PCI Functional Description
2-5
2.1.2.1 Interrupt Acknowledge Command
The LSI53C1000 does not respond to this command as a slave and it
never generates this command as a master.
2.1.2.2 Special Cycle Command
The LSI53C1000 does not respond to this command as a slave and it
never generates this command as a master.
2.1.2.3 I/O Read Command
The LSI53C1000 uses the I/O Read command to read data from an
agent mapped in the I/O address space. When decoding I/O cycles, the
LSI53C1000 decodes the lower 32 address bits and ignores the
upper 32 address bits.
2.1.2.4 I/O Write Command
The LSI53C1000 uses the I/O Write command to write data to an agent
mapped in the I/O address space. When decoding I/O cycles, the
LSI53C1000 decodes the lower 32 address bits and ignores the
upper 32 address bits.
1001
Reserved
N/A
N/A
1010
Configuration Read
No
Yes
1011
Configuration Write
No
Yes
1100
Memory Read Multiple
Yes
1
Yes (defaults to 0110)
1101
Dual Address Cycle (DAC)
Yes
Yes
1110
Memory Read Line
Yes
1
Yes (defaults to 0110)
1111
Memory Write and
Invalidate
Yes
2
Yes (defaults to 0111)
1. See the
register.
2. See the
register.
Table 2.1
PCI Bus Commands and Encoding Types (Cont.)
C_BE[3:0]/ Command Type
Supported
as Master
Supported
as Slave
Содержание LSI53C1000
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Страница 28: ...1 12 Introduction...
Страница 234: ...4 124 Registers...
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Страница 350: ...6 76 Specifications Figure 6 42 LSI53C1000 329 Ball Grid Array Bottom view...
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Страница 360: ...A 8 Register Summary...
Страница 376: ...IX 12 Index...