Oki B431L6

Appendix B USB Interface
Oki Data CONFIDENTIAL
44983601TH Rev.1
AppendixB-2/
Note!  TheEOPwidthisdenedbythebittimeforadevicetypeofthedevicereceivingEOP.
  Thebittimeisanapproximatevalue.
(8) SignalLevel
 • InputandOutputLevel
 • Signallevel
Parameter Signal Minimum Maximum Unit
Inputlevel:
High(Driven) V I H 2 . 0 V
High(Floating) VIH 2.7 3.6 V
Low VIL 0.8 V
Outputlevel:
Low OL 0.0 0.3 V
High(Driven) OH 2.8 3.6 V
Outputsignalcrossovervoltage VCRS 1.3 2.0 V
BusStatus
SignalLevel
Request Acceptance
Difference"1" (D+)-(D-)>200mVandD+>
VIH(Min.)
(D+)-(D-)>200mV
Difference"0" (D-)-(D+)>200mVandD->
VIH(Min.)
(D-)-(D+)>200mV
Single-ended0(SE0) D+andD-<VIL(Max.) D+andD-<VIH(Min.)
DataJstate:
Lowspeed
Fullspeed
Difference"0"
Difference"1"
DataKstate:
Lowspeed
Fullspeed
Difference"1"
Difference"0"
IdlingState
LowSpeed
FullSpeed
D->VIH(Min.)andD+<VIL(Max.)
D+>VIH(Min.)andD-<VIL(Max.)
D->VIH(Min.)andD+<VIH(Min.)
D+>VIH(Min.)andD-<VIH(Min.
RestartState DataKState
Startofthepacket
(SOP)
ThedatalineswitchesfromtheidlingtotheKstate
EndofthePacket
(EOP)
≥
SEOof1bittime,andthen,Jstate
ofIbittime
1
≥
SEOof1bittime,andthen,J
state.
Notconnected
(Downstreamport)
SEOin
≥
2.5μs
Connected
(Downstreamport)
Idlingin
≥
2.5μs Idlingin
≥
2.5μs
Reset In
≥
10ms,D+andD-<VIL(Max.) In
≥
2.5μs,D+andD-<VIL(Max.)