Data bus bridge and its working method
A data bus and working method technology, applied in the direction of bus network, data exchange through path configuration, electrical components, etc., can solve problems affecting system stability and reliability, incapable of data communication, complicated control process, etc., to achieve structural The effect of simplicity, strong anti-interference performance and high data transmission rate
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[0035] As shown in Figure 4, the data bus bridge is an application-specific integrated circuit ASIC (i.e. CPLD or FPGA, in other embodiments, also can adopt DSP or ARM), comprising: physical interface unit 1, data link unit 2, FIFO (multi-channel Data buffer management) unit 3 , DMA control unit 4 , arbitration mechanism unit 5 and physical memory unit 6 .
[0036] Still see Figure 4, the main functions of each unit are as follows:
[0037] Physical interface processing unit 1: realize the mapping relationship between 8 physical links (Port a, Port b, Port c, Port d, Port e, Port f and Port g) and up to 128 logical channels, and convert the Data is redistributed according to different logical channels. Data of up to 16 logical data links can be transmitted on a physical link (a physical link refers to a wired or wireless transmission channel, excluding any switching nodes in the middle. Logical channels have a logical control relationship, because adjacent When transmitting da...
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