
Chapter 4: Reading CATC Traces PETracer Software User Manual
36 Teledyne LeCroy
AHCI
AHCIleveldecodedisplaysAHCItransactions.PETracerdecodesthe
storagecommandsstartingfromlowerTransactionLayerdecodes.Inthecase
ofAHCI,itwilldecodefirstthePacketLevel,thentheLinkTransactionlevel,
thentheSplitTransactionLevelandfinallytheAHCIdecodelevel.
Note: The trace must contain the device enumeration sequence so the decoding
picks up the associated base addresses and AHCI transactions can be
properly decoded. If the enumeration sequence is not available the base
addresses must be manually entered in the PCIe SSD Configuration dialog
from the Tools menu.
ATA
ATAleveldecodedisplaysATAtransactions.PETracerdecodesthestorage
commandsstartingfromlowerTransactionLayerdecodes.InthecaseofATA,it
willdecodefirstthePacketLevel,thentheLinkTransactionlevel,thentheSplit
TransactionLevel,thenAHCIlevelandfinallytheATAdecodelevel.
Note: The trace must contain the device enumeration sequence so the decoding picks
up the associated base addresses and ATA transactions can be properly
decoded. If the enumeration sequence is not available the base addresses must
be manually entered in the PCIe SSD Configuration dialog from the Tools menu.
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