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UG0806User Guide MIPI CSI-2 Receiver Decoder For PolarFireMicrosemi HeadquartersOne Enterprise, Aliso Viejo,CA 92656 USAWithin the USA: +1 (800) 713-4113 Outside the USA: +1 (949) 380-6100 Sales: +1 (949) 380-6136Fax: +1 (949) 215-4996Email: *************************** ©2021 Microsemi, a wholly owned subsidiary of Microchip Technology Inc. All rights reserved. Microsemi and the Microsemi logo are registered trademarks of Microsemi Corporation. All other trademarks and service marks are the property of their respective owners. Microsemi makes no warranty, representation, or guarantee regarding the information contained herein or the suitability of its products and services for any particular purpose, nor does Microsemi assume any liability whatsoever arising out of the application or use of any product or circuit. 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Learn more at .Contents1Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11.1Revision 10.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2Revision 9.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.3Revision 8.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.4Revision 7.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.5Revision 6.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.6Revision 5.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.7Revision 4.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.8Revision 3.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.9Revision2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.10Revision 1.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32.1Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32.2Supported Families . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3Hardware Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43.1Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.1.1Embsync_detect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.1.2mipi_csi2_rxdecoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.2Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.3AXI4 Stream Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.4Configuration Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.5Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93.5.1Long Packet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93.5.2Short Packet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4License . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104.1Encrypted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104.2RTL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 6Resource Utilization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12Figure 1Video Data Stream . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Figure 2Architecture of MIPI CSI-2 Rx Solution for 4 Lane Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Figure 3FSM Implementation of Decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 4Timing Waveform of Long Packet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Figure 5Timing Waveform of Frame Start Packet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Table 1Supported Short Packet Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Table 2Input and Output Ports for Native Video Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 3Ports for AXI4 Stream Video Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 4Configuration Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Table 5Resource Utilization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121Revision HistoryThe revision history describes the changes that were implemented in the document. The changes arelisted by revision, starting with the current publication.1.1Revision 10.0The following is a summary of changes made in this revision.•Updated Key Features, page3•Updated Figure2, page4.