PEB20256EV21GXP Infineon Technologies, PEB20256EV21GXP Datasheet - Page 81
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PEB20256EV21GXP
Manufacturer Part Number
PEB20256EV21GXP
Description
Manufacturer
Infineon Technologies
Datasheet
1.PEB20256EV21GXP.pdf
(232 pages)
Specifications of PEB20256EV21GXP
Operating Supply Voltage (typ)
2.5/3.3V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / Rohs Status
Compliant
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•
Figure 4-13
As soon as the interrupt controller has written an interrupt vector to one of the nine
interrupt queues the PCI interrupt pin INTA is asserted. The global interrupt status
register indicates in which interrupt queue the interrupt vector can be found. Each of the
Data Sheet
FFFFFFFF
00000000
IQBA
H
H
Interrupt status:
GISTA, GMASK
Interrupt queue setup:
IQIA, IQBA, IQL, IQMASK
System memory
Interrupt queue
interrupts
Int. vector setup:
CONF1, CONF2
Layer Two Interrupts (Channel, command, port and system
interrupts
System
1
interface
2
PCI
IV
controller
Int. vector setup:
CSPEC_IVMASK,
CSPEC_BUFFER
Interrupt
Command
interrupts
Channel,
5
81
1. Interrupt source forwards interrupt vector to
2. Interrupt controller moves interrupt vector to
3. Interrupt controller asserts INTA (if enabled).
4. Microprocessor reads status register GISTA.
5. Microprocessor reads interrupt queue.
interrupt controller.
interrupt queue.
Interrupt bus
3
1
INTA
256
Microprocessor
Int. vector setup:
PMR, CONF2
4
interrupts
Functional Description
Port
from layer one
interrupt FIFO
PCI bus
PEB 20256 E
PEF 20256 E
04.2001
LINT
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