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Changes between Version 14 and Version 15 of crkit/Software/Firmware/Framework/R3_arch


Ignore:
Timestamp:
Jun 16, 2010, 6:05:41 PM (12 years ago)
Author:
khanhle
Comment:

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  • crkit/Software/Firmware/Framework/R3_arch

    v14 v15  
    4949=== Global Memory Map ===
    5050
    51 R3 global memory map is currently divided into 4 regions : Common control, Common Interrupt Control, Receiver and Transmitter. 65Kbytes are reserved for each region. The total number of address bits are 32-bit, but we will only use the lower 16-bits per region e.g. 65Kbytes per region. Therefore, bits31-28 are used for region address decoding between the individual regions as illustrated in figure 3.
     51R3 global memory map is currently divided into 4 regions : Common control, Common Interrupt Control, Receiver and Transmitter. 65Kbytes are reserved for each region. The total number of address bits are 32-bit, but we will only use the lower 16-bits per region e.g. 65Kbytes per region. Therefore, bits31-28 are used for region address decoding between the individual regions as illustrated in figure 2.
    5252
    5353__Table 1 - R3 Global Memory Map__
     
    6868 
    6969
    70 __Figure 3 - R3 Top Address Decoding__
     70__Figure 2 - R3 Top Address Decoding__
    7171[[BR]][[BR]]
    7272[[Image(r3_addr_dec.jpg)]]
    7373[[BR]][[BR]]
    7474
    75 === Ethernet Frame Formatting ===
    76 In this section, the ethernet frame payload structures are detailed for Host -> HW, and HW -> Host
    77 directions. Some header information are appended to provide additional control information.[[BR]]   
     75=== Packet Formatting ===
     76In this section, the packet structure is detailed. The
     77
     78__Figure 3 - Packet Format__
     79[[BR]][[BR]]
     80[[Image(pkt.jpg)]]
     81[[BR]][[BR]]
     82
     83 
     84for Host -> HW, and HW -> Host directions. Some header information are appended to provide additional control information.[[BR]]   
    7885 
    7986[wiki:Internal/SDR/Firmware/Framework/R3_arch/eth_from_host Host -> HW] : two types of Ethernet frames e.g. rmap and data frames.[[BR]]