Consumer Electronics Control (CEC) .pdf

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cec规范 CEC 13.7 Deck Control .............................................................................................................. 41 CEC 13.7.1 Messages .............................................................................................................41 CEC 13.7.2 Feature Description..............................................................................................42 CEC 13.7.3 Behavior with Earlier Versions .............................................................................42 CEC 13.8 Tuner Control............................................................................................................. 43 CEC 13.8.1 Messages .............................................................................................................43 CEC 13.8.2 Feature Description..............................................................................................43 CEC 13.8.3 Behavior with Earlier Versions .............................................................................44 CEC 13.9 Vendor Specific Commands..................................................................................... 44 CEC 13.9.1 Messages .............................................................................................................44 CEC 13.9.2 Feature Description..............................................................................................44 CEC 13.9.3 Behavior with Earlier Versions .............................................................................45 CEC 13.10OSD Display ............................................................................................................... 45 CEC 13.10.1 Messages ...........................................................................................................45 CEC 13.10.2 Feature Description............................................................................................46 CEC 13.10.3 Behavior with Earlier Versions ...........................................................................46 CEC 13.11Device OSD Name Transfer.............................................................................

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High-Definition Multimedia Interface Specification Version 1.4

HDMI Licensing, LLC Confidential Page CEC-i

Supplement 1

Consumer Electronics Control (CEC)

High-Definition Multimedia Interface Specification Version 1.4

HDMI Licensing, LLC Confidential Page CEC-ii

CEC Table of Contents CEC Page

CEC 1 INTRODUCTION ............................................................................................................1

CEC 1.1 Normative references.................................................................................................. 1

CEC 1.2 Informative References............................................................................................... 1

CEC 1.3 Document Revision History........................................................................................ 1

CEC 2 DEFINITIONS.................................................................................................................4

CEC 2.1 Conformance Levels ................................................................................................... 4

CEC 2.2 Glossary of Terms ....................................................................................................... 4

CEC 2.3 Usages and Conventions............................................................................................ 4

CEC 2.3.1 State Diagrams........................................................................................................4

CEC 2.3.2 Message Flow Diagrams.........................................................................................5

CEC 2.3.3 Notation ...................................................................................................................5

CEC 3 FEATURE OVERVIEW ..................................................................................................6

CEC 3.1 End-User Features....................................................................................................... 6

CEC 3.2 Supporting Features ................................................................................................... 6

CEC 4 ELECTRICAL SPECIFICATION....................................................................................7

CEC 5 SIGNALING AND BIT TIMINGS....................................................................................9

CEC 5.1 CEC Line Usage...........................................................................................................9

CEC 5.2 Bit Timing ..................................................................................................................... 9

CEC 5.2.1 Start Bit Timing........................................................................................................9

CEC 5.2.2 Data Bit Timing........................................................................................................9

CEC 6 FRAME DESCRIPTION ...............................................................................................12

CEC 6.1 Header/Data Block description ................................................................................ 12

CEC 6.1.1 EOM (End of Message).........................................................................................12

CEC 6.1.2 ACK (Acknowledge) ..............................................................................................13

CEC 6.1.3 Header Block Details.............................................................................................13

CEC 7 RELIABLE COMMUNICATION MECHANISMS .........................................................14

CEC 7.1 Frame Re-transmissions........................................................................................... 14

CEC 7.2 Flow Control............................................................................................................... 14

CEC 7.3 Frame Validation........................................................................................................ 14

CEC 7.4 CEC Line Error Handling .......................................................................................... 14

CEC 8 PROTOCOL EXTENSIONS .........................................................................................16

CEC 9 CEC ARBITRATION ....................................................................................................17

High-Definition Multimedia Interface Specification Version 1.4

HDMI Licensing, LLC Confidential Page CEC-iii

CEC 9.1 Signal Free Time........................................................................................................ 17

CEC 9.2 Message Time Constraints....................................................................................... 17

