參數(shù)資料
型號: GM5060
廠商: Electronic Theatre Controls, Inc.
英文描述: GRAPHICS PROCESSING IC PROVIDING HIGH QUALITY IMAGES FOR LCD MONITORS
中文描述: 圖形處理芯片提供高品質(zhì)的圖像液晶顯示器
文件頁數(shù): 35/85頁
文件大小: 1375K
代理商: GM5060
Genesis Microchip
gm5060 / gm5060-H Data Sheet
February 2002
C5060-DAT-01G
27
4
4
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5
5
I
I
T
T
U
U
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-
R
R
B
B
T
T
6
6
5
5
6
6
V
V
i
i
d
d
e
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o
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The gm5060 accepts an 8-bit YCbCr 4:2:2 video data stream conforming to ITU-R BT656 (D-1)
standards. For further details on the ITU-R BT656 specification, see www.itu.int.
The data and the 27 MHz sampling clock are provided by an external video decoder. The ITU-R
BT656 format provides no separate horizontal or vertical sync (HSYNC, VSYNC) to the
gm5060. The active window is not programmed. Rather, it is interpreted from codes embedded in
the data stream.
Image
Capture
YUV
RealColor
Controls
RGB
Color
Controls
Frame Rate
Conversion
Zoom/
Shrink
Scaling
Triple
ADC
DVI
Rx
ITU656
Decoder
Gamma
Correction
LUT
HDCP
Image
Measurement
Display Timing
& Control
OSD
Frame
Store
Interface
Micro-
processor
(MCU)
Host
Interface
SDRAM
Interface
Analog
RGB
Digital
DVI
Digital YUV
Video
(8-bits)
Serial
Interface
Panel
Interface
.
Clock
Recovery
Input
Color
LUT
(24/48-bits)
Display
Clock
Generation
Figure 19. ITU-R BT656 Block
4.5.1 YCbCr Input Clamping
YCbCr input to the gm5060 is always automatically clamped to restrict the input data to ITU-R
BT601 levels:
Y Bottom clamping:
Y data < 16 is clamped to 16.
Y Top clamping:
Y data > 235 is clamped to 235.
CbCr Bottom clamping:
CbCr data < 16 is clamped to 16.
CbCr Top clamping:
CbCr data > 240 is clamped to 240.
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