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4.61MaximumPacketSizeforPeripheralHostReceiveEndpoint(RXMAXP)
Registers
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TheMaximumPacketSizeforPeripheralHostReceiveEndpoint(RXMAXP)isshowninFigure76and
describedinTable77.
Figure76.MaximumPacketSizeforPeripheralHostReceiveEndpoint(RXMAXP)
1511100
ReservedMAXPAYLOAD
R-0R/W-0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
Table77.MaximumPacketSizeforPeripheralHostReceiveEndpoint(RXMAXP)FieldDescriptions
BitFieldValueDescription
15-11Reserved0Reserved
10-0MAXPAYLOAD0-FFhDefinesthemaximumamountofdatathatcanbetransferredthroughtheselectedReceive
endpointinasingleframe/microframe(high-speedtransfers).Thevaluesetcanbeupto1024
bytes,butissubjecttotheconstraintsplacedbytheUSBSpecificationonpacketsizesforBulk,
Interrupt,andIsochronoustransfersinfull-speedandhigh-speedoperations.Thevaluewrittento
thisregistershouldmatchthewMaxPacketSizefieldoftheStandardEndpointDescriptorforthe
associatedendpoint.Amismatchcouldcauseunexpectedresults.
UniversalSerialBus(USB)Controller 124SPRUGH3–November2008
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