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MPC8540 Datasheet(PDF) 910 Page - Freescale Semiconductor, Inc

Part # MPC8540
Description  MPC8540 PowerQUICC III??Integrated Host Processor Reference Manual
PDF  1302 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPC8540 Datasheet(HTML) 910 Page - Freescale Semiconductor, Inc

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MPC8540 PowerQUICC III Integrated Host Processor Reference Manual, Rev. 1
16-88
Freescale Semiconductor
PCI/PCI-X Bus Interface
Figure 16-72. DWORD (4-Byte) Write Transaction
Figure 16-73 shows a DWORD read transaction that can be used for a memory read DWORD or
an I/O read transaction. This example has two target initial wait states before data is transfered.
Figure 16-73. DWORD (4-Byte) Read Transaction
16.4.3.5 PCI-X Wait State and Termination Rules
PCI-X adds the following restrictions to wait state and disconnect rules:
•
Initiators are not permitted to insert wait states.
•
Targets are not permitted to insert wait states after the initial data phase; that is, targets are
only allowed to insert wait states on the initial data phase.
BE = Fh
PCI_CLK
PCI_FRAME
PCI_AD[31:0]
PCI_C/BE[3:0]
PCI_IRDY
PCI_TRDY
12
3
4
5
6
78
9
10
PCI_DEVSEL
ADDR
ATTR
CMD
ATTR
DATA0
PCI_CLK
PCI_FRAME
PCI_AD[31:0]
PCI_C/BE[3:0]
PCI_IRDY
PCI_TRDY
123
4
5
6
7
89
10
11
12
PCI_DEVSEL
ADDR
ATTR
ATTR
CMD
DATA0
BE = Fh



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