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MPC8540 Datasheet(PDF) 885 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) 885 Page - Freescale Semiconductor, Inc

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Functional Description
MPC8540 PowerQUICC III Integrated Host Processor Reference Manual, Rev. 1
Freescale Semiconductor
16-63
Figure 16-55 illustrates a PCI single-beat read transaction.
Figure 16-55. PCI Single-Beat Read Transaction
Figure 16-56 illustrates a PCI burst read transaction.
Figure 16-56. PCI Burst Read Transaction
16.4.2.7.2 PCI Write Transactions
This section describes PCI single-beat write transactions, and PCI burst write transactions. A PCI
write transaction starts with the address phase, occurring when an initiator asserts PCI_FRAME.
A write transaction is similar to a read transaction except no turnaround cycle is needed following
the address phase because the initiator provides both address and data. The data phases are the
same for both read and write transactions. Although not shown in the figures, the initiator must
SYSCLK
PCI_FRAME
PCI_IRDY
PCI_AD[63:0]
ADDR
PCI_DEVSEL
PCI_TRDY
PCI_C/BE[7:0]
BE
CMD
DATA
SYSCLK
PCI_FRAME
PCI_IRDY
PCI_AD[63:0]
ADDR
PCI_DEVSEL
PCI_TRDY
PCI_C/BE[7:0]
BE1
DATA2
DATA1
CMD
BE2



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