DisplayPort 1.4协议详解：双页中文翻译版

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"DisplayPort (DP) 协议标准 V1.4-中文版(双页翻译)，由VESA发布，版权2007-2015年，旨在定义一种灵活的系统和设备，通过数字通信接口在源设备和接收设备之间传输视频、音频和其他数据。该文档为DP标准的第1.4d1版，修订了DPv1.1和DPv1.2，增加了高速操作、多流单连接等功能。" DisplayPort (DP) 是由Video Electronics Standards Association (VESA) 制定的一项开放的数字通信接口标准，用于内部连接（如PC或显示器内部）以及外部显示设备之间的数据传输。它支持PC与显示器、投影仪、电视，甚至DVD播放器与电视显示等设备间的连接。 DP协议标准V1.4是DP协议的一个重要版本，其中包含了多个改进和增强。DPv1.1的修订主要目的是修正错误并增加对DPv1.1的澄清，确保了标准的准确性和稳定性。而DPv1.2的升级则引入了以下几个关键特性： 1. 高速操作：提高了数据传输速率，以支持更高的分辨率和刷新率，满足4K、8K等高清晰度显示的需求。 2. 更灵活的拓扑管理：允许更复杂的设备连接，如菊花链式连接，使得多个显示器可以共享一个源设备，增强了系统的扩展性。 3. 单连接上的多流传输：允许多个独立的视频或音频流在同一连接上同时传输，提供多显示器设置的便利。 4. 辅助通道的高速通信：辅助通道(Aux Channel)的带宽提升，用于设备控制、状态监控等，提高了通信效率和实时性。 DP标准还涵盖了各种数据编码技术，如LVDS (Low Voltage Differential Signaling) 和TMDS (Transition Minimized Differential Signaling)，以保证信号的高质量传输。此外，DP协议还包括电源管理、热插拔检测、音频同步等特性，确保了用户在使用过程中的稳定性和便捷性。 DisplayPort V1.4标准为数字显示设备提供了高效、灵活且功能强大的连接方案，推动了高清显示技术的发展，并为消费者和制造商提供了丰富的选择。对于IT专业人士而言，理解并掌握DP协议标准对于设计和维护现代显示系统至关重要。

VESA Proposed DisplayPort (DP) Standard DISTRIBUTION TO NON-MEMBERS IS PROHIBITED Version 1.4 d1

Tables

Table 1: Patents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Table 2: Main Contributors to DP v1.4 (To be updated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Table 3: Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Table 1-1: Acronyms, Initializations, and Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Table 1-2: Glossary of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Table 1-3: Reference Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Table 1-4: DP Main-Link Application Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

Table 1-5: Pixel Data Mapping over 4-lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

Table 2-1: Device Types Covered by this Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Table 2-2: Topological Device Categories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Table 2-3: Control Symbols for Default Framing Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

Table 2-4: Enhanced Framing Mode Control Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Table 2-5: Pixel Steering into Main-Link Lanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Table 2-6: VB-ID Bit Definition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

Table 2-7: 10bpc RGB (30 bits per pixel)

1366x768 Packing to a 4-Lane Main-Link

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

Table 2-8: 8bpc RGB to a 4-Lane Main-Link Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

Table 2-9: 8bpc RGB Mapping to a 2-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

Table 2-10: 8bpc RGB Mapping to a 1-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

Table 2-11: 6bpc RGB Mapping to a 4-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

Table 2-12: 6bpc RGB Mapping to a 2-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

Table 2-13: 6bpc RGB Mapping to a 1-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

Table 2-14: 10bpc RGB Mapping to a 4-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

Table 2-15: 10bpc RGB Mapping to a 2-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

Table 2-16: 10bpc RGB Mapping to a 1-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

Table 2-17: 12bpc RGB Mapping to a 4-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

Table 2-18: 12bpc RGB Mapping to a 2-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

Table 2-19: 12bpc RGB Mapping to a 1-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

Table 2-20: 16bpc RGB Mapping to a 4-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

Table 2-21: 16bpc RGB Mapping to a 2-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

Table 2-22: 16bpc RGB Mapping to a 1-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

Table 2-23: 8bpc YCbCr 4:2:2 Mapping to a 4-Lane Main-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

Table 2-24: 8bpc YCbCr 4:2:2 Mapping to a 2-Lane Main-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

Table 2-25: 8bpc YCbCr 4:2:2 Mapping to a 1-Lane Main-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

Table 2-26: 10bpc YCbCr 4:2:2 Mapping to a 4-Lane Main-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Table 2-27: 10bpc YCbCr 4:2:2 Mapping to a 2-Lane Main-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Table 2-28: 10bpc YCbCr 4:2:2 Mapping to a 1-Lane Main-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Table 2-29: 12bpc YCbCr 4:2:2 Mapping to a 4-Lane Main-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Table 2-30: 12bpc YCbCr 4:2:2 Mapping to a 2-Lane Main-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Table 2-31: 12bpc YCbCr 4:2:2 Mapping to a 1-Lane Main-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Table 2-32: 16bpc YCbCr 4:2:2 Mapping to a 4-Lane Main-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

