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IVA2.2 Subsystem Memory Space Mapping
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2.4
IVA2.2 Subsystem Memory Space Mapping
This section describes the hardware accelerators of IVA2.2. In unavailable modules and features, the
memory area is reserved, read is undefined, and write can lead to unpredictable behavior.
The device includes the high-performance Texas Instruments IVA2.2. For more information, see
, IVA2.2 Subsystem.
This section describes how internal memories and registers of the IVA2.2 are accessed through the L3
interconnect and by the internal initiators of the IVA2.2 (the digital signal processor [DSP] and the
enhanced direct memory access [EDMA]).
Three views of the IVA2.2 subsystem memory space mapping are provided:
•
L3 interconnect view: External view (subsystem memories and configuration registers) as seen by the
MPU subsystem and most of the initiators of the platform through the L3 interconnect
•
IVA2.2 DSP view: Internal view as seen by the DSP
•
IVA2.2 EDMA view: Internal view as seen by the EDMA
NOTE:
The IVA2.2 subsystem also contains a local interconnect with its own memory space
mapping that can be accessed only by the DSP and the video accelerator and sequencer in
the IVA2.2 subsystem. For more information about this video accelerator/sequencer local
interconnect and its memory space mapping, see
, IVA2.2 Subsystem.
2.4.1 IVA2.2 Subsystem Internal Memory and Cache Allocation
2.4.1.1
IVA2.2 Subsystem Memory Hierarchy
The IVA2.2 subsystem includes the following memory features:
•
L1P (program)
–
32-KB configurable: Memory-mapped (default after reset) or direct-mapped cache—32-byte cache
line
•
L1D (data)
–
32-KB configurable: Memory-mapped (default after reset) or 2-way set associative cache—64-byte
cache line
–
48-KB memory-mapped
•
L2 (program and data)
–
64-KB configurable: Memory-mapped (default after reset) or 2-way set associative cache—128-byte
cache line
–
32-KB memory-mapped
–
16-KB ROM
The local memories can be used as cache RAMs or memory-mapped RAMs, depending on the
configuration of the different memory controllers in the IVA2.2 subsystem.
shows the memory hierarchy of the IVA2.2 subsystem.
218
Memory Mapping
SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated
Содержание OMAP36 Series
Страница 174: ...174 List of Tables SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 692: ...692 MPU Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 1084: ...1084 IVA2 2 Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 1990: ...1990 2D 3D Graphics Accelerator SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2334: ...2334 Memory Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2700: ...2700 Memory Management Units SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2868: ...2868 HDQ 1 Wire SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2974: ...2974 UART IrDA CIR SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3054: ...3054 Multichannel SPI SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3462: ...3462 MMC SD SDIO Card Interface SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3508: ...3508 General Purpose Interface SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3584: ...3584 Initialization SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3648: ...3648 Debug and Emulation SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...