephone Network
POTS Plain Old Telephone System
RF Radio Frequency
RFPI Radio Fixed Part Identity (please refer to
ETSI EN 300 175-6)
RLR Receive Loudness Rating
RSSI Radio Signal Strength Indication (please
refer to ETSI EN 300 175-1)
Sidetone Feedback of microphone signal to
earpiece.
SLR Sending Loudness Rating
SPI Serial Periphelal Interface Bus
SW Software
UART Universal Asynchronous Receiver and
Transmitter.
VAD Voice Activity Detection
Walky Talky Two PPs connected without an FP