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changes.mady.by.user Larry Ruckman

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New Version 28

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Byte OffsetNameDescriptionNote
0

Header

  • Version number
  • Operation Type
  • Device Address


  • BIT[2:0] = 0x1
  • BIT[3]:
    • 0x1 = READ
    • 0x0 = WRITE
  • BIT[7:4] = Device index on daisy chain
1RegAddr[31:24]Register Address
  • In units of bytes
  • RegAddr[1:0] must be zero for 32-bit address alignment
2RegAddr[23:16]
3RegAddr[15:8]
4RegAddr[7:0]
5WriteData[31:24]Write Data
  • Only used for write operations
6WriteData[23:16]
7WriteData[15:8]
8WriteData[7:0]
9FooterResponds  Valuevalue is
  • footer bitwise OR'd for all daisy chain responds

ASIC Outbound (FPGA Inbound) Response Format

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