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PM7366-PI Scheda tecnica(PDF) 267 Page - PMC-Sierra, Inc

Il numero della parte PM7366-PI
Spiegazioni elettronici  FRAME ENGINE AND DATA LINK MANAGER
PDF  286 Pages
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Produttore elettronici  PMC [PMC-Sierra, Inc]
Homepage  http://www.pmc-sierra.com
Logo PMC - PMC-Sierra, Inc

PM7366-PI Scheda tecnica(HTML) 267 Page - PMC-Sierra, Inc

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RELEASED
PM7366 FREEDM-8
DATA SHEET
PMC-1970930
ISSUE 4
FRAME ENGINE AND DATA LINK MANAGER
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA,INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
254
Figure 30 – PCI Target Disconnect
PCICLK
FRAMEB
123
45
6
T
STOPB
DEVSELB
The PCI Target Abort Diagram (Figure 31) illustrates the case when the target wants to abort the
current cycle. Note, when the FREEDM-8 is the target, it never aborts the current cycle. A target
abort is an indication of a serious error and no data is transferred.
A target can terminate the current cycle by asserting STOPB and negating DEVSELB. If the
FREEDM-8 is the initiator and the target aborts the current access, the abort condition is reported
to the PCI Host.
During clock 1, a cycle is in progress.
During clock 2, the target negates DEVSELB and TRDYB and asserts STOPB to indicate an abort
condition to the initiator.
During clock 3, the initiator negates FRAMEB in response to the abort request.
During clock 4, the target negates STOPB signal in response to the FRAMEB signal being
negated.
Figure 31 – PCI Target Abort
PCICLK
FRAMEB
123
45
6
T
TRDYB
DEVSELB
STOPB



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