IEC 61030:1991

FOREWORD
1 Scope and main features of the Domestic Digital
   Bus (D2B)
2 Normative references
3 Definitions and abbreviations
   3.1 Definitions
   3.2 Abbreviations
4 Modes
5 Main transmission features of D2B
   5.1 Communication-related functions
   5.2 Characteristics of transmitted signals
6 Frame structure
7 Frame exchange protocols
   7.1 Frame sequences and acknowledgements
        7.1.1 Write sequence
        7.1.2 Read sequence
   7.2 Description of the frame protocol
        7.2.1 Start bit
        7.2.2 Mode bits
        7.2.3 Master address bits
        7.2.4 Slave address bits
               7.2.4.1 Slave address acknowledge
        7.2.5 Control bits
               7.2.5.1 Interpretation of the four control bits
               7.2.5.2 Control acknowledge
        7.2.6 Data field
               7.2.6.1 Data bits
               7.2.6.2 End of data bit
               7.2.6.3 Data parity bit
               7.2.6.4 Data acknowledge bit
        7.2.7 Acknowledgement data
        7.2.8 Activating the lock/unlock function
        7.2.9 Medium access protocol
               7.2.9.1 Physical characteristics
               7.2.9.2 Carrier sense
               7.2.9.3 Collision detection
8 Bit formats
   8.1 General bit format
   8.2 Detailed description of the bit formats
        8.2.1 Introduction
        8.2.2 Start bit (see figure 8)
        8.2.3 Arbitration bits (see figure 9)
        8.2.4 Master to Slave bits (see figure 10)
        8.2.5 Slave to Master bits (see figure 11)
9 Address allocation
   9.1 Address space definition
   9.2 Allocation of AV/C address codes (Service code
        0001)
   9.3 Sub-devices
10 Data interpretation
   10.1 Slave status
   10.2 Lock address
   10.3 Property memory
   10.4 Data
   10.5 Commands
        10.5.1 Principles of the command table
        10.5.2 The service classification commands
        10.5.3 Addressing of sub-devices
        10.5.4 The "END" command
11 Gateway communication
   11.1 Gateway communication in the Japanese home bus
        system (HBS) format
   11.2 Gateway communication in the format specified
        with the OPR
   11.3 Gateway addresses
12 Command extension
13 Multiple frame message format
14 Electrical specification of a D2B system
   14.1 Typical circuit configuration (see figure 21)
   14.2 Logical and electrical state relationship
   14.3 Driver specification
   14.4 Receiver specification
   14.5 Cable specification
Annex A (normative) The command table
        General commands
        Function commands - group
        Video commands
        Audio commands
        Deck/player commands
        Tuner commands
        Text function commands
        Function commands - specific
        Camera video commands
        Timer commands
Tables
Figures

The audio-video cluster (TV set, VCR, etc.) needed a practical busfor interconnecting devices and exchanging messages. D2Bwas developed for this purpose. Gives the modes of transmission, thecommunication protocols, the addressing scheme, the commandlanguage and the electrical characteristics for the Domestic DigitalBus (D2B) System.