•Updated T able1, page5•Updated T able2, page61.2Revision 9.0The following is a summary of changes made in this revision.•Updated Key Features, page3•Updated T able4, page81.3Revision 8.0The following is a summary of changes made in this revision.•Added support for 8 lanes configuration for Raw-14, Raw-16 and RGB-888 Data types.•Updated Figure2, page4.•Updated section Key Features, page3.•Updated section mipi_csi2_rxdecoder, page5.•Updated T able2, page6 and Table4, page8.1.4Revision 7.0The following is a summary of changes made in this revision.•Added sub level sections Key Features, page3 and Supported Families, page3.•Updated T able4, page8.•Updated Figure4, page9 and Figure5, page9.•Added sections License, page10, Installation Instructions, page11, and Resource Utilization, page12.•Core Support for Raw14, Raw16, and RGB888 data types for 1, 2, and 4 lanes were added. 1.5Revision 6.0The following is a summary of changes made in this revision.•Updated Introduction, page3.•Updated Figure2, page4.•Updated T able2, page6.•Updated T able4, page8.1.6Revision 5.0The following is a summary of changes made in this revision.•Updated Introduction, page3.•Updated title for Figure2, page4.•Updated T able2, page6 and Table4, page8.1.7Revision 4.0Updated the document for Libero SoC v12.1.The following is a summary of changes made in this revision.•Support for RAW12 data type was added.•Added frame_valid_o output signal in the IP, see Table2, page6.•Added g_NUM_OF_PIXELS configuration parameter in Table4, page8.1.9Revision2.0Support for RAW10 data type was added.1.10Revision 1.0The first publication of this document.Introduction2IntroductionMIPI CSI-2 is a standard specification defined by a Mobile Industry Processor Interface (MIPI) alliance.The Camera Serial Interface 2 (CSI-2) specification defines an interface between a peripheral device(camera) and a host processor (base-band, application engine). This user guide describes the MIPI CSI-2 receiver decoder for PolarFire (MIPI CSI-2 RxDecoder), which decodes the data from the sensorinterface.The IP core supports multi-lane (1, 2, 4, and 8 lanes) for Raw-8, Raw-10, Raw-12, Raw-14, Raw-16, andRGB-888 data types.MIPI CSI-2 operates in two modes—high-speed mode and low-power mode. In high-speed mode, MIPICSI-2 supports the transport of image data using short packet and long packet formats. Short packetsprovide frame synchronization and line synchronization information. Long packets provide pixelinformation. The sequence of transmitted packets is as follows.1.Frame start (short packet)2.Line start (optional)3.Few image data packets (long packets)4.Line end (optional)5.Frame end (short packet)One long packet is equivalent to one line of image data. The following illustration shows the video datastream.Figure 1 • Video Data StreamFS Image Image Image Image FE2.1Key Features•Supports Raw-8, Raw-10, Raw-12, Raw-14, Raw-16, and RGB-888 data types for 1, 2, 4, and 8 lanes•Supports 4 pixels per pixel clock for 4 and 8 lanes mode•Supports Native and AXI4 Stream Video Interface•IP does not support transactions in Low power mode•IP does not support Embedded/Virtual channel (ID) mode2.2Supported Families•PolarFire® SoC•PolarFire®3Hardware ImplementationThis section describes the hardware implementation details. The following illustration shows the MIPI CSI2 receiver solution that contains the MIPI CSI2 RxDecoder IP . This IP has to be used in conjunction with the PolarFire ® MIPI IOD generic interface blocks and Phase-Locked Loop (PLL). The MIPI CSI2 RxDecoder IP is designed to work with the PolarFIre MIPI IOG blocks. Figure 2 shows the pin connection from the PolarFire IOG to the MIPI CSI2 RxDecoder IP . A PLL is required to generate the parallel clock (pixel clock). The input clock to the PLL will be from the RX_CLK_R output pin of the IOG. The PLL has