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The CC1100 is a second-generation digital multimedia processor with the appearance shown in Figure 1.
The CC1100 is designed with a programmable multi-core processor SoC architecture. The main CPU is a superscalar RISC processor with a frequency of 350MHz. It runs the Linux operating system. It can execute 4 instructions per instruction cycle and supports hardware dual-threading technology. Video codec work is done in stages by three programmable but different architecture sub-processors (256-bit vector processor, Motion Estimation engine and Entropy engine). The heterogeneous multi-DSP architecture decomposes the processing process of complex moving images into multiple relatively independent processes according to its function and computational complexity characteristics, and then uses different architectures of processors to adapt and process the motion image in the encoding and decoding process. Complexity changes, balance performance, flexibility and power consumption. Figure 2 is a block diagram of the internal structure of the CC1100.
The innovative architecture design allows the CC1100 to handle video CODECs in a variety of formats with high performance at a lower frequency. The post-processing and analog output tasks of the video display are done by the hardware unit, which supports four OSD layer image display overlays, scaling and 2D acceleration. The interconnection of all internal function blocks is done by the high speed DMA channel and the internal bus. The integrated memory controller supports dual-channel DDRII-667 memory, which provides enough storage bandwidth for complex video processing. The CC1100 integrates peripheral interfaces such as PCI-Express, SATA-II, USB2.0 OTG and SDIO, which can be connected to networks, high-speed hard disks, SD cards and portable USB devices.
The difference with the T1 product is that the T1 DSP has developed earlier and has higher versatility. It can process audio, video, medical information, scientific computing and other data. TI's DSP video encoding and decoding work is done with a general-purpose processor. . Most general-purpose video SoCs use a general-purpose programmable DSP to process video, and simply increase the frequency to ensure that video processing requires computing resources. The increase in frequency will increase the complexity and cost of PCB design. There are also some low-end video SoCs that process video entirely through hardware modules. At the expense of flexibility in exchange for the performance required for video processing.
The CC1100's multimedia chip is a DSP optimized for audio, video and imaging applications. It is highly targeted, efficient and compatible with the latest network technologies (Gigabit Ethernet and 802.11n WiFi).
The CC1100's video codec work is coordinated in stages by three programmable but different architecture sub-processors. Compared to general purpose DSP or DSP SoC.
The CC1100 chip architecture has realized a variety of independent intellectual property rights DSP technology innovation. It supports encoding and decoding and transcoding of various video formats such as MPEG-2, H.264, MPEG-4.2, VC-1, RM, Flash and MJEPG. Support multi-speed video transcoding. The transcode quality can be up to standard definition, MPEG-2 and JPEG decoding up to HD (720p/1080i) and other formats of codec and transcode quality up to standard definition (D1). Figure 3 and Figure 4 show the performance parameters of the CCll00 multimedia processing chip. The development process of CC1100 developer Beijing Xitu ding Technology Co., Ltd. (C2) can refer to the article:
At present, CC1100 is mainly used in six fields: high-definition MPEG-2 video decoding, audio and video multi-format transcoding, air-shifting TV, intelligent network television, external personal digital video recorder and security system webcam.
First, the functional characteristics Figure 5 is the LJAV-DVR (CC)-01 network high-definition hard disk recorder produced by the blue ship audio and video research and development team using CC1100 processor chip. The size of the whole machine is 13cm×13cm×2.8cm, and the built-in 250GB/320GB/500GB 2.5-inch serial hard disk has the following features:
1. Streaming video playback: Support most video formats such as: MPEG1/2/4, DVD, VOB, VCD, SVCD, AVI, DIVX, XVID, WMV, ASF, MP4, RM, RMVB, TS/DSP/ INK/FLV/H264 (.mp4, .mov, .avi, .mkv), VC-1 (.wmv, asf), MPEG1/2/4 (.ts, .vob, .dat, .mp4, .avi, .divx, .xvid), WMV7/8/9 (.wmv, .asf), FLASH (.flv) video format; support video format decoding.
2. Audio format support: WAV, FLAC, MP3, WMA, OGG, AAC, LRC subtitle synchronization is not displayed.
3. Electronic photo album: Support image format: JPEG, BMF, TIFF, GIF, MJPG, can slide show, support rotation, zoom, move pictures.
4. Supported external devices: broadband network, SATA interface hard disk, USB2.0 storage device, SD card. 2.5-inch hard drive with SATA interface. Built-in capacity range from 20GB to 1000GB. External hard disk capacity; hard disk capacity is optional, support FAT32/NTFS hard disk partition format.
