Annex
1 Format for user data channel of the
digital audio interface
1 Introduction
2 Scope
3 General
3.4 Main features
3.4.1 Messages
3.4.2 Multiplexing
3.4.3 Bit rate
3.4.4 Synchronization
3.4.5 Error detection
3.4.6 Efficiency
4 Terminology
4.1 Transport system
4.2 Address
4.3 Address – Extension
4.4 Block
4.5 Continuity index
4.6 Control byte
4.7 Cyclic redundancy check code (CRCC)
4.8 Frame check sequence (FCS)
4.9 High level data link control (HDLC)
4.10 Frame level
4.11 HDLC frame
4.12 HDLC frame flag
4.13 Justification bits
4.14 Message level
4.15 A0. The least significant
bit (LSB) of a byte
4.16 A7. The most significant
bit (MSB) of a byte
4.17 Packet level
4.18 Physical level
4.19 Priority index
4.20 Repetition index
4.21 Segment
4.22 Message delimiters
5 Data formatting
5.1 The application level
5.1.1 Destination
address
5.1.2 Priority index
5.1.3 Message delimiters
5.1.4 Repetition index
5.1.5 Message
5.2 The transport system
5.2.1 The message level
Message header:
first byte (A7, MSB to A0, LSB)
Message header: second byte (A7, MSB to A0,
LSB) (optional)
5.2.2 Packet level
5.2.3 Frame level
5.2.4 Physical level
6 Channel management
6.1 Channel formatting
6.1.1 Block rate and
length
6.1.2 Block start
6.2 Channel description
6.2.1 System packet
6.3 Data insertion
6.3.1 Rules of
insertion
6.3.2 Priority
management