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TMS320VC5470ZHKA Datasheet(PDF) 23 Page - Texas Instruments |
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TMS320VC5470ZHKA Datasheet(HTML) 23 Page - Texas Instruments |
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23 / 94 page  DSP Subsystem Functional Overview 14 December 2001 − Revised December 2002 SPRS017B 3.2.4 API Boot-Mode DSP Memory Map The memory map when the API boot mode feature is enabled is shown in Figure 3−3. API boot mode is enabled when DSP_REG[9] (DSP_APIBN) is 0 and BSCR[4] (ABMDIS) is 0. Hex Page 0 Program, MP/MC = 1 (Microprocessor Mode) Hex Page 0 Program, MP/MC = 0 (Microcomputer Mode) Hex Data 0000 OVLY = 1 OVLY = 0 0000 OVLY = 1 OVLY = 0 0000 Memory Mapped Registers, 007F Reserved External Program Space 007F Reserved External Program Space 007F Memory Mapped Registers, Scratch-Pad RAM 0080 On-chip Data DARAM 0080 On-chip Data DARAM 0080 On-chip Data DARAM (8K−0x80 Words) 1FFF DARAM 1FFF DARAM 1FFF (8K−0x80 Words) 2000 External Program 2000 External 2000 On-chip Data DARAM, API-Accessible 37FF On-chip Data DARAM, External Program Space 37FF On-chip Data DARAM, External Program Space 37FF API-Accessible (8K Words) 3800 DARAM, API-accessible Space 3800 DARAM, API-accessible Program Space 3800 (shadowed portion) 3FFF 3FFF 3FFF (shadowed portion) 4000 On-chip Data SARAM 4000 On-chip Data SARAM 4000 On-chip Data SARAM (8K Words − data only) 5FFF On-chip Data SARAM 5FFF On-chip Data SARAM 5FFF On-chip Data SARAM (8K Words − data only) 6000 6000 6000 On-chip Data SARAM (8K Words) 7FFF On-chip Data SARAM (8K Words) 8000 External Data Space Memory BFFF External Data Space Memory External Program Space External Program Space C000 DROM=1 DROM=0 External Program Space External Program Space DFFF On-chip Program SARAM (8K Words) External Data Space E000 On-chip Program SARAM Space Memory F7FF F7FF F7FF Program SARAM (6K Words) F800 Shadowed API DARAM (2K) F800 Shadowed API DARAM (2K) F800 External Data Space Memory FFFF Shadowed API DARAM (2K) FFFF Shadowed API DARAM (2K) FFFF External Data Space Memory † When DSP_REG[9] (DSP_APIBN) = 0 and BSCR[4] (ABMDIS) = 0, 2K words of the API DARAM are remapped to program-space, regardless of DSP_REG[10] (MP/MC) value. All other internal program-space RAMs are disabled in program space. Overlayable data-space RAMs may be dual-mapped to program-space via OVLY. Figure 3−3. API Boot Mode Memory Map for DSP Accesses (DSP_APIBN = 0 and ABMDIS = 0)† |
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