
DIRECTV Set-Top Box Information for the Installer
DIRECTV, Inc. March 5, 2008
Version 2.2 Page 4 of 42 DTV-MD-0058
5.11 GetReturnValue (0x95).....................................................................................................................23
5.12 Reboot (0x96).....................................................................................................................................23
5.13 SendUserCommand (0xA5)..............................................................................................................24
5.14 OpenUserChannel (0xA6) ................................................................................................................25
5.15 GetTuner (0x9A)...............................................................................................................................27
5.16 GetPrimaryStatusMT (0x8A) ..........................................................................................................28
5.17 GetCurrentChannelMT (0x8B) .......................................................................................................30
5.18 GetSignalQualityMT (0x9D)............................................................................................................30
5.19 OpenUserChannelMT (0x9F) .......................................................................................................... 31
6Remote Control................................................................................................................................33
6.1 Introduction ..........................................................................................................................................33
6.2 Brand Setup Code List......................................................................................................................... 33
6.3 Remote Control Key Codes.................................................................................................................. 35
7Wired IR Input Port........................................................................................................................37
7.1 Introduction ..........................................................................................................................................37
7.2 Interface Specifications........................................................................................................................37
8Appendix: Low Speed Serial Port Specifications...........................................................................38
8.1 Low-Speed Data Port Connector ........................................................................................................38
8.2 Low-Speed Electrical Performance and Characteristics ..................................................................39
8.2.1 Bit Timing (Start, –D0 TO –D7, and Stop)........................................................................39
8.2.2 Idle Interval, General..........................................................................................................39
8.2.3 Idle Interval for Non-Empty STB Buffer ...........................................................................39
8.3 Low-Speed Input Characteristics........................................................................................................39
8.3.1 Input Signaling Characteristics (Pin 3)...............................................................................39
8.4 Low-Speed Output Characteristics.....................................................................................................40
8.4.1 Output Drive Characteristics (Pin 2)..................................................................................40
8.4.2 Passive Outputs (Pins 1, 6, 8, and 9) (Optional).................................................................40
8.5 Low-Speed Signaling Conventions......................................................................................................41
9Appendix: Acronyms.......................................................................................................................42