dss-071
Coef(n – 1)
8-bit (signed)
R (n + 1)
8-bit (unsigned)
Shifted value (right by 7)
11-bit (signed)
R (n – 1)
8-bit (unsigned)
Coef(n)
8-bit (unsigned)
R (n)
8-bit (unsigned)
Coef(n + 1)
8-bit (signed)
Adder
18-bit (signed)
Clipping to [0:255]
8-bit (unsigned)
R component for pixel n
8-bit (unsigned)
_
_
.
_
_
_
.
DISPC
LCD SIZE PPL
h ratio
DISPC VID SIZE VidSizeX
=
_
_
_
.
_
_
_
.
DISPC VID PICTURE
SIZE VidOrgSizeY
v ratio
DISPC VID SIZE VidSizeY
=
_
2
_
v ration
Ratio
h ratio
=
´
1
_
2
v ratio
<
£
_
_
2
max(
,
)
2
_
2 ( _
1)
v ration
v ration
Ratio
h ratio
h ratio
-
=
´
´
-
1
_
4
v ratio
<
£
If
If
dss_swpu108-E135
DISPC_SIZE_LCD
2
dss_swpu108-E136
_
_
_
.
_
_
.
DISPC VID PICTURE
SIZE VidOrgSizeX
Ratio
DISPC VID SIZE VidSizeX
=
Public Version
Display Subsystem Functional Description
www.ti.com
Figure 7-77. Resampling Macro-Architecture (3-Coefficient Processing)
To determine if the minimum functional clock matches the down sampling ratio and the desired Pixel
clock, the following formula must be used in conjunction with
and
Ratio V when performing a vertical down-sampling only
NOTE:
For frequency ratio calculation on the TV output, it is correct to replace
with
When the down-sampling ratio is below 0.5, it is not possible to use a video in full screen.
Ratio H when performing a horizontal down-sampling only
Ratio H+V when performing a horizontal and vertical down-sampling
Ratio = max (horizontal Ratio, vertical Ratio) as previously defined.
1646
Display Subsystem
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 ...