Copyright © Siemens AG 2016. All rights reserved
77
ERTEC 200P-2 Manual
Technical data subject to change
Version 1.0
Global lock of all IRQ interrupt inputs
'0' = Enable all unmasked IRQ interrupt inputs
(use the set mask bits)
'1' = Global lock of all IRQ interrupt inputs
(independent of the interrupt mask)
Register:
EOI
Address:
4014h
Bits:
0
Reset value:
0h
Attributes:
t
Description:
End of interrupt (IRQ)
Informs the IRQ interrupt controller about the completion of the interrupt
service routine associated with the current request
Register:
UNLOCK_RD_ONLY_ACK
Address:
4018h
Bits:
0
Reset value:
0h
Attributes:
r
w
Description:
Unlocks the read only acknowledge mechanism. By setting this bit to 1 one
can reach an acknowledge via a write access to ACK
0: Read only mechanism is active to acknowledge an Interrupt Request
1: Also a write access to ACK acknowledges the Interrupt Request. Be
aware that this write access is destructive – the data is never be accessible
any more.
Register:
MASK_ALL_INPUT_EN
Address:
401Ch
Bits:
0
Reset value:
0h
Attributes:
r
w
Description:
Enable the masking of all interrupt inputs using e.g. a DBGACK signal from
the CPU.
There is an input to the generic ICU to mask all interrupts. This input is
called "mask_all".
0: Function disabled, "mask_all" is not used
1: Function enabled, all IRQ inputs are masked when "mask_all" =1
Register:
LOCKREG
Address:
4020h
Bits:
31dt0
Reset value:
00000000h
Attributes:
r
w
Description:
Priority Lock Register
Specification of a priority to lock interrupt requests with lower or equal
priority
Bit Identifier
Reset Attr.
Function / Description
6dt0 LOCK_PRIO
00h r
w
Binary code of the locking priority
31 LOCKREG_ENABLE 0h r
w
0 = lock inactive / 1 = lock active
Содержание ERTEC 200P
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