Public Version
www.ti.com
Camera ISP Integration
•
The module has finished any current transaction and does not generate any more traffic on the
interconnect.
•
The module is idle (on-going transactions are finished).
The MIDLE_MODE bit field allows the following settings for the camera ISP module:
•
Force standby
The camera ISP is set to force standby when MIDLE_MODE is set to 0x0. In this mode, the camera
ISP module asserts its HW standby request to the PRCM as soon as it is disabled. Namely, the
camera ISP is disabled when the following bit fields are set to 0x0:
–
[13] RSZ_CLK_EN
–
[12] PRV_CLK_EN
–
[11] HIST_CLK_EN
–
[10] H3A_CLK_EN
–
[8] CCDC_CLK_EN
Moreover, CSI2A and CSI2C receivers must also be disabled by setting the related
IF_EN bits to 0x0 and CSI1/CCP2B must also be disabled by setting the related
[0]
IF_EN bits to 0x0.
•
No standby
The camera ISP is set to no standby when MIDLE_MODE is set to 0x1. In this mode, the camera ISP
module never asserts its standby request to the PRCM. This also prevents the CAMERA power
domain from going to a lower power state. Refer to
, Power, Reset, and Clock Management,
for further details.
•
Smart standby
The camera ISP module is set to smart standby when MIDLE_MODE is set to 0x2. In this mode, the
camera ISP module asserts its HW standby request to the PRCM according with its internal activity
(namely, when there is no more activity on the camera ISP master interface, that is, when there is no
more data in the central resource buffer).
NOTE:
The CSI1/CCP2B receiver must also be configured to smart standby mode when the
camera ISP is set to smart standby (
[13:12] MSTANDBY_MODE set to
0x2).
CSI2A and CSI2C receivers must also be configured to smart standby mode when the
camera ISP is set to smart standby (
[13:12] MSTANDBY_MODE set to
0x2).
A standby request asserted to the PRCM does not necessarily lead to CAM_FCLK and CAM_ICLK being
cut. The PRCM must also be set correctly for that purpose.
The clocks are cut, allowing a CAMERA power state change if:
•
PRCM.CM_ICLKEN_CAM[0] EN_CAM = 0 and PRCM.CM_FCLKEN_CAM[0] EN_CAM = 0
•
PRCM.CM_FCLKEN_CAM[0] EN_CAM = 0, (PRCM.CM_ICLKEN_CAM[0] EN_CAM =1,
PRCM.CM_AUTOIDLE_CAM[0] = 1, and a domain transition is required at PRCM level)
See
, Power, Reset, and Clock Management, for further details.
6.3.1.3
Camera ISP Power Domain
The camera ISP belongs to the CAMERA power domain. For more information about the CAMERA power
domain, see
, Power, Reset, and Clock Management.
6.3.1.4
Camera ISP Resets
6.3.1.4.1 Camera ISP Hardware Reset
Global reset of the camera ISP module is accomplished by activation of the CAM_RST signal in the
CAMERA domain (for more information, see
, Power, Reset, and Clock Management).
1143
SWPU177N – December 2009 – Revised November 2010
Camera Image Signal Processor
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 ...