DSP

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DSP

• ???? ???? 4
• ???? ??????? ????? ??????? ??????

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???? ???????

• ???? - 1Mb
• ???? ?? ???? - 0.5Mb
• Program memory - Dual ported
• Data memory - Dual ported
• ?????? ??? ????
• PM/DM ????? (Addr) ??????? (Data)
• I/O port ????? (Addr) ??????? (Data)

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(No Transcript)
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EZ-KIT memory map
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???? ???????????

• !-------------------------------------------------
  --------------------
• .SYSTEM SHARC_EZKIT_Lite
• !
• ! This architecture file is required for used
  with the SHARC EZ-KIT
• ! Lite development software. It is structured for
  use with the C
• ! compiler but also can be used with assembly
  code.
• !
• ! This architecture file allocates
• ! Internal 133 words of 48-bit run-time header
  in memory block 0
• ! 16 words of 48-bit initialization
  code in memory block 0
• ! 619 words of 48-bit kernel code in
  memory block 0
• ! 7424 words of 48-bit C code space in
  memory block 0
• ! 4K words of 32-bit PM C data space
  in memory block 0
• !
• ! 8K words of 32-bit C DM data space
  in memory block 1
• ! 4K words of 32-bit C heap space in
  memory block 1
• ! 3712 words of 32-bit C stack space
  in memory block 1
• ! 384 words of 32-bit kernel data in
  memory block 1

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• /
  
• File Name DSP-LAB exe1
• Author ALon Slapak
• Date 13.10.02
• 
  /
• define N 5
• .SEGMENT /DM seg_dmda
• .VAR input N 1, 5, 2, 4, 3
• .ENDSEG
• .SEGMENT /PM seg_rth
• initial_setup
• jump start (db)
• pmwait0x0021
• dmwait0x8421

seg_dmda
seg_rth
seg_pmco
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DAG Data Address Generator

• ??? ??????
• DAG1 ?????? ?-DM - 32b
• DAG2 ?????? ?-PM - 24b
• 4 ???? ????????
• Index (I) - ????? ?????? ???????
• Modify (M) - ???? ???? ??????? I
• Base (B) - ????? ?????? ?-Buffer
• Length (L) - ???? ?-Buffer

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???? ????????? ?-DAG
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Pre-modify v. Post-modify
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???? ????? - Circular Buffer
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???? ????? ???? ?????

• ???? ????? ??????? ????? ??????? ?????? ?-B
• I ?????? ???????? ???? ?? B
• ???? ???? ????? ????? ????? ???? ??????? ?-L
• ???? ???? ??? (????? ?? ?????) ??? ????? ?????
  ?-M
• ?? ????? PM(Ix,My) ?? DM(Ix,My) ????? ?? I ???
  ?????? ?-Post-modify

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???? ????? PM/DM