to be configured to produce the parallel clock, based on the MIPI_bit_clk and the number of lanes used. The equation used to calculate the parallel clock is as follows.The following illustration shows the architecture of MIPI CSI-2 Rx for PolarFire.Figure 2 •Architecture of MIPI CSI-2 Rx Solution for 4 Lane ConfigurationThe preceding figure shows the different modules in the MIPI CSI2 RxDecoder IP . When used in conjunction with the PolarFire IOD Generic and PLL, this IP can receive and decode the MIPI CSI2 packets to produce pixel data along with the valid signals.CAM CLOCK I MIPI bit clk ()4/=PARALLEL CLOCK CAM CLOCK I Num of Lanes ⨯8⨯()g DATAWIDTH g NUM OF PIXELS ⨯()/=3.1Design DescriptionThis section describes the different internal modules of the IP .3.1.1Embsync_detectThis module receives data from the PolarFire IOG and detects the embedded SYNC code in the received data of each lane. This module also aligns the data from each lane to the SYNC code and sends it to the mipi_csi2_rxdecoder module for decoding the packet.3.1.2mipi_csi2_rxdecoderThis module decodes the incoming short packets and long packets and generates theframe_start_o, frame_end_o, frame_valid_o, line_start_o, line_end_o,word_count_o, line_valid_o, and data_out_o outputs. Pixel data arrives between line start and line end signals. The short packet contains only the packet header and supports various data types. MIPI CSI-2 Receiver IP Core supports the following data types for short packets.The long packet contains the image data. The length of the packet is determined by the horizontal resolution, to which the camera sensor is configured. This can be seen at the word_count_o output signal in bytes.The following illustration shows the FSM implementation of decoder.Figure 3 •FSM Implementation of DecoderTable 1 • Supported Short Packet Data TypesData Type Description 0x00Frame Start 0x01Frame End1.Frame Start: On receiving the frame start packet, generate the frame start pulse, and then wait forline start.2.Line Start: On receiving the line start indication, generate the line start pulse.3.Line End: On generating the line start pulse, store the pixel data, and then generate the line endpulse. Repeat Step 2 and 3 until the frame end packet is received.4.Frame End: On receiving the frame end packet, generate the frame end pulse. Repeat the abovesteps for all frames.The CAM_CLOCK_I must be configured to the image sensor frequency, to process the incoming data,regardless of Num_of_lanes_i configured to one lane, two lanes, or four lanes.The IP supports Raw-8, Raw-10, Raw-12, Raw-14, Raw-16, and RGB-888 data types. One pixel perclock is received on data_out_o if the g_NUM_OF_PIXELS is set to one. If the g_NUM_OF_PIXELS isset to 4 then four pixels per clock are sent out and the parallel clock has to be configured 4 times lowerthan the normal case. The four pixels per clock configuration gives user the flexibility to run their designat higher resolutions and higher camera data rates, which makes it easier to meet design timings. Toindicate valid image data, the line_valid_o output signal is sent. Whenever it is asserted high, output pixeldata is valid.3.2Inputs and OutputsThe following table lists the input and output ports of the IP configuration parameters.Table 2 • Input and Output Ports for Native Video InterfaceSignal Name Direction Width DescriptionCAM_CLOCK_I Input1Image sensor clockPARALLEL_CLOCK_I Input1Pixel clockRESET_N_I Input1Asynchronous active low reset signalL0_HS_DATA_I Input8-bits High speed input data from lane 1L1_HS_DATA_I Input8-bits High speed input data from lane 2L2_HS_DATA_I Input8-bits High speed input data from lane 3L3_HS_DATA_I Input8-bits High speed input data from lane 4L4_HS_DATA_I Input8-bits High speed input data from lane 5L5_HS_DATA_I Input8-bits High speed input data from lane 6L6_HS_DATA_I