Motorola MVME2400 Series Manuel de service télécharger pdf (Page 55)

Block Diagram

http://www.mcg.mot.com/literature 3-7

Hawk System Memory Controller (SMC)/PCI Host Bridge

(PHB) ASIC

The Hawk ASIC provides the bridge function between the MPC60x bus

and the PCI Local Bus. It provides 32-bit addressing and 64-bit data. The

64-bit addressing (dual address cycle) is not supported. The Hawk

supports various PowerPC processor external bus frequencies up to

100MHz.

There are four programmable map decoders for each direction to provide

flexible address mappings between the MPC and the PCI Local Bus. Refer

to the MVME2400 Programmer’s Reference Guide for additional

information.

The Hawk ASIC also provides an MPIC Interrupt Controller to handle

various interrupt sources. The interrupt sources are: Four MPIC Timer

Interrupts, the interrupts from all PCI devices, the two software interrupts,

and the ISA interrupts. The ISA interrupts actually are handled as a single

8259 interrupt at INT0.

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Motorola MVME2400 Series Manuel de service Page 55