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8-10. Setting Interrupts
Interrupt signals that can be output to the IWTA# signal on the PCI bus are IWT2 to IWT0.
Each interrupt signal is output to IWTA# when an interrupt is caused.
In addition, the command reservation function (applied function) uses the IWT3 signal to interlock
command execution when a cause of clearing the reservation command register is generated.
These interrupt signals can individually be masked or clear the interrupt output.
* For the execution sequence for making settings for cleaning the reservation command, refer to the
separate manual "Technical Data A."
IWT3 to IWT0 signals
■
・ Twelve interrupt requests are output to the IWT2 to IWT0 signals by logically adding (CW) all
signals in each IWT to output them.
Interrupt requests are output to IWTA# upon detection of an active edge of an interrupt cause.
・ For IWT3, an EWWCW flag is assigned to WPIC0 and FSEWD flag to WPIC1 by the HAWD IWITIALIZE2 command.
When a cause of clearing the reservation command is generated, the IWT3 signal clears the
reservation command.
・ Fourteen interrupt request outputs are individually cleared by the IWT FACTCW CLW command.
They can
also be individually masked by the IWT FACTCW MASK command.
*
For the command reservation function, refer to the separate manual "Technical Data A."
Interrupt request output
Interrupt cause <edge detection>
Clearance method
Command end interrupt request WDYIWT = 1
WDYIWT
・
STATCS1 PCWT STBY = 1
Clear by IWT FACTCW
STBY
・
・
IWT0
STATCS5 PCWT CCMWEW EP = 1
CLW command
COMREG EP
・
STATCS5 PCWT CCMWEW FL = 0
nCOMREG FL
・
STATCS1 PCWT MAW = 1
MAW
・
STATCS2 PCWT DALM = 1
Clear by IWT FACTCW
DALM
・
・
IWT1
STATCS5 PCWT SS0 = 1
CLW command
SS0
・
STATCS5 PCWT SS1 = 1
SS1
・
Counter interrupt request ADWIWT = 1
ADWIWT
・
Counter interrupt request CWTIWT = 1
Clear by IWT FACTCW
CWTIWT
・
・
IWT2
Counter interrupt request DFLIWT = 1
CLW command
DFLIWT
・
Counter interrupt request SPDIWT = 1
SPDIWT
・
STATCS3 PCWT WPIC0 (EWWCW) = 1
GPIO0(ERROR)
・
STATCS3 PCWT WPIC1 (FSEWD) = 1
Clear by IWT FACTCW
GPIO1(FSEND)
・
・
INT3
Weserved
CLW command
-
Weserved
-
The output status of IWT3-0 can be checked at STATCS3 PCWT.Interrupt request outputs can be cleared
even when the interrupt cause is in the active level.
After clearing, an interrupt request is output
if the active level changes from CW to CFF and then to CW.
Interrupt causes and IWTA# output configuration
■
STATCS3
Interrupt
Interrupt
Individual
request
request
Detection of interrupt cause
output
output
IWTA# output
IWT CW
(IWT2--0)
<Clear>
<Mask>
output
IWT3
Csed for internal FSSTCP
Four
Latch
clearing the reservation
IWT FACTCW
<
>
(
causes
MASK
)
command
in total
IWT FACTCW
<
>
Trigger
CLW
(
)
Counter
Cutput of SIWWAL
Counter
CCTA and CCTB
Counter CCMP output
IWT
STATCS4 output
TYPE