參數(shù)資料
型號(hào): UPD720101GJ-UEN
廠商: NEC Corp.
英文描述: USB2.0 HOST CONTROLLER
中文描述: USB2.0主機(jī)控制器
文件頁(yè)數(shù): 24/36頁(yè)
文件大?。?/td> 406K
代理商: UPD720101GJ-UEN
Data Sheet S16265EJ4V0DS
24
μ
PD720101
(2/2)
Parameter
Symbol
Conditions
Min.
Max.
Unit
High-speed Source Electrical Characteristics
Rise time (10 to 90%)
t
HSR
500
ps
Fall time (90 to 10%)
t
HSF
500
ps
Driver waveform
See
Figure 3-6
.
High-speed data rate
t
HSDRAT
479.760
480.240
Mbps
Microframe interval
t
HSFRAM
124.9375
125.0625
μ
s
Consecutive microframe interval difference
t
HSRFI
4 high-
speed
Bit
times
Data source jitter
See
Figure 3-6
.
Receiver jitter tolerance
See
Figure 3-4
.
Hub Event Timings
Time to detect a downstream facing port
connect event
t
DCNN
2.5
2000
μ
s
Time to detect a disconnect event at a
hub’s downstream facing port
t
DDIS
2.0
2.5
μ
s
Duration of driving resume to a
downstream port
t
DRSMDN
Nominal
20
ms
Time from detecting downstream resume
to rebroadcast
t
URSM
1.0
ms
Inter-packet delay for packets traveling in
same direction for high-speed
t
HSIPDSD
88
Bit
times
Inter-packet delay for packets traveling in
opposite direction for high-speed
t
HSIPDOD
8
Bit
times
Inter-packet delay for root hub response for
high-speed
t
HSRSPIPD1
192
Bit
times
Time for which a Chirp J or Chirp K must
be continuously detected during reset
handshake
t
FILT
2.5
μ
s
Time after end of device Chirp K by which
hub must start driving first Chirp K
t
WTDCH
100
μ
s
Time for which each individual Chirp J or
Chirp K in the chirp sequence is driven
downstream during reset
t
DCHBIT
40
60
μ
s
Time before end of reset by which a hub
must end its downstream chirp sequence
t
DCHSE0
100
500
μ
s
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