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PCI9060ES Arkusz danych(PDF) 34 Page - List of Unclassifed Manufacturers

Numer części PCI9060ES
Szczegółowy opis  12O COMPATIBLE PCI BUS MASTER INTERFACE CHIP FOR ADAPTERS AND EMBEDDED SYSTEMS
PDF  192 Pages
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Producent  ETC [List of Unclassifed Manufacturers]
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PCI9060ES Arkusz danych(HTML) 34 Page - List of Unclassifed Manufacturers

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SECTION 3
PCI 9080
FUNCTIONAL DESCRIPTION
©PLX Technology, Inc., 1997
Page 25
Version 1.02
3.6.2.2.2 Local Bus Initialization Software
Range—Specifies which PCI address bits to use for
decoding a PCI access to local bus space. Each of the
bits
corresponds
to
a
PCI
address
bit.
Bit
31
corresponds to Address bit 31. Write a value of 1 to all
bits that must be included in decode and a 0 to all
others.
Remap PCI to Local Addresses into a Local Address
Space—Bits in this register remap (replace) the PCI
address bits used in decode as the Local Address bits.
Local Bus Region Descriptor—Specifies the local bus
characteristics.
3.6.2.2.3 PCI Initialization Software
PCI reset software determines how much address space
is required by writing a value of all ones (1) to a PCI
Base Address register and then reading back the value.
PCI 9080 return zeroes in “don’t care” address bits,
effectively specifying the address space required. The
PCI software then maps the Local Address space into
the PCI Address space by programming the PCI Base
Address register. (Refer to Figure 3-13.)
 


  

    
  
      && '  %
          
(   '       
      )*' 
         
 ( &&    && '  %
(   '       
 ( &&    )*' 

  
 
 
  
 
 
 

 

 

 

 

 
 

 

   



Figure 3-13. Direct Slave Access of Local Bus



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