Filter
Top Products
Philips Semiconductors
ISP1122
USB stand-alone hub
Product specification Rev. 03 — 29 March 2000 35 of 48
9397 750 07002
© Philips Electronics N.V. 2000. All rights reserved.
T
PERIOD
is the bit duration corresponding with the USB data rate.
Fig 15. Source differential data jitter.
handbook, full pagewidth
MGR870
T
PERIOD
differential
data lines
crossover point
crossover point crossover point
consecutive
transitions
N × T
PERIOD
+ t
DJ1
paired
transitions
N × T
PERIOD
+ t
DJ2
+3.3 V
0 V
T
PERIOD
is the bit duration corresponding with the USB data rate.
Full-speed timing symbols have a subscript prefix ‘F’, low-speed timings a prefix ‘L’.
Fig 16. Source differential data-to-EOP transition skew and EOP width.
h
andbook, full pagewidth
MGR776
T
PERIOD
differential
data lines
crossover point
differential data to
SE0/EOP skew
N × T
PERIOD
+ t
DEOP
source EOP width: t
EOPT
receiver EOP width: t
EOPR
crossover point
extended
+3.3 V
0 V
T
PERIOD
is the bit duration corresponding with the USB data rate.
Fig 17. Receiver differential data jitter.
handbook, full pagewidth
MGR871
T
PERIOD
t
JR
differential
data lines
consecutive
transitions
N × T
PERIOD
+ t
JR1
paired
transitions
N × T
PERIOD
+ t
JR2
+3.3 V
0 V
t
JR1
t
JR2