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MVME2500 Installation and Use (6806800L01H)
117
7.3 Interrupt Controller
The MVME2500 uses the MPC8548E integrated programmable interrupt controller (PIC) to
manage locally generated interrupts. Currently defined external interrupting devices and
interrupt assignments, along with corresponding edge/levels and polarities, are shown in the
following table.
Table 7-2 MVME2500 Interrupt List
Interrupt Line
Interrupt Usage
(Schematic) Interface to CPU Description
IRQ0 None Reserved for VME interrupt
IRQ1 QUART_IRQ1 LBC RTB Quart Interrupt
IRQ2 QUART_IRQ2 LBC RTB Quart Interrupt
IRQ3 QUART_IRQ3 LBC RTB Quart Interrupt
IRQ4 Temperature
Interrupt
I2C Two onboard Thermal Sensors:
one is for CPU temp and the
other is for board temp
IRQ5 Ethernet 1 Management I2C Ethernet interrupt is handled by
PHY/ Connected for flexibility
IRQ6 Ethernet 3 Management I2C Ethernet interrupt is handled by
PHY/ Connected for flexibility
IRQ7/ GPIO0 Ethernet 2 Management I2C Ethernet interrupt is handled by
PHY/ Connected for flexibility
IRQ8/ GPIO1 RTC (Real Time
Clock)
12C
IRQ9/ GPIO2 FPGA Interrupt LBC NMI and 3 Tick Timer Interrupts
IRQ10// GPIO3 FPGA Interrupt LBC Power Interruption
IRQ11// GPIO4 QUART_IRQ0 LBC RTB Quart Interrupt