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User’s Manual for Advantech SOM-A2552 series module V1.00

 

 

 

address.

 

 

 

 

 

 

 

 

PCMCIA

write

enable.

Performs

 

 

 

 

writes to PCMCIA memory and to

 

B40

nBUF_PWE

O

PCMCIA attribute space. Also used

No pulling

 

 

 

as the write enable signal for

 

 

 

 

Variable Latency I/O.

 

 

 

 

 

 

GPIO

pin.

Advantech

default

 

 

 

 

function is used as matrix Keypad

 

 

 

 

IRQ. The pin directly connects to

 

A40

KEYPAD_IRQ

I

PXA255 GPIO2 (L13 pin). If user

No pulling

 

 

 

doesn’t use the matrix key pad

 

 

 

 

function, use can use this pin as

 

 

 

 

GPIO pin.

 

 

 

 

B41

N.C.

-

N.C. just float this pin.

 

 

-

 

 

 

 

 

 

 

 

No pulling

 

 

 

GPIO pin. The pin directly connects

(For

 

 

 

SOM-255F

A41

PXA_GP7

IO

to PXA255 GPIO7 (G15 pin). This

 

 

 

GPIO pin is available for user to use.

is

 

 

 

PXA_GPIO

 

 

 

 

 

 

 

 

7)

 

 

 

Advantech use this pin to control

 

 

 

 

companion chip as IRQ function.

 

 

 

 

The pin is not available for CSB

 

B42

EVA_IRQ

-

design

of

SOM-A2558

&

-

SOM-A255F platform. SOM-A2558

 

 

 

 

 

 

 

& SOM-A255F user must float this

 

 

 

 

pin. This pin is directly connected to

 

 

 

 

SoC PXA255 GPIO9(F12).

 

 

 

 

 

 

Advantech default function is used

 

 

 

 

as external 16C950 solution IC IRQ.

 

 

C950_485_IR

 

The pin directly connects to PXA255

 

A42

I

GPIO10 (F7 pin). If user doesn’t

No pulling

Q

 

 

 

design 16C950 on CSB to expand

 

 

 

 

COM function, user could use this

 

 

 

 

pin as GPIO.

 

 

 

 

 

 

 

Advantech default function is used

 

 

 

 

as external LAN solution IC IRQ. The

 

 

 

 

pin directly connects to PXA255

 

B43

LAN1_IRQ

I

GPIO17 (D12 pin). If user doesn’t

No pulling

 

 

 

design the other LAN chip on CSB to

 

 

 

 

expand LAN function, user could use

 

 

 

 

this pin as GPIO.

 

 

 

 

 

 

Advantech default function is used

 

 

 

 

as external USB host solution IC

 

 

 

 

IRQ. The pin directly connects to

 

A43

USB_IRQ

I

PXA255 GPIO27 (B9 pin). If user

No pulling

 

 

 

doesn’t design the other USB

 

 

 

 

solution chip on CSB to expand USB

 

 

 

 

host function, user could use this pin

 

 

 

 

as GPIO.

 

 

 

 

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Advantech SOM-A2552 manual Keypadirq, PXAGP7, Evairq, LAN1IRQ, Usbirq