參數(shù)資料
型號(hào)： OX12PCI840
廠商： Electronic Theatre Controls, Inc.
英文描述： Integrated Parallel Port and PCI interface
中文描述： 集成的并行端口和PCI接口
文件頁(yè)數(shù)： 8/32頁(yè)
文件大?。?/td> 541K
代理商： OX12PCI840
3 C
ONFIGURATION
& O
PERATION
Data Sheet Revision 1.2
Page 8
OX12PCI840
OXFORD SEMICONDUCTOR LTD.
The OX12PCI840 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.
The OX12PCI840 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 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
timings. These can be set up by drivers or from the
EEPROM.
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, allowing pre-
configuration, without requiring driver changes.
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