5. Multi-interface output: optical digital output. Color difference signal (720p/1080i,), composite video AV output; support digital camera, digital video camera, DVD and TV audio and video input.
6. Digital TV recording, DVD-quality video quality, high-quality restore program source image (720 × 576). Using leading MPEG-4 decoding.
7. One-click playback function: picture, music, movie, document one-click playback and management.
File editing function: Copy and delete files without leaving the computer.
8. File Firmware Upgrade: This product will continue to develop new features and improve new features.
Second, a variety of play methods Because the LJAV-DVR (CC)-01 network high-definition hard disk recorder is powerful, audio and video enthusiasts have a variety of gameplay. Such as:
1. Pocket home video recorder: powerful streaming media recording and playback function is currently any home hard disk player and video recorder such as AML7228 RM / RMVB player and ARM9 program video recorder can not compete; it can save the video program The network hard disk or the built-in hard disk can also be saved in an external USB storage device (such as a mobile hard disk/U disk/SD card, etc.): and can be stored in a network hard disk and a built-in hard disk and an external USB storage device. The audio and video files of the device. Since digital TV has been opened in many cities, the audio and video output of the set-top box is very convenient to connect to the recorder, and then connected to the TV, it is convenient to record the TV.
2. The machine can be used for home security. The built-in 320GB/500GB hard drive can record 600/1000 hours of long-term video programs, and many home video recorders on the market are equipped with 160GB hard drives. Easy to implement professional surveillance video at home. Through the video input port. Connect with the camera (with AV output function), press the remote control button, go to the corresponding input source, the screen will display the captured screen, turn on the “recordingâ€, and record the captured monitoring content into the hard disk, it is You guard your family's safety.
3. Musical jukebox. The machine can play digital audio such as WAV/FLAC/MP3, and CC1100 does not need to install radiator and fan. Networking with the computer makes it easy to build the machine into a fever music player, which is a CD copy. Online music downloads in one. Fool-like operation, PC-style management. In particular, WAV and lossless audio FLAC. may attract the attention of audiophiles. As shown in Figure 6.
Third, the firmware upgrade LJAV-DVR (CC)-01 machine upgrade firmware is relatively simple, just download an upgrade software to the U disk on the relevant website, then plug the U disk into the machine's USB port, boot, according to the menu prompts whether to upgrade Press the ENTER button to become a different machine, and the hardware of the machine does not have to be changed. Such as:
1. For the functions developed in the surveillance field, just connect the USB camera and the USB keyboard. You can do everything.
2. CC1100's powerful encoding function enables single-chip simultaneous 8-channel CIF resolution encoding (MPEG-4). At the same time, it also supports D1 HD resolution 30fps video playback, encoding and decoding capabilities are also suitable for video conferencing systems.
3. For digital TV and network TV recorders developed by the broadcasting industry, modules embedded in various digital TV products can receive and record mobile digital TVs, and can record hundreds of network TV stations and several network radio stations. Manufacturers can also integrate the CC1100's motherboard with a portable display to truly realize digital TV anytime, anywhere, and develop more cost-effective products.
4. The CC1100 single-chip solution easily integrates time shifting, recording, streaming and networking functions on flat panel (liquid crystal and plasma) TVs.
5. Because CC1100 adopts highly optimized H264 codec algorithm, it can be used in the stream of 700kbps~1.2Mbps. Provides broadcast quality of FULLD1 size DVD quality, reducing IPTY's network bandwidth requirements. The CC1100 can be developed into a new generation of IPTV digital TV set-top boxes based on public Internet or proprietary networks. Can support IPTV various applications at the same time, including live broadcast. Channels are moved back to watch, on-demand and other interactive value-added services. In the wireless network connection, the digital TV set-top box can adopt an external independent wireless network card, which can relieve the trouble of the home broadband network wiring, and is connected with the home wireless router.
Available anywhere in the home. Watch TV in the living room, bedroom and dining room.
6. With all the above functions, you can also develop support for wired broadband and WI-FI wireless Internet access. It is easy to realize the new functions of IP set-top boxes such as P2P network movies and other media downloads, web browsing, and web chat, and truly enjoy the infinite charm brought by the network era.
7. Developed a portable network media recorder with LCD display, accessing the Internet, sending and receiving emails, office document input and editing, QQ or MSN chat, watching movies, playing games, etc. is no longer a dream.
8. C2's 3rd generation product: based on all the above functions. Increase the true full HD 1080p decoding. Standard HD interface HDMI output.
9. Because it is a domestic chip. Its supply channel and price are more competitive than foreign chips. It can integrate with various electronic systems such as in-vehicle electronics and security monitoring, and gradually expand and eventually form a strong industrial cluster.
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