OCP Profiles Discussion Input C. Sucur Texas Instruments 7/15/2004

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OCP ProfilesDiscussion InputC. Sucur Texas
Instruments7/15/2004
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General Purpose Profile

• Application
• Standard IP cores handling both random and
  DMA-like accesses
• Features
• 32 bit address
• No address space support
• Request and response handshake
• May be single- or multi-threaded
• Aligned INCR and STRM bursts
• Use of MReqLast and SRespLast for imprecise
  bursts handshake
• Use of MFlag and SFlag for additional error
  reporting
• Test, control and status unused

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General Purpose Profile Data Flow
Master
Slave
MCmd, MAddr, MBurstLength, MBurstPrecise, MData,
MByteEn, MReqLast, MReqInfo
SCmdAccept
SData, SResp, SRespLast
MRespAccept
MThreadBusy
SThreadBusy
MCmd IDLE RD WR WRNP RDEX MBurstSeq
INCR STRM multi-threaded
connections only
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General Purpose Profile Sideband
Master
Slave
MError, MFlag
SError, SFlag
MReset_n
SReset_n