VESA Proposed DisplayPort (DP) Standard DISTRIBUTION TO NON-MEMBERS IS PROHIBITED Version 1.4 d1

Table 2-33: 16bpc YCbCr 4:2:2 Mapping to a 2-Lane Main-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

Table 2-34: 16bpc YCbCr 4:2:2 Mapping to a 1-Lane Main-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

Table 2-35: 8bpc YCbCr 4:2:0 Even Lines (Starting with Line 0) over Four Main-Link Lanes . . . . . .94

Table 2-36: 8bpc YCbCr 4:2:0 Odd Lines (Starting with Line 0) over Four Main-Link Lanes . . . . . .94

Table 2-37: 8bpc YCbCr 4:2:0 Even Lines (Starting with Line 0) over Two Main-Link Lanes . . . . . .95

Table 2-38: 8bpc YCbCr 4:2:0 Odd Lines (Starting with Line 0) over Two Main-Link Lanes. . . . . . .95

Table 2-39: 8bpc YCbCr 4:2:0 Even Lines (Starting with Line 0) over One Main-Link Lane . . . . . . .95

Table 2-40: 8bpc YCbCr 4:2:0 Odd Lines (Starting with Line 0) over One Main-Link Lane. . . . . . . .95

Table 2-41: 10bpc YCbCr 4:2:0 Even Lines (Starting with Line 0) over Four Main-Link Lanes . . . . .96

Table 2-42: 10bpc YCbCr 4:2:0 Odd Lines (Starting with Line 0) over Four Main-Link Lanes . . . . .96

Table 2-43: 10bpc YCbCr 4:2:0 Even Lines (Starting with Line 0) over Two Main-Link Lanes . . . . .97

Table 2-44: 10bpc YCbCr 4:2:0 Odd Lines (Starting with Line 0) over Two Main-Link Lanes. . . . . .97

Table 2-45: 10bpc YCbCr 4:2:0 Even Lines (Starting with Line 0) over One Main-Link Lane . . . . . .98

Table 2-46: 10bpc YCbCr 4:2:0 Odd Lines (Starting with Line 0) over One Main-Link Lane. . . . . . .98

Table 2-47: 12bpc YCbCr 4:2:0 Even Lines (Starting with Line 0) over Four Main-Link Lanes . . . . .99

Table 2-48: 12bpc YCbCr 4:2:0 Odd Lines (Starting with Line 0) over Four Main-Link Lanes . . . . .99

Table 2-49: 12bpc YCbCr 4:2:0 Even Lines (Starting with Line 0) over Two Main-Link Lanes . . . .100

Table 2-50: 12bpc YCbCr 4:2:0 Odd Lines (Starting with Line 0) over Two Main-Link Lanes. . . . .100

Table 2-51: 12bpc YCbCr 4:2:0 Even Lines (Starting with Line 0) over One Main-Link Lane . . . . .101

Table 2-52: 12bpc YCbCr 4:2:0 Odd Lines (Starting with Line 0) over One Main-Link Lane. . . . . .101

Table 2-53: 16bpc YCbCr 4:2:0 Even Lines (Starting with Line 0) over Four Main-Link Lanes . . . .102

Table 2-54: 16bpc YCbCr 4:2:0 Odd Lines (Starting with Line 0) over Four Main-Link Lanes . . . .102

Table 2-55: 16bpc YCbCr 4:2:0 Even Lines (Starting with Line 0) over Two Main-Link Lanes . . . .103

Table 2-56: 16bpc YCbCr 4:2:0 Odd Lines (Starting with Line 0) over Two Main-Link Lanes. . . . .103

Table 2-57: 16bpc YCbCr 4:2:0 Even Lines (Starting with Line 0) over One Main-Link Lane . . . . .104

Table 2-58: 16bpc YCbCr 4:2:0 Odd Lines (Starting with Line 0) over One Main-Link Lane. . . . . .104

Table 2-59: 8bpp Y-only to a 4-Lane Main-Link Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

Table 2-60: 8bpp Y-only Mapping to a 2-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

Table 2-61: 8bpp Y-only Mapping to a 1-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

Table 2-62: 10bpp Y-only Mapping to a 4-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

Table 2-63: 10bpp Y-only Mapping to a 2-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

Table 2-64: 10bpp Y-only Mapping to a 1-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

Table 2-65: 12bpp Y-only Mapping to a 4-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

Table 2-66: 12bpp Y-only Mapping to a 2-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

Table 2-67: 12bpp Y-only Mapping to a 1-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

Table 2-68: 16bpp Y-only Mapping to a 4-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

Table 2-69: 16bpp Y-only Mapping to a 2-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

Table 2-70: 16bpp Y-only Mapping to a 1-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

Table 2-71: 6bpp RAW Mapping to a 4-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

Table 2-72: 6bpp RAW Mapping to a 2-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

Table 2-73: 6bpp RAW Mapping to a 1-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

Table 2-74: 7bpp RAW Mapping to a 4-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Table 2-75: 7bpp RAW Mapping to a 2-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Table 2-76: 7bpp RAW Mapping to a 1-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Table 2-77: 8bpp RAW Mapping to a 4-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111

Table 2-78: 8bpp RAW Mapping to a 2-Lane Main-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111

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