OX9162
OXFORD SEMICONDUCTOR LTD.
CONFIGURATION & OPERATION
3
The OX9162 is a single function, target-only PCI device,
compliant with the PCI Local Bus Specification, Revision
2.2 and PCI Power Management Specification, Revision
1.0.
addresses in the usual fashion, with the improved data
throughput provided by PCI.
There are a set of Local configuration registers that can be
used to enable signals and interrupts, and configure local
bus timings. These can be set up by drivers or from the
EEPROM.
The function selected is configured by the Mode pin. It
should be tied low for parallel port operation, or tied high
for local bus operation.
All registers default after reset to suitable values for typical
applications. However, all identification, control and timing
registers can be redefined using an optional serial
EEPROM. As an additional enhancement, the EEPROM
can be used to program the parallel port or local bus,
allowing pre-configuration, without requiring driver
changes.
The OX9162 is configured by system start-up software
during the bootstrap process that follows bus reset. The
system scans the bus and reads the vendor and device
identification codes from any devices it finds. It then loads
device-driver software according to this information and
configures the I/O, memory and interrupt resources. Device
drivers can then access the functions at the assigned
Data Sheet Revision 1.1 PRELIMINARY
Page 8
OXFORD [ OXFORD SEMICONDUCTOR ]
