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User’s Manual for Advantech SOM-A2558 series module V1.00
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If user wants to connect CSB to LVDS type LCD, user could reference
“Advantech SOM-A255x series CSB design guide “to design LVDS
Transmitter on CSB. SOM-A255x series only support 1 channel LVDS LCD
panel.
The sample images of SOM-A2552, SOM-A255F series could support 4
kinds of display modes:
l 320x240 TFT: In SOM-A2552 & SOM-A255F module, user
CAN’T verify the performance by Advantech LCD kit
LCD-A057-STQ1-0. Because SOM-A2552 & SOM-A255F
supports 320x240 TFT mode, but LCD-A057-STQ1-0 is 320x240
STN panel.
l 640x480 TFT: user could verify the performance by Advantech
LCD kit LCD-A064-TTV1-0.
l 800x600 TFT: user could verify the performance by Advantech
LCD kit LCD-A104-TTS1-0.
l 1024x768 TFT: user could verify the performance by Advantech
LCD kit LCD-A150-TTX2-0.
Except 320x240 TFT mode, user could verify the LCD-out function by
Advantech LCD kit. Advantech LCD kit LCD-A057-STQ1-0 is 320x240 STN
type LCD, not TFT type, so user couldn’t verify the 320x240 TFT function by
sample images.
The sample images of SOM-A2558 series could support 4 kinds of display
modes:
l 320x240 STN: User can use Advantech LCD kit
LCD-A057-STQ1-0 to evaluate the LCD-out performance of
SOM-A2558 platform.
l 640x480 TFT: User can use Advantech LCD kit
LCD-A064-TTV1-0 to evaluate the LCD-out performance of
SOM-A2558 platform.
2.2.11 Zoom Video (ZV) port
SOM-A255F & SOM-A2552 series ZV port comes from SM501.
SOM-A2558 series don’t support the function. ZV Port can interface with video
decoders, such as NTSC/PAL decoders, MPEG-2 decoders, and JPEG Codec.
The ZV Port supports resolutions up to 1280x1024. It directly accepts digitized
RGB or YUV signals, and does not accept analog signals.
In 16-bit mode, the ZV [15:8] signals are the most-significant eight video
pixel inputs. In 8-bit mode, these signals are not used. In 16-bit mode, the ZV
[7:0] signals are the least-significant eight video pixel inputs. In 8-bit mode,
these signals are the only eight video pixel inputs.
About how to wire the ZV port with NTSC/PAL decoders, please check
“Advantech SOM-A255x series CSB design guide “.
2.2.12 System Reset Interface
SOM-A255x series all supply 3 kinds of System reset interface as
following:
Ø nRESET : hardware reset input pin. The pin is pulled high in
SOM-A255F. The pin is triggered by signal falling edge.