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User’s Manual for Advantech SOM-A2558 series module V1.00
35
enable signal
B24
PCIAD16
IO PCI address/data 16
No pulling
A24
PCIAD17
IO PCI address/data 17
No pulling
B25
PCIAD18
IO PCI address/data 18
No pulling
A25
PCIAD19
IO PCI address/data 19
No pulling
B26
PCIAD20
IO PCI address/data 20
No pulling
A26
PCIAD21
IO PCI address/data 21
No pulling
B27
PCIAD22
IO PCI address/data 22
No pulling
A27
PCIAD23
IO PCI address/data 23
No pulling
B28
PCIAD24
IO PCI address/data 24
No pulling
A28
PCIAD25
IO PCI address/data 25
No pulling
B29
PCIAD26
IO PCI address/data 26
No pulling
A29
PCIAD27
IO PCI address/data 27
No pulling
B30
PCIAD28
IO PCI address/data 28
No pulling
A30
PCIAD29
IO PCI address/data 29
No pulling
B31
N.C.
- N.C. float this pin.
-
A31
N.C.
- N.C. float this pin.
-
B32
N.C.
- N.C. float this pin.
-
A32
N.C.
- N.C. float this pin.
-
B33
N.C.
- N.C. float this pin.
-
A33
N.C.
- N.C. float this pin.
-
B34
N.C.
- N.C. float this pin.
-
A34
N.C.
- N.C. float this pin.
-
B35
nMMCD
I
SD/MMC interface card detect pin.
If user doesn’t need MMC/SD
function, user could use this pin as
GPIO. The pin connects to SoC
PXA255 GPIO12.
Pull high with
100Kohm
A35
MMCLK
O
MMC clock. Clock signal for the
MMC Controller. If user doesn’t
need MMC/SD function, user could
use this pin as GPIO. The pin
connects to SoC PXA255 GPIO6.
No pulling
B36
MMDAT3/
MMCCS0
O
Chip select pin for MMC controller.
If user doesn’t need MMC/SD
function, user could use this pin as
GPIO. The pin connects to SoC
PXA255 GPIO8.
No pulling (For
SOM-255F is
MMCCS0)
A36
MMCMD
IO
Multimedia Card Command.
Pull high with
10Kohm
B37
MMDAT0
IO
Multimedia Card Data pin.
Pull high with
10Kohm (For
SOM-255F is
MMCDAT)
A37
N.C.
-
No connection. Just float this pin.
N.C. (For
SOM-255F is
Reserved)
B38
N.C.
-
No connection. Just float this pin.
N.C. (For
SOM-255F is
