GatesAir PTR-255 Program Audio Codec Module
Intraplex Products Issue 2.1, February 2006
TABLE OF CONTENTS
1 Introduction .............................................................................................................................. 5
2 Functional Description ............................................................................................................. 6
2.1 Audio I/O ......................................................................................................................... 6
2.2 Analog Audio .................................................................................................................. 6
2.2.1 Programmable Gain ............................................................................................ 7
2.3 Digital Audio ................................................................................................................... 7
2.3.1 AES/EBU Channel Status ................................................................................... 7
2.3.1.1 AES/EBU Consumer Format ................................................................................. 8
2.3.1.2 AES/EBU Professional Format .............................................................................. 9
2.4 Audio Coding Options ................................................................................................. 11
2.4.1 MPEG Coding .................................................................................................... 11
2.4.2 G.722 Coding ...................................................................................................... 13
2.5 Auxiliary Data Channel ............................................................................................... 14
2.6 Inverse Multiplexing .................................................................................................... 14
2.7 Receive-Only Operation .............................................................................................. 14
2.8 Contact Closure Option ............................................................................................... 14
2.9 Alerts/Alarms ................................................................................................................ 14
2.10 Drop and Insert Operation .......................................................................................... 15
3 Card Configuration ................................................................................................................ 16
3.1 Audio Configuration Settings – SW3 (Rx) and SW5 (Tx) ........................................ 16
3.1.1 Audio Algorithm Selection ................................................................................ 18
3.1.2 Audio Mode Selection ........................................................................................ 18
3.1.3 Sample Rate Selection ....................................................................................... 19
3.1.4 Data Rate Selection ............................................................................................ 20
3.2 Multiplexer Interface Settings: SW11 ........................................................................ 20
3.3 Card Address Setting: SW10 ...................................................................................... 21
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