Input8-bits High speed input data from lane 7L7_HS_DATA_I Input8-bits High speed input data from lane 8L0_LP_DATA_I Input1Positive low power input data from lane one.Default value is 0 for PolarFire and PolarFire SoC. L0_LP_DATA_N_I Input1Negative low power input data from lane oneL1_LP_DATA_I Input1Positive low power input data from lane two.Default value is 0 for PolarFire and PolarFire SoC. L1_LP_DATA_N_I Input1Negative low power input data from lane twoL2_LP_DATA_I Input1Positive low power input data from lane three.Default value is 0 for PolarFire and PolarFire SoC. L2_LP_DATA_N_I Input1Negative low power input data from lane threeL3_LP_DATA_I Input1Positive low power input data from lane four.Default value is 0 for PolarFire and PolarFire SoC. L3_LP_DATA_N_I Input1Negative low power input data from lane fourL4_LP_DATA_I Input1Positive low power input data from lane five.Default value is 0 for PolarFire and PolarFire SoC.L4_LP_DATA_N_I Input1Negative low power input data from lane fiveL5_LP_DATA_I Input1Positive low power input data from lane six.Default value is 0 for PolarFire and PolarFire SoC. L5_LP_DATA_N_I Input1Negative low power input data from lane sixL6_LP_DATA_I Input1Positive low power input data from lane seven.Default value is 0 for PolarFire and PolarFire SoC. L6_LP_DATA_N_I Input1Negative low power input data from lane sevenL7_LP_DATA_I Input1Positive low power input data from lane eight.Default value is 0 for PolarFire and PolarFire SoC. L7_LP_DATA_N_I Input1Negative low power input data from lane eightdata_out_o Output g_DATAWIDTH*g_NUM_OF_PIXELS-1: 08-bit, 10-bit, 12-bit, 14-bit, 16-bit, and RGB-888 (24-bit) with one pixel per clock. 32-bit, 40-bit, 48-bit, 56-bit, 64-bit, and 96-bit with four pixels per clock.line_valid_o Output1Data valid output. Asserted high when data_out_o i svalidframe_start_o Output1Asserted high for one clock when frame start isdetected in the incoming packetsframe_end_o Output1Asserted high for one clock when frame end isdetected in the incoming packetsframe_valid_o Output1Asserted high for one clock for all active lines in aframeline_start_o Output1Asserted high for one clock when line start isdetected in the incoming packetsline_end_o Output1Asserted high for one clock when line end isdetected in the incoming packetsword_count_o Output16-bits Represents the pixel value in bytesecc_error_o Output 1 Error signal which indicates ECC mismatchdata_type_o Output8-bits Represents Data type of packetTable 2 • Input and Output Ports for Native Video Interface (continued)3.3AXI4 Stream PortThe following table lists the input and output ports of the AXI4 Stream Port.3.4Configuration ParametersThe following table lists the description of the configuration parameters used in the hardwareimplementation of the MIPI CSI-2 Rx Decoder block. They are generic parameters and can vary based on the application requirements.Table 3 • Ports for AXI4 Stream Video InterfacePort NameType Width DescriptionRESET_N_I Input 1bit Active low asynchronous reset signal to design.CLOCK_I Input 1bitSystem clock TDATA_O Output g_NUM_OF_PIXELS*g_DATAWIDTH bit Output Video Data TVALID_O Output 1bit Output Line Valid TLAST_O Output 1bit Output frame end signal TUSER_OOutput4bitbit 0 = End of frame bit 1 = unused bit 2 = unusedbit 3 = Frame Valid TSTRB_O Output g_DATAWIDTH /8Output Video Data strobe TKEEP_OOutputg_DATAWIDTH /8Output Video Data KeepTable 4 • Configuration ParametersName DescriptionData Width Input pixel data width. Supports 8-bits, 10-bits, 12-bits, 14-bits, 16-bits, and 24-bits (RGB 888)Lane WidthNumber of MIPI lanes.