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BU1574GUW Datenblatt(PDF) 8 Page - Rohm

Teilenummer BU1574GUW
Bauteilbeschribung  Real Time Video Processor IC
Download  13 Pages
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Hersteller  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BU1574GUW Datenblatt(HTML) 8 Page - Rohm

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Technical Note
8/12
BU1574GUW
www.rohm.com
2009.06 - Rev.A
© 2009 ROHM Co., Ltd. All rights reserved.
CAMHSI
CAMVSI
CAMDIO
-CAMDI7
YSIZE
AIE_YSIZE line
Original image
AIE_YSIZE
-1
Line.
2
Line.
3
Line.
1
Invalid area
AIE_YST line
AIE_YSIZE
CAMCKI
(*1)
Y0
Cb0
Y1
Cr0
Y2
Cb1
Cr1
Y3
Cr158 Y318
Y317 Cr158
*2)
AIE_XSIZE ×2
Y0
Cb0
Y1
Cr0
Y2
Cb1
Cr1
Y3
Cr158 Y318 Cb158
XSIZE ×2
AIE varid area
*2)
YUV_XST
CAMDI0
-CAMDI7
(*3)
CAMHSI
AIE_XST×2
Y318 Cb159 Y319 Cr159
Y318
Image area
8.2. YCbCr with synchronizing signals 8-bit input format
8.2.1. Horizontal direction synchronization timing
Fig.7 Horizontal direction synchronization timing
(Note)
* YUV_XST, XSIZE x 2, AIE_XST x 2 and AIE_XSIZE×2, which are described in the figures and the notes, are set by the registers.
(*1)
By changing the setting of the POL register (INDEX Address: E1h), the polarities of CAMCKI, CAMVSI and CAMHSI can be set independently.
The figure above shows the timing in the case that the data are fetched at the CAMCKI falling edge (CKPOL = 1 setting) and the polarity of
HSYNC is low active (HSPOL = 0 setting).
(*2)
Set CAMHSI so as not to become 'L' in other sections than the sync section (CAMHSI = 'L' section in the figure shown above).
(*3)
Do not change the frequency of CAMCKI during the operation.
(*4)
Take note of the items described above to input each signal.
8.2.2. Vertical direction synchronization timing
Fig.8 Vertical direction synchronization timing
(Note)
* Y_SIZE, AIE_YST and AIE_YSIZE, which are described in the figures and the notes, are set by the registers.
(*1)
The figure above shows the timing in the case that the polarity of VSYNC is low active (VSPOL = 0 setting) and also the polarity of
HSYNC is low active (HSPOL = 0 setting).
(*2)
Take note of the items described above to input each signal.


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