Data Sheet

TeledyneLeCroyCorporation SwitchtoTransactionsView
344 USBProtocolSuiteUserManual
6.12 Switch to Transactions View
6.12.1 Transaction View from Toolbar
ATransactionisdefinedintheUSBspecificationasthedeliveryofservicetoanendpoint.
Thisconsistsofatokenpacket,anoptionaldatapacket,andanoptionalhandshake
packet.Thespecificpacketsthatmakeupthetransactionvarybaseduponthe
transactiontype.
TheprogramdefaultdisplaymodeisPacketView.Beforeyoucanviewdecoded
transactions,youmustswitchfromPacketViewtoTransactionsView.
ToselectTransactionsView:
1. Click onthetoolbar.
TheTraceViewscreenisre‐drawntodisplayTransactions.
Figure 6.41: Transactions View
Note:ThismenuselectiondisplaysachecknexttoTransactionLevelwhenyouhaveselectedit.When
youwanttoswitchbacktoPacketViewmode,right‐clickanywhereinthetracewindowand
thenleft‐clickTransaction Level.
Note:ThisviewalsoshowsExtensionTransactions,suchastheLinkPowerManagement(LPM)
transactiondefinedbytheUSB2.0LPMspecification,asshownbelow.