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Chapter 7 – XVME-978/2 PCI Ethernet/SCSI
Controller Module
A high-performance 32-bit PCI bus mastering Ethernet/SCSI controller may be added to
the XVME-655. The XVME-978/2 Ethernet/SCSI Controller provides a NE2100 and
NE1500 software-compatible Ethernet interface with support for both 10 and 100 Base-T
connections. It also features a fast and wide (16-bit, 20 Mbyte/second) SCSI interface.
The XVME-978/2 is designed to mate with the two interboard connectors on the XVME-
655. It also provides a second set of connectors to allow the installation of an XVME-
976, which offers PMC and PC/104 sites.
Architectural Block Diagram
Figure Chapter 7 -1 illustrates the block diagram for the XVME-978/2.
Mother board ISA connector
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Mother board PCI connector
PCI Bus
PCI Ethernet
AMD79C971
ICS-1890Y
PHY Layer
10/100 Base-T
ISA Bus
ISA Interboard Connector 1
Figure Chapter 7 -1. XVME-978/2 Block Diagram
PCI SCSI
ADAPTEC
AIC-7880
SCSI BUS
Front Panel
68-Pin
Connector
PCI Interboard Connector 2
7-1
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