PCIe-24DSI32
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General Standards Corporation Ph:(256)880-8787 FAX:(256)880-8788 Email: [email protected]
3-18
Detection of an interrupt condition or event is
edge-sensitive
. An interrupt request is generated
if, and only if, a specific interrupt condition undergoes a
transition
from 'false' (not-true) to 'true'
while that condition is selected.
Table 3.8.1. Interrupt Event Selection
INTERRUPT A[2:0]
INTERRUPT EVENT CONDITION
0
Initialization completed. Default state.
1
Autocal completed
2
Channels Ready
3
Data Buffer threshold flag, LOW-to-HIGH transition
4
Data Buffer threshold flag, HIGH-to-LOW transition
5
(Reserved)
6
(Reserved)
7
(Reserved)
3.8.2 Enabling the PCIe Interrupt
A local interrupt request will not produce an interrupt on the PCIe bus unless the PCIe interrupt
is enabled. The PCIe interrupt is enabled by setting the
PCI Interrupt Enable
and
PCI Local
Interrupt Enable
control bits HIGH in the runtime
Interrupt Control/Status Register
described in
the PLX
TM
reference manual.
