isp1521 NXP Semiconductors, isp1521 Datasheet - Page 39

• Manufacturer Part Number: isp1521
• Description: Hi-speed Universal Serial Bus Hub Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 44.
V
[1]
[2]
Table 45.
V
[1]
[2]
ISP1521_4
Product data sheet
Symbol
Hub timing (downstream ports configured as full-speed)
t
t
t
t
Symbol
Driver characteristics
t
t
t
V
Hub timing (downstream ports configured as full-speed)
t
t
t
t
FHDD
FSOP
FEOPD
FHESK
LR
LF
LRFM
LHDD
LSOP
LEOPD
LHESK
CC
CC
Fig 10. Source differential data jitter
CRS
= 3.0 V to 3.6 V; T
Excluding the first transition from idle state.
Characterized only, not tested. Limits guaranteed by design.
= 3.0 V to 3.6 V; T
Excluding the first transition from idle state.
Characterized only, not tested. Limits guaranteed by design.
T
differential
data lines
PERIOD
3.3 V
Parameter
hub differential data delay (without
cable)
data bit width distortion after SOP
hub EOP delay relative to t
hub EOP output width skew
Parameter
rise time
fall time
rise and fall time matching
output signal crossover voltage
hub differential data delay
data bit width distortion after SOP
hub EOP delay relative to t
hub EOP output width skew
Dynamic characteristics: full-speed source electrical characteristics
Dynamic characteristics: low-speed source electrical characteristics
0 V
is the bit duration corresponding with the USB data rate.
T
PERIOD
amb
amb
= 40 C to +70 C; test circuit
= 40 C to +70 C; test circuit
crossover point
N
HDD
HDD
consecutive
T
transitions
PERIOD
t
Conditions
see
see
see
see
Conditions
see
see
see
see
DJ1
Rev. 04 — 30 March 2006
Figure
Figure 14
Figure 15
Figure 15
Figure 14
Figure 14
Figure 15
Figure 15
N
T
transitions
Figure
Figure
PERIOD
paired
[2]
14; C
22; unless otherwise specified.
22; unless otherwise specified.
t
L
DJ2
crossover point
= 0 pF
[1][2]
…continued
[1]
[2]
[2]
[2]
Min
-
0
Min
75
75
80
1.3
-
0
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Hi-Speed USB hub controller
5
15
60
300
crossover point
Typ
-
-
-
-
Typ
-
-
-
-
-
-
-
-
ISP1521
Max
44
+5
15
+15
Max
300
300
125
2.0
300
+60
200
+300
mgr870
Unit
ns
ns
ns
ns
Unit
ns
ns
%
V
ns
ns
ns
ns
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