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User’s Manual for Advantech SOM-A2558 series module V1.00
31
function, use can use this pin as
GPIO pin.
B41
DISPLAY_IR
Q
-
Advantech use this pin to control
display chip as IRQ f
unction. The pin
is not available for CSB design of
SOM-A2552 & SOM-
A255F
platform. SOM-
A2552 &
SOM-
A255F user must float this pin.
This pin is directly connected to SoC
PXA255 GPIO3(K14).
-
A41
PXA_GP7 IO
GPIO pin. The pin directly connects
to PXA255 GP
IO7 (G15 pin). This
GPIO pin is available for user to use.
No pulling
(For
SOM-
255F
is
PXA_GPIO
7)
B42
N.C. - N.C. just float this pin. -
A42
C950_485_IR
Q
I
Advantech default function is used
as external 16C950 solution IC IRQ.
The pin directly connects t
o PXA255
GPIO10 (F7 pin). If user doesn’t
design 16C950 on CSB to expand
COM function, user could use this
pin as GPIO.
No pulling
B43
LAN1_IRQ I
Advantech default function is used
as external LAN solution IC IRQ. The
pin directly connects to PXA255
GPIO1
7 (D12 pin). If user doesn’t
design the other LAN chip on CSB to
expand LAN function, user could use
this pin as GPIO.
No pulling
A43
USB_IRQ I
Advantech default function is used
as external USB host solution IC
IRQ. The pin directly connects to
PXA255 GP
IO27 (B9 pin). If user
doesn’t design the other USB
solution chip on CSB to expand USB
host function, user could use this pin
as GPIO.
No pulling
B44
C954_IRQ I
Advantech default function is used
as external 16C954 solution IC IRQ.
The pin directly connec
ts to PXA255
GPIO32 (A16 pin). If user doesn’t
design 16C950 on CSB to expand
COM function, user could use this
pin as GPIO.
No pulling
A44
PXA_GP81 IO
GPIO pin. The pin directly connects
to PXA255 GPIO81 (F16 pin). This
GPIO pin is available for user to use.
No pulling
B45
PXA_GP82 IO
GPIO pin. The pin directly connects
No pulling