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AX88195P Folha de dados(PDF) 21 Page - ASIX Electronics Corporation

Nome de Peças AX88195P
Descrição Electrónicos  10/100BASE Local CPU Bus Fast Ethernet MAC Controller
PDF  37 Pages
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Fabricante Electrônico  ASIX [ASIX Electronics Corporation]
Página de início  http://www.asix.com.tw
Logo ASIX - ASIX Electronics Corporation

AX88195P Folha de dados(HTML) 21 Page - ASIX Electronics Corporation

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ASIX ELECTRONICS CORPORATION
21
AX88195 Local CPU Bus Fast Ethernet MAC Controller
5.0 CPU I/O Read and Write Functions
The AX88195 supports four kinds of CPU/BUS types access function, including ISA, 80186,
MC68000 and MCS-51. These Access methods are described as the following sections.
5.1 ISA bus type access functions.
ISA bus I/O Read function
Function Mode
/CS
/BHE
A0
/IORD
/IOWR
SD[15:8]
SD[7:0]
Standby Mode
H
X
X
X
X
High-Z
High-Z
Byte Access
L
L
H
H
L
H
L
L
H
H
Not Valid
Not Valid
Even-Byte
Odd-Byte
Word Access
L
L
L
L
H
Odd-Byte
Even-Byte
ISA bus I/O Write function
Function Mode
/CS
/BHE
A0
/IORD
/IOWR
SD[15:8]
SD[7:0]
Standby Mode
H
X
X
X
X
X
X
Byte Access
L
L
H
H
L
H
H
H
L
L
X
X
Even-Byte
Odd-Byte
Word Access
L
L
L
H
L
Odd-Byte
Even-Byte
5.2 80186 CPU bus type access functions.
80186 CPU bus I/O Read function
Function Mode
/CS
/BHE
A0
/IORD
/IOWR
SD[15:8]
SD[7:0]
Standby Mode
H
X
X
X
X
High-Z
High-Z
Byte Access
L
L
H
L
L
H
L
L
H
H
Not Valid
Odd-Byte
Even-Byte
Not Valid
Word Access
L
L
L
L
H
Odd-Byte
Even-Byte
80186 CPU bus I/O Write function
Function Mode
/CS
/BHE
A0
/IORD
/IOWR
SD[15:8]
SD[7:0]
Standby Mode
H
X
X
X
X
X
X
Byte Access
L
L
H
L
L
H
H
H
L
L
X
Odd-Byte
Even-Byte
X
Word Access
L
L
L
H
L
Odd-Byte
Even-Byte



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