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In
addition to JPEG encoder, hardware JPEG decoder was also
incorporated into SSD1921 and SSD1922. Besides JPEG
photo decoding onto display, motion JPEG with fast frame
rate (QVGA 24bit color at 30fps) can be easily realized
with most common 16bit MCUs. Advanced 2D graphics engine
with alpha blending, drawing functions, PIP displays,
GUI of different effect can be built.
SSD1921
and SSD1922 have SD/SDIO host controller built-in.
Connectivity to SD memory card for external storage, or
expansion to SDIO type of devices will be much easier
than before.
Interface
to host MCU can use 6800 or 8080 typed direct addressing
mode for fast 8bit or 16bit access. For MCUs with
limited I/O pins, indirect addressing mode helped a lot
with no need to connect the address buses.
For
SSD1921, common single display panels without RAM type
can be supported. The maximum color depth support of
panel can be as high as 18bit in parallel RGB TFT or
24bit in serial RGB TFT. SSD1921 package is LQFP-144
which can be used in any consumer electronic devices and
automotive display controllers.
Whereas,
for SSD1922, the package is BGA-144 with both main panel
and sub-panel support. The small package of SSD1922
makes it suitable for any kind of portable devices and
even mobile phone use. The main and sub-panels can be
either with RAM or without RAM typed. Maximum color
depth of parallel 24bit TFT panel without RAM can be
supported.
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