Digital Voice Systems VC-20-ATC-10B Spezifikationen Seite 38
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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 32
BITNAME TYPE* DESCRIPTION
LATE_XFSE Test Late Encoder Frame Sync. Winks when the encoder
frame size exceeds the associated FRAMESIZE
quantity. Used for debugging the nibble interface.
LATE_XFSD Test Late Decoder Frame Sync. Winks when the decoder
frame size exceeds the associated FRAMESIZE
quantity. Used for debugging the nibble interface.
LATE_NFS Test Spare Virtual LED. Not Used.
LAUDTXP Audio Transmit Audio Peak.
LAUDTXA Audio Transmit Audio Activity.
LAUDRXP Audio Receive Audio Peak.
LAUDRXA Audio Receive Audio Activity.
LPCMTXP Audio Transmit PCM Peak.
LPCMTXA Audio Transmit PCM Activity.
LPCMRXP Audio Receive PCM Peak.
LPCMRXA Audio Receive PCM Activity.
LVOCTXP Audio Transmit Vocoder Peak.
LVOCTXA Audio Transmit Vocoder Activity.
LVOCRXP Audio Receive Vocoder Peak.
LVOCRXA Audio Receive Vocoder Activity.
LCOMTXP Audio Transmit COM (serial port) Peak.
LCOMTXA Audio Transmit COM (serial port) Activity.
LCOMRXP Audio Receive COM (serial port) Peak.
LCOMRXA Audio Receive COM (serial port) Activity.
LANYPL Audio Any Voice Signal Peak (Latched). This indicator
latches to the on state when a peak is detected at any
voice signal interface (AUD, PCM, VOC, TON, or
COM).
LANYP Audio Any Voice Signal Peak.
LANYA Audio Any Voice Signal Activity
VAD General Vocoder Voice Activity Detector. Lights when voice is
detected at the encoder and the encoder is running –
OR—when voice is detected at the decoder and the
decoder is running..
RUN General Run-time Task Indicator. Blinks at a rate that indicates
overall processor loading. Faster blinking indicates
lighter loading.
ERR General Error LED. Lights during error conditions and winks for
sample and packet add/drop events.
Some indicators are static and others are dynamic. For example, the
TRUN indicator is statically lit when the FAA20 enters truncated timing
mode and the LANYP indicator is dynamically winked (briefly lit for a 100
ms period) when a peak event is detected.
The LED assignments are saved in flash configuration memory by the CFG
command. To reassign the LEDs, see Section 8.3.20.
- FA100-00107 1
- BOARD MANUAL 1
- Board Manual 2
- 1.0 INTRODUCTION 7
- 2.0 GENERAL DESCRIPTION 9
- 2.2 Features 10
- 3.1 Main Signal Connector 11
- Table 1: DIN Signals 12
- 3.2 Terminal Connectors 15
- 3.3 Audio Connectors 16
- 3.4 LED Indicators 17
- 3.5 Switch Controls 18
- 4.0 INSTALLATION 19
- 4.3.1 Timing Configuration 20
- 5.0 FUNCTIONAL DESCRIPTION 23
- 5.1.3 DEMO Mode 24
- 5.2 Interfaces 25
- 5.2.3 NIB Interface 26
- 5.3 Voice Processing 28
- PACKET VOICE ROUTER 31
- 5.4.1 Truncated Timing Mode 34
- 5.4.2 Voice Delay 35
- 5.4.3 Programmable LEDs 37
- 5.4.4 Command Processor 39
- 6.1 Hardware Architecture 40
- 6.1.2 Memory Maps 42
- Figure 17: Data Memory Map 43
- Figure 19: Flash Memory Map 44
- 6.2 Software Architecture 45
- Table 8: Thread List 47
- 7.0 MAINTENANCE AND TEST 50
- 7.2.1 Audio Tools 52
- 7.2.2 Nibble Tools 54
- 7.2.3 PCM Tools 54
- 7.3.1 Standard Mode Upgrade 55
- 7.4.1 Test Vector Execution 59
- 7.4.2 DAT2LIN Utility 61
- 7.4.3 BIT2CMP Utility 62
- 8.1 Command Overview 63
- 8.2 Built-In Help 65
- 8.3 Command Reference 66
- 8.3.1 ADAPT 67
- 8.3.2 BIT 68
- Latched 70
- 8.3.3 CFG 71
- 8.3.4 CLKDET 73
- 8.3.5 CLKRATE 74
- 8.3.6 CLKREF 76
- 8.3.7 CLKSRC 77
- 8.3.8 COMCFG 78
- 8.3.9 COMECHO 79
- 8.3.10 COMPROMPT 80
- 8.3.11 COUNT 81
- 8.3.12 DELAY 83
- 8.3.13 DM 84
- 8.3.14 DUMP 85
- 8.3.15 FLASH 86
- 8.3.16 FM 87
- 8.3.17 FRAMESIZE 88
- 8.3.18 GAM 89
- 8.3.19 IO 90
- 8.3.20 LED 91
- 8.3.21 LOOP 92
- 8.3.22 MACRO 93
- 8.3.23 MCBSP 94
- 8.3.24 MIX 95
- 8.3.25 OPMODE 96
- 8.3.26 PROG 97
- 8.3.27 REM 98
- 8.3.28 RESET 99
- 8.3.29 ROUTE 100
- 8.3.30 TEST 101
- 8.3.31 TONE 103
- 8.3.32 TRUN 104
- 8.3.33 VERSION 105
- 8.3.34 VOC 106
- 8.3.35 WAIT 108
- 9.0 GLOSSARY 109
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