Digital Voice Systems VC-20-ATC-10B Especificaciones descargar pdf (Pagina 63)

FAA20 Embedded NEXCOM Vocoder

Board Manual

This manual has been prepared for the Federal Aviation Administration.

FA100-00107 (March 2004) – Rev 1.0.0 Page 57

8.0 TERMINAL COMMAND REFERENCE

This section provides FAA20 terminal command information. The following

topics are included:

• Command Overview. Describes general usage information and a

command list.

• Built-in Help. Describes how to access and use the built-in help

feature.

• Command Reference. Provides detailed syntax and operating

information for each of the FAA20 commands.

8.1 Command Overview

The FAA20 accepts commands via the serial RS-232 ports or via the virtual

command port (supported over the nibble interface). Commands are

available to control unit clocking, truncation mode, and the routing of

compressed and linear audio. A number of commands are also available to

support troubleshooting and software upgrades.

Table 10 provides a brief description of the available commands. The more

frequently used commands are indicated with a check. After configuration,

the FAA20 operates without any additional terminal control and can be

deeply embedded into host systems.

Table 10: FAA20 Command Summary

COMMAND TYP* DESCRIPTION OR USE

ADAPT

Enables/disables the rate adapter during truncated timing

mode.

BIT

Sets/gets state of control bits.

CFG

Saves/Restores configuration parameters to/from flash

memory.

CLKDET Prints the detected symbol rates for the internal codec, the

PCM interface and the NIB interface.

CLKRATE

Sets/gets the normal/truncated clock rates for the PCM and

NIB interfaces.

CLKREF

Sets/gets the interface used to control linear voice processing.

CLKSRC

Sets/gets clock source (internal or external) for the PCM and

NIB interfaces.

COMCFG

Sets/gets communication parameters (baud, start bits, stops

bits, parity, etc) for the two serial RS-232 ports. Note: The

virtual COM port has fixed characteristics.

COMECHO Controls the echo of typed characters for the three command

ports.

COMPROMPT Controls the printing of the prompt for the three command

ports.

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