MPC8533EVTANG Freescale Semiconductor, MPC8533EVTANG Datasheet - Page 451

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MPC8533EVTANG

Manufacturer Part Number
MPC8533EVTANG
Description
MPU POWERQUICC 783-PBGA
Manufacturer
Freescale Semiconductor
Datasheets

Specifications of MPC8533EVTANG

Processor Type
MPC85xx PowerQUICC III 32-Bit
Speed
800MHz
Voltage
1V
Mounting Type
Surface Mount
Package / Case
783-FCPBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-

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10.5.1.2
To change the vector, priority, polarity, sense or destination of an active (unmasked) interrupt source, the
following sequence should be performed:
Freescale Semiconductor
1. Mask the source using the mask (MSK) bit in the vector/priority register.
2. Wait for the activity (A) bit for that source to be cleared.
3. Make the desired changes.
4. Unmask the source.
MPC8533E PowerQUICC III Integrated Host Processor Family Reference Manual, Rev. 1
To avoid having to handle a false interrupt for this case, software can clear
the PIC interrupt pending register of these spurious edge detections by first
configuring the polarity/sense of external interrupt sources to be
level-sensitive; high-level if the input is a positive-edge source, low-level if
it’s a negative-edge source (while the mask bit remains set). After this is
complete, configuring the external interrupt source as edge-sensitive will
not cause a false interrupt.
Changing Interrupt Source Configuration
Programmable Interrupt Controller
10-55

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