Public Version
PRCM Functional Description
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2. Software clears the PRCM.
[1] RST2_IVA2 bit. The PRM module releases the
IVA2_RSTPWRON reset signal when reset manager 2 in the IVA2 power domain times out.
3. On release of IVA2_RSTPWRON, the IVA2.2 subsystem performs an initialization sequence.
4. The IVA2.2 subsystem asserts the IVA2_RST_DONE signal when initialization completes.
5. The PRM module releases the IVA2_RST2 reset signal.
6. The PRCM.
[9] IVA2_SW_RST2 status bit is updated accordingly on release of the
IVA2_RST2 reset signal. The MPU software can now program the MMU or download the DSP code.
7. Software clears the PRCM.
[0] RST1_IVA2 bit. The PRM module waits for reset
manager 1 in the IVA2 power domain to time out.
8. The PRM module releases the IVA2_RST1 reset signal. The DSP boots.
9. The PRCM.
[8] IVA2_SW_RST1 status bit is updated accordingly on release of the
IVA2_RST1 reset signal.
10. DSP software enables the video sequencer (SEQ) clock.
11. DSP software clears the PRCM.
[2] RST3_IVA2 bit. The PRM waits for reset
manager 3 in the IVA2 power domain to time out.
12. After reset manager 3 times out, the PRM can release the IVA2_RST3 reset signal. The SEQ boots.
13. The PRCM.
[10] IVA2_SW_RST3 bit is updated accordingly on release of the
IVA2_RST3 reset signal.
3.5.1.9.4 IVA2 Software Reset Sequence
This section describes the software reset sequence and timing relationships of the IVA2.2 subsystem.
The assumptions are:
•
The MPU is running.
•
All sources of reset to the IVA2.2 subsystem are released.
•
The software ensures that the IVA2.2 subsystem software sources of reset are not asserted while the
IVA2 power domain clocks are running.
•
The software clears the previous reset status.
shows the IVA2 software reset sequence.
274
Power, Reset, and Clock Management
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 ...