CEC 10 DEVICE CONNECTIVITY AND ADDRESSING ..........................................................18

CEC 10.1 Physical Address Discovery .................................................................................... 18

CEC 10.2 Logical Addressing ................................................................................................... 18

CEC 10.2.1 Logical Address Allocation ...................................................................................20

CEC 10.2.2 Special Devices....................................................................................................21

CEC 10.2.3 Behavior with Earlier Versions .............................................................................23

CEC 11 SWITCH REQUIREMENTS .........................................................................................24

CEC 11.1 CEC Switch................................................................................................................. 24

CEC 12 HIGH LEVEL PROTOCOL...........................................................................................26

CEC 12.1 Source Declaration.................................................................................................... 26

CEC 12.2 Protocol General Rules............................................................................................. 26

CEC 12.3 Feature Abort ............................................................................................................. 27

CEC 12.4 Abort ........................................................................................................................... 28

CEC 13 CEC FEATURES DESCRIPTION................................................................................29

CEC 13.1 One Touch Play ......................................................................................................... 29

CEC 13.1.1 Messages .............................................................................................................29

CEC 13.1.2 Feature Description ..............................................................................................29

CEC 13.1.3 Behavior with Earlier Versions .............................................................................30

CEC 13.2 Routing Control .........................................................................................................30

CEC 13.2.1 Messages .............................................................................................................30

CEC 13.2.2 Feature Description ..............................................................................................31

CEC 13.2.3 Behavior with Earlier Versions .............................................................................33

CEC 13.3 System Standby......................................................................................................... 33

CEC 13.3.1 Messages .............................................................................................................33

CEC 13.3.2 Feature Description ..............................................................................................33

CEC 13.3.3 Behavior with Earlier Versions .............................................................................35

CEC 13.4 One Touch Record .................................................................................................... 35

CEC 13.4.1 Messages .............................................................................................................35

CEC 13.4.2 Feature Description ..............................................................................................35

CEC 13.4.3 Behavior with Earlier Versions .............................................................................37

CEC 13.5 Timer Programming .................................................................................................. 37

CEC 13.5.1 Messages .............................................................................................................37

CEC 13.5.2 Feature Description ..............................................................................................38

CEC 13.5.3 Performing a Timed Recording using another device as source .........................39

CEC 13.5.4 Behavior with Earlier Versions .............................................................................39

CEC 13.6 System Information ................................................................................................... 39

CEC 13.6.1 Messages .............................................................................................................39

CEC 13.6.2 Feature Description ..............................................................................................40

High-Definition Multimedia Interface Specification Version 1.4

HDMI Licensing, LLC Confidential Page CEC-iv

CEC 13.6.3 Additional Information...........................................................................................41

CEC 13.6.4 Behavior with Earlier Versions .............................................................................41

CEC 13.7 Deck Control .............................................................................................................. 41

CEC 13.7.1 Messages .............................................................................................................41

CEC 13.7.2 Feature Description ..............................................................................................42

CEC 13.7.3 Behavior with Earlier Versions .............................................................................42

CEC 13.8 Tuner Control............................................................................................................. 43

CEC 13.8.1 Messages .............................................................................................................43

CEC 13.8.2 Feature Description ..............................................................................................43

CEC 13.8.3 Behavior with Earlier Versions .............................................................................44

CEC 13.9 Vendor Specific Commands..................................................................................... 44

CEC 13.9.1 Messages .............................................................................................................44

CEC 13.9.2 Feature Description ..............................................................................................44

CEC 13.9.3 Behavior with Earlier Versions .............................................................................45

CEC 13.10OSD Display ............................................................................................................... 45

CEC 13.10.1 Messages ...........................................................................................................45

CEC 13.10.2 Feature Description............................................................................................46

CEC 13.10.3 Behavior with Earlier Versions ...........................................................................46

CEC 13.11Device OSD Name Transfer...................................................................................... 46

CEC 13.11.1 Messages ...........................................................................................................46

CEC 13.11.2 Feature Description............................................................................................46

