參數(shù)資料
型號: UPD720012
廠商: NEC Corp.
英文描述: HUB CONTROLLER FOR UNIVERSAL SERIAL BUS
中文描述: 集線器控制器通用串行總線
文件頁數(shù): 26/36頁
文件大?。?/td> 414K
代理商: UPD720012
26
Data Sheet S13918EJ3V0DS
μ
PD72012
(3) HUB event timing
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Time to detect downstream port
connection event (wake-up HUB)
2.5
2000
μ
s
Time to detect downstream port
connection event (suspend HUB)
t
DCNN
2.5
12000
μ
s
Time to detect disconnect event at
downstream port (wake-up HUB)
2
2.5
μ
s
Time to detect disconnect event at
downstream port (suspend HUB)
t
DDIS
2
10000.0
μ
s
Period to drive resume at downstream
port (from control HUB only)
t
DRSMDN
20
ms
Time from detecting downstream
resume to re-broadcasting
t
URSM
100
μ
s
Time to detect long K state from
upstream
t
URLK
2.5
5.5
μ
s
Time to detect long SE0 from upstream
t
URLSE0
2.5
10000
μ
s
Period to repeat SE0 upstream
t
URPSE0
23
FS Bit
time
Period to transmit SE0 upstream after
EOF1
t
UDEOP
Optional
2
FS Bit
time
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