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Specification for D-PHY Version 2.5
05-Jul-2019
iv Copyright © 2007-2019 MIPI Alliance, Inc.
All rights reserved.
Confidential
6.4 High-Speed Data Transmission ..................................................................................... 27
6.4.1 Burst Payload Data ..................................................................................................... 27
6.4.2 Start-of-Transmission ................................................................................................. 27
6.4.3 End-of-Transmission .................................................................................................. 28
6.4.4 HS Data Transmission Burst....................................................................................... 29
6.4.5 Alternate Low Power (ALP) Mode and HS Transmission Burst ............................... 31
6.5 Bi-directional Data Lane Turnaround ............................................................................ 34
6.5.1 Control Mode Lane Turnaround ................................................................................. 34
6.5.2 Fast Lane Turnaround ................................................................................................. 37
6.6 Escape Mode .................................................................................................................. 40
6.6.1 Remote Triggers ......................................................................................................... 41
6.6.2 Low-Power Data Transmission .................................................................................. 42
6.6.3 Ultra-Low Power State ............................................................................................... 42
6.6.4 Escape Mode State Machine ...................................................................................... 43
6.6.5 Escape Mode Equivalents in ALP Mode .................................................................... 45
6.7 High-Speed Clock Transmission ................................................................................... 46
6.7.1 Low-Power Mode ....................................................................................................... 46
6.7.2 Alternate Low-Power Mode ....................................................................................... 50
6.8 Clock Lane Ultra-Low Power State ............................................................................... 52
6.8.1 Clock Lane ULPS in LP Mode ................................................................................... 52
6.8.2 Clock Lane ULPS in ALP Mode ................................................................................ 53
6.9 Global Operation Timing Parameters ............................................................................ 54
6.10 System Power States ...................................................................................................... 59
6.11 Initialization ................................................................................................................... 59
6.11.1 LP Initialization .......................................................................................................... 59
6.11.2 ALP Initialization ....................................................................................................... 60
6.12 Skew Calibration ........................................................................................................... 62
6.13 Alternate Calibration Sequence ..................................................................................... 68
6.14 Preamble Sequence ........................................................................................................ 70
6.15 HS-Idle State .................................................................................................................. 72
6.16 Sync Patterns ................................................................................................................. 76
6.17 Global Operation Flow Diagram ................................................................................... 77
6.18 Data Rate Dependent Parameters (Informative) ............................................................ 79
6.18.1 Parameters Containing Only UI Values
...................................................................... 79
6.18.2 Parameters Containing Time and UI values ............................................................... 79
6.18.3 Parameters Containing Only Time Values .................................................................. 80
6.18.4 Parameters Containing Only Time Values That Are Not Data Rate Dependent ......... 80
6.19 Interoperability .............................................................................................................. 81
7 Fault Detection ..........................................................................................................83
7.1 Contention Detection ..................................................................................................... 83
7.2 Sequence Error Detection .............................................................................................. 84
7.2.1 SoT Error .................................................................................................................... 84
7.2.2 SoT Sync Error ........................................................................................................... 84
7.2.3 EoT Sync Error ........................................................................................................... 84
7.2.4 Escape Mode Entry Command Error .......................................................................... 84
7.2.5 LP Transmission Sync Error ....................................................................................... 84
7.2.6 False Control Error ..................................................................................................... 84