Advantech PCI-1757UP Especificaciones descargar pdf (Pagina 25)

Chapter 3 Function Description 21

E Triggering edge of interrupt signal

1 Rising edge trigger

0 Falling edge trigger

Table 3-4: Triggering edge control bit values

Interrupt Flag Bit

The "interrupt flag" bit is a flag indicating the status of an interrupt. It is

a readable and writable bit. Read the bit value to find the status of the

interrupt, write "1" to this bit to clear the interrupt. This bit must be

cleared in the ISR to service the next incoming interrupt.

F Interrupt status

1 Interrupt occurred Read

0 No interrupt

1 Clear interrupt Write

0 Don't care

Table 3-5: Interrupt flag bit values

Board ID

Read Base +36 can get the board ID. The PCI-1757UP has a built-in

SMD switch (SW1), which is used to define each card’s board ID. You

can determine the board ID on the register as shown on Table 7. When

there are multiple cards on the same chassis, this board ID setting

function is useful for identifying each card’s device number through

board ID. We set the PCI-1757UP board ID as 0 at the factory. If you

need to adjust it to other board ID, set the SW1 by referring to the

jumper and SMD switch setting.

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Advantech PCI-1757UP Especificaciones Pagina 25