Advantech PCI-1751U, User Manual

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PCI-1751U User Manual 22
3.4.4 Interrupt Source Control
The "mode bits" in the interrupt control register determine the allowable
sources of signals generating an interrupt. Bit 0 and bit 1 determine the
interrupt source for port 0, and bit 4 and bit 5 determine the interrupt
source for port 1, as indicated in Figure 3-3. Table 3-3 shows the rela-
tionship between an interrupt source and the values in the mode bits.
Figure 3.3: Figure 3-3: Interrupt sources
Table 3.3: Interrupt mode bit values
Port 1 Port 0
M11 M10 Description M01 M00 Description
0 0 Disable interrupt 0 0 Disable interrupt
0 1 Source = PC10 0 1 Source = PC00
1 0
Source = PC10 &
PC14
1 0
Source = PC00 &
PC04
1 1
Source = Counter
2
1 1 Source = Timer