參數(shù)資料
型號(hào): TMS320DM355_07
廠商: Texas Instruments, Inc.
英文描述: Digital Media System-on-Chip (DMSoC)
中文描述: 數(shù)字媒體系統(tǒng)芯片(DMSoC)
文件頁數(shù): 120/158頁
文件大?。?/td> 1319K
代理商: TMS320DM355_07
www.ti.com
P
PCLK
(Positive Edge Clocking)
18
20
HD
VD
PCLK
(Negative Edge Clocking)
5.9.2
Video Processing Back-End (VPBE)
TMS320DM355
Digital Media System-on-Chip (DMSoC)
SPRS463B–SEPTEMBER 2007–REVISED OCTOBER 2007
Table 5-20. Switching Characteristics Over Recommended Operating Conditions for VPFE (CCD) Master
Mode (see
Figure 5-26
)
DM355
MIN
3
3
NO.
PARAMETER
UNIT
MAX
18
20
t
d(PCLKL-HDIV)
t
d(PCLKL-VDIV)
Delay time, PCLK edge to HD invalid
Delay time, PCLK edge to VD invalid
11
11
ns
ns
Figure 5-26. VPFE (CCD) Master Mode Control Output Data Timing
The Video Processing Back-End of VPBE module is comprised of the On Screen Display (OSD) module
and the Video Encoder / Digital LCD Controller (VENC/DLCD).
5.9.2.1
On-Screen Display (OSD)
The primary function of the OSD module is to gather and blend video data and display/bitmap data and
then pass it to the Video Encoder (VENC) in YCbCr format. The video and display data is read from
external DDR2/mDDR memory. The OSD is programmed via control and parameter registers. The
following are the primary features that are supported by the OSD.
Support for two video windows and two OSD bitmapped windows that can be displayed simultaneously
(VIDWIN0/VIDWIN1 and OSDWIN0/OSDWIN1).
Video windows supports YCbCr data in 422 format from external memory, with the ability to
interchange the order of the CbCr component in the 32-bit word
OSD bitmap windows support 1/2/4/8 bit width index data of color palette
In addition one OSD bitmap window at a time can be configured to one of the following:
YUV422 (same as video data)
RGB format data in 16-bit mode (R=5bit, G=6bit, B=5bit)
24-bit mode (each R/G/B=8bit) with pixel level blending with video windows
Programmable color palette with the ability to select between a RAM/ROM table with support for 256
colors.
Support for 2 ROM tables, one of which can be selected at a given time
Separate enable/disable control for each window
Programmable width, height, and base starting coordinates for each window
External memory address and offset registers for each window
Support for x2 and x4 zoom in both the horizontal and vertical direction
Pixel-level blending/transparency/blinking attributes can be defined for OSDWIN0 when OSDWIN1 is
configured as an attribute window for OSDWIN0.
Support for blinking intervals to the attribute window
Ability to select either field/frame mode for the windows (interlaced/progressive)
An eight step blending process between the bitmap and video windows
Transparency support for the bitmap and video data (when a bitmap pixel is zero, there will be no
DM355 Peripheral Information and Electrical Specifications
120
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