Adlink PCI-7256 Manual de usuario Pagina 29

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Register Format
21
CH1 Int_EN (bit 10): Write/Read
DI channel 1 interrupt enable control
1 : enable
0 : disable
The following table shows all possible combinations of interrupt source.
Table 3.2 Interrupt source set up
Interurpt type
Bit
10
Bit
9
Bit
8
IRQ source IRQ trigger condition
Disable 0 0 0 Interrupt disable --
Mode 1 0 0 1 COS interrupt
Change of state in the enabled
channel
Mode 2 0 1 0 Ch.0 interrupt enable Rising edge of DI channel 0
Mode 2 1 0 0 Ch.1 interrupt enable Rising edge of DI channel 1
Mode 2 1 1 0
Ch.0 & 1 interrupt
enable
Rising edge of DI channel 0 or
1
0 1
1 0
Forbidden
1 1
1 Not allowed (disable) ---
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