參數(shù)資料
型號(hào): OXCB950
廠商: Electronic Theatre Controls, Inc.
英文描述: Integrated High Performance UART Cardbus / PCI interface
中文描述: 綜合高性能的UART Cardbus / PCI接口
文件頁(yè)數(shù): 11/68頁(yè)
文件大?。?/td> 409K
代理商: OXCB950
5 C
ONFIGURATION
& O
PERATION
Data Sheet Revision 1.1
Page 11
OXCB950
OXFORD SEMICONDUCTOR LTD.
The OXCB950 is configured by systemstart-up software
during the bootstrap process that follows bus reset.
By default, the device powers-up in the cardbus mode and
for this application mode, the systemexamnes the
Cardbus CIS pointer
value contained in the predefined PCI
Header region (at Dword 0Ahex) to locate the start of the
Cardbus Information Structure (CIS). It then traverses the
tuple information contained in this CIS area
NOTE1
to identify
the device type and the necessary resources requested by
the device.
For the PCI application mode, whereby the device’s default
cardbus mode is overridden into the PCI mode though the
use of the optional EEPROM(this takes place prior to any
configuration accesses), the systemscans the PCI bus and
reads the vendor and device identification codes fromany
devices it finds and the resources being requested.
For both cardbus and PCI applications, the systemthen
loads the device-driver software according to this
information and configures the I/O, memory and interrupt
resources. Device drivers can then access the functions at
NOTE1
Windows Support for Cardbus applications, treats the information contained in the CIS area as “supplemental” information
for devices that are not fully described using the PCI configuration Space. This means that it is possible that provided the PCI
header space implements the mnimumfields as recommended by Mcrosoft (the cardbus “Allocated” and “Reserved” fields are
defined) then Windows will not utilise the information contained in the CIS.
the assigned addresses in the usual fashion, with the
improved data throughput provided by cardbus/PCI buses.
A set of
local configuration registers
have been provided
that can be used to control the device’s characteristics
(such as interrupt handling) and report internal functional
status. This is on top of the UART registers and the
registers contained in both the PCI configuration Space
and the Cardbus Information Structure (CIS). These local
registers can be set up by device drivers or fromthe
optional EEPROM
The EEPROMcan also be used to redefine the reset
values of most register areas to tailor the device to the end
users requirements if the default values do not meet the
specific requirements of the manufacturer, such as the
identification registers. As an additional enhancement, the
EEPROMcan be used to pre-programthe UART, allowing
pre-configuration, without requiring device driver changes.
This allows the enhanced features of the integrated UART
to be in place prior to handover to any generic device
drivers.
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參數(shù)描述
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OXCB950-TQC60-A 制造商:OXFORD 制造商全稱:OXFORD 功能描述:Integrated High Performance UART Cardbus / 3.3v PCI interface
OXCF950 制造商:OXFORD 制造商全稱:OXFORD 功能描述:low cost asynchronous 16-bit PC card or Compact Flash UART device
OXCF950_06 制造商:OXFORD 制造商全稱:OXFORD 功能描述:low cost asynchronous 16-bit PC card or Compact Flash UART device
OXCF950B 制造商:PLX 制造商全稱:PLX 功能描述:16-bit PC card/CF+ bridge to serial port