CEC 13.11.3 Behavior with Earlier Versions ...........................................................................47

CEC 13.12Device Menu Control................................................................................................. 47

CEC 13.12.1 Messages ...........................................................................................................47

CEC 13.12.2 Feature Description............................................................................................47

CEC 13.12.3 Behavior with Earlier Versions ...........................................................................48

CEC 13.13Remote Control Pass Through................................................................................. 48

CEC 13.13.1 Messages ...........................................................................................................48

CEC 13.13.2 Feature Description............................................................................................48

CEC 13.13.3 Press and Hold Operation..................................................................................49

CEC 13.13.4 RC Key Forwarding Recommendations.............................................................51

CEC 13.13.5 Other uses of <User Control Pressed>..............................................................51

CEC 13.13.6 Deterministic UI Functions .................................................................................51

CEC 13.13.7 Non-Deterministic Commands with Parameters ................................................53

CEC 13.13.8 Behavior with Earlier Versions ...........................................................................53

CEC 13.14Give Device Power Status ........................................................................................ 53

CEC 13.14.1 Messages ...........................................................................................................53

CEC 13.14.2 Feature Description............................................................................................53

CEC 13.14.3 Behavior with Earlier Versions ...........................................................................54

CEC 13.15System Audio Control............................................................................................... 55

CEC 13.15.1 Messages ...........................................................................................................55

CEC 13.15.2 Feature Description............................................................................................55

CEC 13.15.3 Discovering the Amplifier’s Audio Format support .............................................60

CEC 13.15.4 Further behavior .................................................................................................61

CEC 13.15.4.1 Operation with legacy Amplifier .................................................................... 61

CEC 13.15.4.2 Operation with TVs that do not support the Feature..................................... 61

CEC 13.15.4.3 Audio-only use .............................................................................................. 62

CEC 13.15.4.4 Power State Changes ................................................................................... 62

High-Definition Multimedia Interface Specification Version 1.4

HDMI Licensing, LLC Confidential Page CEC-v

CEC 13.15.4.5 Usage of remote control pass through.......................................................... 62

CEC 13.15.5 Behavior with Earlier Versions ...........................................................................63

CEC 13.16Audio Rate Control.................................................................................................... 63

CEC 13.16.1 Messages ...........................................................................................................63

CEC 13.16.2 Feature Description............................................................................................63

CEC 13.16.3 Behavior with Earlier Versions ...........................................................................64

CEC 13.17Audio Return Channel Control................................................................................. 64

CEC 13.17.1 Messages ...........................................................................................................64

CEC 13.17.2 Feature description.............................................................................................64

CEC 13.17.2.1 Initiation and Termination from ARC Rx device............................................ 65

CEC 13.17.2.2 Request from ARC Tx device ....................................................................... 65

CEC 13.17.3 Behavior with Earlier Versions ...........................................................................66

CEC 13.18Capability Discovery and Control for HEC ............................................................. 67

CEC 13.18.1 Introduction and Messages ................................................................................67

CEC 13.18.2 CDC only Device ................................................................................................67

CEC 13.18.3 CDC Device with CEC........................................................................................67

CEC 13.18.4 Behavior with Earlier Versions ...........................................................................67

CEC 14 DEVICE STATES .........................................................................................................68

CEC 14.1.1 Device States .......................................................................................................68

CEC 14.1.2 State Changes......................................................................................................68

CEC 14.1.3 All Devices............................................................................................................68

CEC 14.1.4 TV .........................................................................................................................68

CEC 14.1.5 Recording Device .................................................................................................69

CEC 14.1.6 Playback Device...................................................................................................69

CEC 14.1.7 Menu Providing Device ........................................................................................70

CEC 15 MESSAGE DESCRIPTIONS........................................................................................71

CEC 16 MESSAGE DEPENDENCIES ......................................................................................97

CEC 17 OPERAND DESCRIPTIONS......................................................................................106

CEC APPENDIX A NON-CEC SWITCH (INFORMATIVE).......................................................127

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