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300
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Figure 10-61. Natural Scan Order
The display buffer is the one created in the example sequence.
When the application is running and uses the portrait orientation for the display (typically, a PDA-type
application):
•
The DSS controller accesses the frame buffer using the 0-degree view.
•
The processor and other initiators, such as 2D DMA or 3D accelerators, use the 90-degree view.
When the application is running and uses the landscape orientation for the display (typically, a video
recorder/player or gaming application):
•
The DSS controller still accesses the frame buffer using the 0-degree view.
•
The processor and other initiators, such as 2D DMA or 3D accelerators, also use the 0-degree
view. See
10.2.5.1.3 Memory-Access Scheduler Configuration
The memory-access scheduler is configured as follows:
•
For each of the three classes, the arbitration parameters are:
–
SMS.
through SMS.
•
One high-priority FIFO queue in the class (HIGHPRIOVECTOR field)
•
Number of consecutive transactions to perform (EXTENDEDGRANT field)
•
Burst transaction submitted for arbitration immediately or after the burst has been buffered
(BURST-COMPLETE field)
10.2.5.1.4 Error Logging
All data transfers in the SMS are full handshake. The SMS uses this capability to signal the system when
a transaction error is detected.
The SMS captures the address of the faulty access in the SMS.
register. The error type
is logged in the SMS.
register. Once a faulty access is logged and the
SMS.
[0] ERRORVALID bit is set, the next faulty accesses cannot be logged before
clearing the ERRORVALID bit.
In the case of an interconnect transaction, an error response is generated if any of the following occur:
•
An incoming request arrives after an idle request from the PRCM.
•
An illegal command is received.
•
A protection region overlap is detected.
•
Protection errors.
2266
Memory Subsystem
SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated
Содержание OMAP36 Series
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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 ...