用户手册 — DirecTV DTV-MD0-0058

目录

• Introduction

  6
• Disclaimer

  6
• Scope

  6
• Feedback

  6
• Set-top box Front Panel Shortcut Keys

  7
• Table 1: Shortcut Keys Combinations

  7
• Table 2: Supported Shortcut Keys

  7
• Data Port Connectors

  8
• Low-Speed Data Port Connector

  8
• Table 3: Type of Data Port Connector

  8
• Low-Speed Data Port Interface

  9
• Figure 1. Low-Speed Data Port Pin Assignment Diagram

  9
• Figure 2. Orientation of the RJ22 (4 way/4 position) Jack

  9
• Low-Speed Electrical Performance and Characteristics

  10
• Bit Timing (Start, –D0 TO –D7, and Stop)

  10
• Idle Interval, General

  10
• Idle Interval for Non-Empty STB Buffer

  10
• Figure 3. Bit Timing Diagram

  10
• Table 4: Timing Characteristics

  10
• Low-Speed Input Characteristics

  11
• Input Signaling Characteristics (Pin 3)

  11
• Low-Speed Output Characteristics

  11
• Output Drive Characteristics (Pin 2)

  11
• Passive Outputs (Pins 1, 6, 8, and 9) (Optional)

  11
• Table 5: Input Drive Characteristics

  11
• Table 6: Output Drive Characteristics

  11
• Low-Speed Signaling Conventions

  12
• USB 2.0 Data Ports

  12
• Table 7: Passive Drive Characteristics

  12
• Table 8: Low-Speed Data Port Signaling Conventions

  12
• Data Port Commands

  13
• Summary of Useful Data Port Commands

  13
• Default Data Rate and Format

  13
• Command Protocol

  14
• Figure 4. Service Command Parser Flowchart

  15
• STB Command Prefix

  16
• STB Responses

  16
• Data Port Command Details

  17
• Standby (0x81)

  17
• Active (0x82)

  17
• GetPrimaryStatus (0x83)

  18
• GetCommandVersion (0x84)

  20
• GetCurrentChannel (0x87)

  20
• GetSignalQuality (0x90)

  21
• GetCurrentTime (0x91)

  21
• GetUserCommand (0x92)

  22
• EnableUserEntry (0x93)

  23
• DisableUserEntry (0x94)

  24
• GetReturnValue (0x95)

  24
• Reboot (0x96)

  24
• SendUserCommand (0xA5)

  25
• OpenUserChannel (0xA6)

  27
• Remote Control

  29
• Introduction

  29
• Figure 5: DIRECTV Universal Remote

  30
• Remote Control Key Codes

  31
• Target Device Mode Mapping

  33
• Brand Setup Code List

  33
• Table 9: Remote Control Device Mapping

  33
• Table 10: DIRECTV STB Device Codes

  33
• Table 11 Setup Codes for Audio Amplifiers (A)

  33
• Table 12 Setup Codes for Audio Amp/Tuners (R)

  34
• Table 13 Setup Codes for Satellite Receivers (S)

  37
• Table 14 Setup Codes for TVs (T)

  37
• Table 15 Setup Codes for VCRs (V)

  42
• Table 16 Setup Codes for Digital Video Disks (Y)

  45
• Appendix A: Acronyms

  48