VSBC-6862
Rev 1.43
16
The VME interrupter I(1-7)
The interrupter is able to generate any VME IRQ level and send a user-defined vector.
The VME interrupt-handler IH(1-7)
This interrupt-handler is able to recognize all IRQ VME levels.
All levels can be masked with the VHM register.
When an IRQ is coming from the VME side, an IRQ1 is sent to the MPC-8260.
The user can then read the IRQ levels active in the VHIL register.
Depending of the IRQ level to be acknowledged, the user can read the vector in the corresponding
offset in the VHV register.
When reading the vector, the interrupt acknowledge cycle is initiated.
The VME system controller.
This function can be enabled or disabled with the Slot1 jumper.
When the system controller is enabled, the VSBC-6862 provides the following functions:
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VME arbiter: SGL, PRI, or RRS depending of the VAM register.
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VME bus monitor: BTO(30)
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IACK daisy-chain driver.
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16 MHz system clock generator.
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Содержание VSBC-6862
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