•Supports 1, 2, 4, and 8 lanesNumber of PixelsThe following options are available:1: One pixel per clock4: Four pixels per clock with pixel clock frequency reduced four times (available only in 4 lane or 8 lane mode).Input Data InvertThe options to invert the incoming data are as follows:0: does not invert the incoming data 1: inverts the incoming dataFIFO Size Address Width of Byte2PixelConversion FIFO, Supported in Range: 8 to 13.Video InterfaceNative and AXI4 Stream Video Interface3.5Timing DiagramThe following sections show the timing diagrams.3.5.1Long PacketThe following illustration shows the timing waveform of the long packet. Figure 4 • Timing Waveform of Long Packet3.5.2Short PacketThe following illustration shows the timing waveform of the frame start packet. Figure 5 • Timing Waveform of Frame Start PacketLicense4LicenseMIPICSI2 RxDecoder IP clear RTL is license locked and the encrypted RTL is available for free.4.1EncryptedComplete RTL code is provided for the core, allowing the core to be instantiated with the SmartDesigntool. Simulation, synthesis, and layout can be performed within Libero® System-on-Chip (SoC). The RTLcode for the core is encrypted.4.2RTLComplete RTL source code is provided for the core.Installation Instructions5Installation InstructionsThe core must be installed into Libero software. It is done automatically through the Catalog updatefunction in Libero, or the CPZ file can be manually added using the Add Core catalog feature. Once theCPZ file is installed in Libero, the core can be configured, generated, and instantiated withinSmartDesign for inclusion in the Libero project.For further instructions on core installation, licensing, and general use, refer to the Libero SoC OnlineHelp.Resource Utilization6Resource UtilizationThe following table shows the resource utilization of a sample MIPI CSI-2 Receiver Core implemented ina PolarFire FPGA (MPF300TS-1FCG1152I package) for RAW 10 and 4-lane configuration.Table 5 • Resource UtilizationElement UsageDFFs13274-input LUTs1188LSRAMs12。
mipi csi2标准
MIPI CSI-2（MIPI Camera Serial Interface 2）是一种用于连
接图像传感器和图像处理器的串行接口标准。
它是由Mobile Industry Processor Interface（MIPI）联盟制定的，旨在提供高速、低功耗和
高带宽的图像传输解决方案。
MIPI CSI-2标准支持单个或多个图像传感器，并且可以在不同设备之间传输图像和控制数据。
它使用高速串行差分信号传输数据，支
持多种数据格式和解析度。
该标准定义了CSI-2主机和CSI-2设备之间的物理层和数据链路
层规范，包括信号传输速率、电气特性、协议和控制命令等。
它还定
义了一些特性，如图像流的错误检测和纠正、时钟同步和功耗管理等。
使用MIPI CSI-2接口可以实现高质量、低延迟和低功耗的图像
传输，广泛应用于移动设备、汽车电子、工业视觉和机器视觉等领域。
mipi csi2标准摘要：1.MIPI CSI2 标准的概述2.MIPI CSI2 标准的主要特点3.MIPI CSI2 标准的应用领域4.MIPI CSI2 标准的优势和影响正文：MIPI CSI2（MIPI Camera Serial Interface 2）标准是一种由MIPI 联盟（MIPI Alliance）制定的串行接口标准，主要用于摄像头模块与主处理器之间的数据传输。
在智能手机、平板电脑、汽车和其他消费电子产品中，MIPI CSI2 标准已经成为了摄像头传感器与处理器之间通信的主流标准。
MIPI CSI2 标准的主要特点包括以下几点：1.高性能：MIPI CSI2 支持高速数据传输，最高可达12Gbps，满足了高分辨率摄像头和实时图像处理需求。
2.低功耗：MIPI CSI2 采用了先进的低功耗设计，有助于延长设备续航时间。
3.灵活性：MIPI CSI2 支持多种数据传输模式，可以根据实际应用场景进行选择，提高了系统设计的灵活性。
4.兼容性：MIPI CSI2 具有很强的向下兼容性，可以兼容之前的MIPI CSI1 标准，便于设备升级和扩展。
MIPI CSI2 标准在以下领域得到了广泛应用：1.智能手机和平板电脑：在这些设备中，MIPI CSI2 标准用于摄像头模块与主处理器之间的数据传输，支持高品质图像和实时图像处理。
2.汽车电子：在汽车电子领域，MIPI CSI2 标准被用于行车记录仪、倒车影像、自动驾驶等摄像头系统，保障驾驶安全。
3.物联网：MIPI CSI2 在物联网领域也有广泛应用，如智能家居、工业自动化等场景，提高了设备间的数据传输效率。
MIPI CSI2 标准的优势和影响主要体现在以下几点：1.提高了摄像头系统的性能：MIPI CSI2 的高速数据传输能力使得摄像头模块可以与主处理器进行高效通信，提高了整个系统的性能。
2.降低了功耗：MIPI CSI2 的低功耗设计有助于延长设备的续航时间，提升了用户体验。
mipi csi2标准MIPI CSI-2（Camera Serial Interface 2）是一种用于将摄像头传感器与处理器之间传输图像和控制数据的接口标准。
MIPICSI-2标准定义了一整套硬件和软件接口规范，以确保不同厂商的摄像头和处理器能够互通。
MIPI CSI-2标准包括以下方面的内容：1. 物理层：MIPI CSI-2使用低压差分信号传输（LVDS），通过串行传输方式将图像和控制数据传输到处理器。
支持多通道连接，可以同时传输多个摄像头的数据。
标准规定了传输时钟频率、电压电平和差分信号的编码、调整和解码方式。
2. 数据格式：MIPI CSI-2支持多种数据格式，包括RAW、YUV和RGB格式。
标准规定了各种数据格式的编码方式、位宽和数据排列方式。
3. 控制信号：MIPI CSI-2定义了控制信号的接口规范，包括传输控制信号、触发信号和配置信号。
标准规定了控制信号的编码方式、电平范围和传输协议。
4. 数据包格式：MIPI CSI-2将图像和控制数据分成多个数据包进行传输。
每个数据包包括一个包头和一个数据载荷。
标准规定了数据包的格式、长度和传输顺序。
5. 错误检测和纠正：MIPI CSI-2标准支持错误检测和纠正机制，可以检测和修复传输过程中的错误。
标准规定了错误检测和纠正的算法和流程。
6. 电源和时钟管理：MIPI CSI-2标准定义了电源和时钟管理接口规范，包括电源控制信号和时钟同步机制。
标准规定了电源和时钟管理的操作方式和控制协议。
7. 兼容性和互操作性测试：MIPI CSI-2标准要求设备生产厂商进行兼容性和互操作性测试，以确保不同厂商的摄像头和处理器能够正常工作。
测试内容包括物理层电气特性测试、数据格式和控制信号测试、数据包传输测试和性能测试等。
以上是关于MIPI CSI-2标准的相关参考内容，该标准涵盖了物理层、数据格式、控制信号、数据包格式、错误检测和纠正、电源和时钟管理以及兼容性和互操作性测试等方面的规范。
