Pci Host Bridge (Phb); Interrupt Controller (Mpic) - Motorola MVME2400 Series Installation And Use Manual

VME Processor Module Programmer's Reference Guide and to the
M48T559 data sheet for detailed programming and battery life
information.

PCI Host Bridge (PHB)

The PHB portion of 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 and PCI frequencies up to 33 MHz.
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 Series VME Processor Module Programmer's
Reference Guide for additional information and programming details.

Interrupt Controller (MPIC)

The MPIC Interrupt Controller portion of the Hawk ASIC is designed to
handle various interrupt sources. The interrupt sources are:
http://www.motorola.com/computer/literature
Four MPIC timer interrupts
Processor 0 self interrupt
Memory Error interrupt from the SMC
Interrupts from all PCI devices
Two software interrupts
ISA interrupts (actually handles as a single 8259 interrupt at INT0)
Block Diagram
3
3-25