Advantech RISC SOM-A2558 - Manual (Page 35)

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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