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UPD72012 Arkusz danych(PDF) 27 Page - NEC

Numer części UPD72012
Szczegółowy opis  HUB CONTROLLER FOR UNIVERSAL SERIAL BUS
PDF  36 Pages
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Producent  NEC [NEC]
Strona internetowa  http://www.nec.com/
Logo NEC - NEC

UPD72012 Arkusz danych(HTML) 27 Page - NEC

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Data Sheet S13918EJ3V0DS
27
µPD72012
(4) Device event timing
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Time from internal power becoming
effective until device pulls D+/D–
above VIHZ (MIN.) (signal attach)
tSIGATT
100
ms
Time for USB system software to
perform debounce after attach
tATTDB
100
ms
Time for which bus is continuously in
idling state, maximum time device
draws more power than suspend
power
t2SUSP
10
ms
Maximum value of average suspend
time
tSUSAVGI
1s
Period to drive upstream on resume
tDRSMUP
115
ms
Resume restore period
tRSMRCY
Supplied by USB system
software
10
ms
Time to detect reset from upstream
tDETRST
Same as tURLSE0
2.5
10000
µs
Reset restore time
tRSTRCY
10
ms
Inter-packet delay
tIPD
2
Bit time
Inter-packet delay of device
responses using detachable cable
tPDRSP1
6.5
Bit time
Inter-packet delay of device
responses using captive cable
tPDRSP2
7.5
Bit time
SetAddress() completion time
tDSETADDR
50
ms
Time to complete standard request
without data stage
tDRQCMPLTND
50
ms
Time to deliver first and subsequent
data (excluding last) for standard
request
tDRETDATA1
500
ms
Time to deliver last data for standard
request
tDRETDATAN
50
ms



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