Advantech PCI-1757UP Manual de usuario descargar pdf (Pagina 24)

PCI-1757UP User Manual 18

3.2.4 Initial Configuration

The initial configuration of each port depends on the software or switch

SW2 setting of each port as input or output port, and on the setting of the

jumper JP1 for the hot reset type.

3.3 Interrupt Function

3.3.1 Interrupt Function of the D I/O Signals

Two I/O pins (PC0 and PC1) can be used to generate hardware interrupts.

The interrupt control register can be programmed (Base + 32) to select

the interrupt sources.

The "Interrupt Control Register" (Base + 32) controls the interrupt signal

source, edge and flag. Table 3-2 shows the bit map of the interrupt control

When writing to it, it is used as a control register, and when reading from

it, it is used as a status register.

M0 and M1: "mode bits" of port 0

E: triggering edge control bits

F: flag bits

X: ignore

Table 3.2: Interrupt Control Register Bit Map

Bit# D7 D6 D5 D4 D3 D2 D1 D0

XXXXFEM1M0

1 2 ... 19 20 21 22 23 24 25 26 27 28

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Advantech PCI-1757UP Manual de usuario Pagina 24