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User’s Manual for Advantech SOM-A2552 series module V1.00
10
CPLD
SOM-A2552 series have one CPLD on board. The CPLD take charges of
the following function:
l System memory assignments
l I/O control
l RTC control
Base on Advantech policy, Advantech won’t release the CPLD code to
user. In fact, when user designs their own target carrier board, they don’t need
to know the CPLD code. Advantech will release memory map of available
memory block and available GPIOs. These are fully enough to users to
develop their own carrier board.
1.2 System Specifications
The following table is SOM-A2552 series functional specifications.
SOM-A2552 standard product specification table
Model Name
Func.
SOM-A2552-440B0 Reconfiguration Option
CPU PXA255-400MHz 200/300/400 MHz
Graphic Chip
SMI SM501 with 8MB embedded
SDRAM
SM501 with /without 8MB
embedded SDRAM
System Memory(SDRAM)
64MB 16/32/64/128 MB
Booting Flash 1MB NOR Flash -
On-board Flash (Image &
Storage )
0MB 0/16/32/64MB
OS Image Storage WinCE.NET Linux(By customer request)
AMI Bus(X1 Bus)
100-pin B2B connector with driving
buffers
Yes
Feature Extension
Bus(X2 Bus)
100-pin B2B connector (Provide ZV
& SD/MMC I/F)
Yes
Watch Dog PXA255 internal -
RTC External RTC w/backup power pin
Yes
System Backup battery
RTC/SDRAM -
Serial Port
3x Full RS-232 (TTL), 1x 2-wires
RS-232 (TTL),1x 3-wires
RS-232/RS-485
-
PCMCIA/Compact flash
I/F
2 slots PCMCIA/CF or
1xPCMCIA, 1xCF
-
USB Host 1x USB 1.1 Host -
USB Client 1x USB Client -
SD/MMC
Ix Ch(Support
Memory mode)
-
CRT-out Up to 1280*1024 -
TV Interface TV out
ZV port Yes -
LCD TTL Interface
SM501 24 bit LCD interface,
resolution up to 1280*1024
-
Touch Screen Interface 4-wire resistive Yes