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Philips Semiconductors
Table 31: Dynamic characteristics: overcurrent sense pins
V
= 4.0 to 5.5 V; V
= 0 V; T
CC
GND
Symbol
Parameter
t
overcurrent trip response time
trip
from OCn LOW to PSWn HIGH
[1]
Operating modes 0, 1, 4 and 5; see
Table 32: Dynamic characteristics: analog I/O pins (D , D ); full-speed mode
V
= 4.0 to 5.5 V; V
= 0 V; T
CC
GND
Symbol
Parameter
Driver characteristics
t
rise time
FR
t
fall time
FF
FRFM
differential rise/fall time
matching (t
V
output signal crossover voltage
CRS
Data source timing
t
source differential jitter for
DJ1
consecutive transitions
t
source differential jitter for
DJ2
paired transitions
t
source EOP width
FEOPT
t
source differential data-to-EOP
FDEOP
transition skew
Receiver timing
t
receiver data jitter tolerance for
JR1
consecutive transitions
t
receiver data jitter tolerance for
JR2
paired transitions
t
receiver SE0 width
FEOPR
t
width of SE0 during differential
FST
transition
Hub timing (downstream ports configured as full-speed)
t
hub differential data delay
FHDD
(without cable)
t
data bit width distortion after
FSOP
SOP
t
hub EOP delay relative to t
FEOPD
t
hub EOP output width skew
FHESK
[1]
Test circuit: see
Figure
22.
[2]
Excluding the first transition from Idle state.
[3]
Characterized only, not tested. Limits guaranteed by design.
9397 750 07002
Product specification
= 40 to 85 C; unless otherwise specified.
amb
Conditions
see
Figure 14
Table
4.
= 40 to 85 C; C
amb
Conditions
C
= 50 pF;
L
10 to 90% of V
C
= 50 pF;
L
10 to 90% of V
/t
)
FR
FF
see
Figure 15
see
Figure 15
see
Figure 16
see
Figure 16
see
Figure 17
see
Figure 17
accepted as EOP;
see
Figure 16
rejected as EOP;
see
Figure 18
see
Figure
C
= 0 pF
L
see
Figure 19
see
Figure 20
HDD
see
Figure 20
Rev. 03 — 29 March 2000
Min
[1]
-
= 50 pF; R
= 1.5 k on D to V
L
PU
Min
4
V
OH
OL
4
V
OH
OL
[2]
90
[2] [3]
1.3
[2] [3]
3.5
[2] [3]
4
[3]
160
[3]
2
[3]
18.5
[3]
9
[3]
82
[3]
-
[3]
19;
-
[3]
5
[3]
0
[3]
15
ISP1122
USB stand-alone hub
Typ
Max
-
15
[1]
.; unless otherwise specified.
TERM
Typ
Max
-
20
-
20
-
111.11
-
2.0
-
3.5
-
4
-
175
-
5
-
18.5
-
9
-
-
-
14
-
44
-
5
-
15
-
15
© Philips Electronics N.V. 2000. All rights reserved.
Unit
ms
Unit
ns
ns
%
V
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
33 of 48
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