MPC8544COMEDEV Freescale Semiconductor, MPC8544COMEDEV Datasheet - Page 445

• Manufacturer Part Number: MPC8544COMEDEV
• Description: KIT DEV EXPRESS MPC8544COM
• Manufacturer: Freescale Semiconductor
• Type: MPUr

Specifications of MPC8544COMEDEV

• Contents: Board
• For Use With/related Products: MPC8544
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10.3.8.3
The processor who am I register (WHOAMI), shown in
determine its physical connection to the PIC. The value returned when reading this register may be used
to determine the value for the destination masks used for dispatching interrupts.
Table 10-49
10.3.8.4
In systems based on processors that implement the Power Architecture technology, the interrupt
acknowledge function occurs as an explicit read operation to a memory-mapped interrupt acknowledge
register (IACK), shown in
vector corresponding to the highest priority pending interrupt. Reading IACK also has the following side
effects:
Reading this register when there is no pending interrupt returns the spurious vector value as described in
Section 10.3.1.8, “Spurious Vector Register (SVR).”
Freescale Semiconductor
27–31
0–26
Offset 0x6_0090
Offset 0x6_00A0
Reset
Bits
Reset
•
•
•
W
W
R
R
The associated field in the interrupt pending register is cleared for edge-sensitive interrupts.
The in-service register (ISR) is updated.
The interrupt signal (int) to the processor is negated.
0
0
Name
—
ID
describes the WHOAMI fields.
MPC8544E PowerQUICC III Integrated Host Processor Family Reference Manual, Rev. 1
Who Am I Register (WHOAMI)
Processor Interrupt Acknowledge Register (IACK)
Reserved
Returns the ID of the processor reading this register. Always returns zero.
Figure 10-46. Processor Interrupt Acknowledge Register (IACK)
Figure 10-45. Processor Who Am I Register (WHOAMI)
Figure
—
Table 10-49. WHOAMI Field Descriptions
10-46. Reading the interrupt acknowledge register returns the interrupt
—
All zeros
All zeros
15 16
Description
Figure
10-45, can be read by the processor to
VECTOR
Programmable Interrupt Controller
26 27
Access: Read Only
Access: Read only
ID
10-47
31
31