M
ODEL
SL900A V
ERSION
V_1.0
P
REPARED BY
H/W
D
ATE
2006.06.30
S
UBJECT
T
ECHNICAL
M
ANUAL
P
AGE
23/51
SL900A
T
ECHNICAL
M
ANUAL
-
4 Layers overlay with individual color depth, window size, vertical and horizontal offset, source key, alpha
value and
Display rotation control(90
o
,180
o
,270
o
, morror and mirror then 90
o
, 180
o
and 270
o
)
-
One Color Loop-up Tables.
For Parallel LCD modules, the LCD controller can reuse external memory interface or use dedicated 8/9/16/18
bit parallel interface to access them and 8080 type interface is supported. It can transfer the display data from
the internal SRAM or external SRAM/Flash Memory to the off-chip LCD modules.
Figure 16. LCD interface block diagram.
In SL900A
, The 65K color TFT LCD Module is used with Samsung Driver IC –
TL1769
.
The Resolution is
176x240
dots and 1.
79
inch Panel from Han Star.
6.2
JPEG Decoder
To boost JPGE image processing performance, a hardware block is preferred to aid software and deal with
jpeg file as much as possible. As a result, JPEG Decoder is designed to decode all baseline and progressive
JPEG images with all YUV sampling frequencies combinations. To gain the best speed performance, JPEG
decoder will handle all portions of JPEG files except the 17 byte SOF marker. The software program only needs
to program related control registers based on the SOF maker and wait for an interrupt coming from hardware.
Taking into consideration the limited size of memories, hardware also supports multiple runs of JPEG
progressive images and breakpoints insertion in huge JPGE files.
6.3
Image Resizer
This Block provides image resizing capability. It receives image data from a block-based image source such
as JPEG decoder in format of YUV color space, or a pixel-based image source such as camera in format of RGB
or YUV and performs image resizing. The first pass is coarse resizing pass and it can shrink the image by a
factor of 1, 1/4, 1/16, 1/64. The second pass is fine resizing pass and it can shrink and enlarge the image in
Summary of Contents for SL900A
Page 1: ...SL900A SL900A ...
