Gemalto M2M GmbH MC56 User Manual

MC55/56 Hardware Interface Description 
Confidential / Preliminary 

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MC55/56_hd_v03.00 

Page 10 of 104 

16.08.2005 

 

ADC 

Analog-to-Digital Converter 

AFC 

Automatic Frequency Control 

AGC 

Automatic Gain Control 

ANSI 

American National Standards Institute 

ARFCN 

Absolute Radio Frequency Channel Number 

ARP 

Antenna Reference Point 

ASC0 / ASC1  Asynchronous Serial Controller. Abbreviations used for first and second serial 

interface of MC55/56 

ASIC 

Application Specific Integrated Circuit 

B 

Thermistor Constant 

B2B 

Board-to-board connector 

BER 

Bit Error Rate 

BTS 

Base Transceiver Station 

CB or CBM 

Cell Broadcast Message 

CE 

Conformité Européene (European Conformity) 

CHAP 

Challenge Handshake Authentication Protocol 

CPU 

Central Processing Unit 

CS 

Coding Scheme 

CSD 

Circuit Switched Data 

CTS 

Clear to Send 

DAC 

Digital-to-Analog Converter 

DAI 

Digital Audio Interface 

dBm0 

Digital level, 3.14dBm0 corresponds to full scale, see ITU G.711, A-law 

DCE 

Data Communication Equipment (typically modems, e.g. Siemens GSM engine) 

DCS 1800 

Digital Cellular System, also referred to as PCN 

DRX 

Discontinuous Reception 

DSB 

Development Support Box 

DSP 

Digital Signal Processor 

DSR 

Data Set Ready 

DTE 

Data Terminal Equipment (typically computer, terminal, printer or, for example, GSM 
application) 

DTR 

Data Terminal Ready 

DTX 

Discontinuous Transmission 

EFR 

Enhanced Full Rate 

EGSM 

Enhanced GSM