Cirrus-logic CS4234 Manual do Utilizador Página 49

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DS899F1 49
CS4234
USER: Mask bit(s)
set to 0
Unmasked error
occurs
Status Register bit
changes to ‘1’ and
INT pin set to
active level
USER: Read
Status Registers
(see status bit(s) =
‘1’)
Mask bit(s) of
corresponding
status bit(s) set to
‘1
Are any
errors still
occurring?
Yes
No
Status Register
bit(s) set to 1
USER: Read
Status Registers
(see all status bits
= ‘0’)
All Status Register
bits cleared
INT pin set to
inactive level
USER: Takes
Corrective Action
New Unmasked Error
New Unmasked Error
New Unmasked Error
New Unmasked Error
New Unmasked Error
New Unmasked Error
Figure 31. Interrupt Behavior and Example Interrupt Service Routine
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