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DIRECTV Set-top box information for the installer
DIRECTV Proprietary November 17, 2005
Version 1.1.a Page 3 of 49 DTV-MD-0058
Table of Contents
Section Page
1 Introduction............................................................................................................................. 6
1.1 Disclaimer......................................................................................................................................6
1.2 Scope..............................................................................................................................................6
1.3 Feedback........................................................................................................................................6
2 Set-top box Front Panel Shortcut Keys .................................................................................. 7
3 Data Port Connectors.............................................................................................................. 8
3.1 Low-Speed Data Port Connector ................................................................................................ 8
3.2 Low-Speed Data Port Interface...................................................................................................9
3.3 Low-Speed Electrical Performance and Characteristics ........................................................10
3.4 Bit Timing (Start, –D0 TO –D7, and Stop) ..............................................................................10
3.5 Idle Interval, General.................................................................................................................10
3.6 Idle Interval for Non-Empty STB Buffer.................................................................................10
3.7 Low-Speed Input Characteristics..............................................................................................11
3.7.1 Input Signaling Characteristics (Pin 3)..................................................................... 11
3.8 Low-Speed Output Characteristics...........................................................................................11
3.8.1 Output Drive Characteristics (Pin 2) ........................................................................ 11
3.8.2 Passive Outputs (Pins 1, 6, 8, and 9) (Optional)....................................................... 11
3.8.3 Low-Speed Signaling Conventions .......................................................................... 12
3.9 USB 2.0 Data Ports.....................................................................................................................12
4 Data Port Commands ............................................................................................................ 13
4.1 Summary of Useful Data Port Commands............................................................................... 13
4.2 Default Data Rate and Format..................................................................................................13
4.3 Command Protocol.....................................................................................................................14
4.4 STB Command Prefix ................................................................................................................16
4.5 STB Responses............................................................................................................................16
5 Data Port Command Details ................................................................................................. 17
5.1 Standby (0x81) ............................................................................................................................17
5.2 Active (0x82) ...............................................................................................................................17
5.3 GetPrimaryStatus (0x83) ...........................................................................................................18