Publication No. 500-657055-000 Rev. G
Standard Features 35
2.3 PCI Device Interrupt Map
The PCI bus-based external devices include the PCI-to-PCI bus bridge, PMC site
and the IDE controller. These external devices are mapped to the PCI Interrupt
Request (PIRQx) lines of the MV64460. This mapping is defined in Table 2-1.
2.4 Integrated Peripherals
The VMICPCI-7055/CPCI-7055RC incorporate the Quad UART controller.
The Quad UART controller provides the VMICPCI-7055/CPCI-7055RC with
four 16554 UART-compatible serial ports. The Marvell MV64460 provides three
independent Ethernet ports. One serial port and one Gigabit Ethernet port are
available via the front panel, using an RJ45 connector for the serial port and an
RJ45 connector for the Gigabit Ethernet connection. COM1 and COM2 are routed
to the CompactPCI J3 connector.
The parallel IDE interface is provided by the PCI6150 PCI-to-PCI Bridge. The IDE
interface supports two channels: primary and secondary. The primary channel is
routed to an optional onboard CompactFlash socket. The secondary channel is
routed out of the CompactPCI J5 backplane connector to an optional RTM that
terminates into a standard 40-pin header. This channel can support a master and
slave drive. The IDE interface on the VMICPCI-7055/CPCI-7055RC supports Ultra
ATA/33, Ultra ATA/66 and Ultra ATA/100 drives and automatically determines
the proper operating mode based on the type of drive used. In order to properly
function in the Ultra ATA/100 mode, a special 80 conductor cable must be used
instead of the standard 40 conductor cable. This cable is typically available from
the Ultra ATA/100 drive manufacturer.
Table 2-1 PCI Device Interrupt Mapping
PCI-X Devices
PGNT
PREQ
IDSEL
IRQ
Vendor
ID
Device
ID
MV64460 PCI1
N/A
N/A
Px_AD[21]
Px_IRQA#
N/A
N/A
PMC Site 1
Px_GNT[0]#
Px_REQ[0]#
Px_AD[17]
Px_IRQA#
N/A
N/A
PMC Site 2
Px_GNT[1]#
Px_REQ[1]#
Px_AD[18]
Px_IRQB#
N/A
N/A
PCI Devices
MV64460 PCI0
N/A
N/A
P_AD[21]
P_IRQA#
N/A
N/A
HINT HB6
P_GNT[0]#
P_REQ[0]#
P_AD[22]
P_IRQE#
10E3H
0513H
PCI-to-PCI Bridge
P_GNT[1]#
P_REQ[1]#
P_AD[20]
N/A
N/A
N/A
IDE Controller
P2_GNT[0]#
P2_REQ[0]#
P2_AD[23]
P2_IRQ[B]#
N/A
N/A
