Philips ISP1521 ユーザーズマニュアル
Philips Semiconductors
ISP1521
Hi-Speed USB hub controller
Product data
Rev. 03 — 24 November 2004
36 of 53
9397 750 13702
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
[1]
All pins are 5 V tolerant.
[2]
The bus capacitance (C
b
) is specified in pF. To meet the specification for V
OL
and the maximum rise time (300 ns), use an external
pull-up resistor with R
max
= 850/C
b
k
Ω
and R
min
= (V
CC
−
0.4)/3 k
Ω
.
Table 38:
Static characteristics: I
2
C-bus interface block
V
CC
= 3.0 V to 3.6 V; T
amb
=
−
40
°
C to +70
°
C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Input pin SCL and input/output pin SDA
V
IL
LOW-level input voltage
-
-
0.9
V
V
IH
HIGH-level input voltage
2.1
-
-
V
V
hys
hysteresis voltage
0.15
-
-
V
V
OL
LOW-level output voltage
-
-
0.4
V
t
f
output fall time V
IH
to V
IL
10 < C
b
= 10 pF to 400 pF
-
0
250
ns
Table 39:
Static characteristics: USB interface block (DP0 to DP7 and DM0 to DM7)
V
CC
= 3.0 V to 3.6 V; T
amb
=
−
40
°
C to +70
°
C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Input levels for high-speed
V
HSSQ
squelch detection threshold
(differential signal amplitude)
(differential signal amplitude)
squelch detected
-
-
100
mV
no squelch detected
150
-
-
mV
V
HSCM
data signaling common-mode
voltage range
voltage range
−
50
-
+500
mV
Output levels for high-speed
V
HSOI
idle state
−
10
-
+10
mV
V
HSOH
data signaling HIGH
360
-
440
mV
V
HSOL
data signaling LOW
−
10
-
+10
mV
V
CHIRPJ
chirp J level (differential voltage)
700
-
1100
mV
V
CHIRPK
chirp K level (differential voltage)
−
900
-
−
500
mV
Input levels for full-speed and low-speed
V
IL
LOW-level input voltage
-
-
0.8
V
V
IH
HIGH-level input voltage (drive)
2.0
-
-
V
V
IHZ
HIGH-level input voltage (floating)
2.7
-
3.6
V
V
DI
differential input sensitivity
|
DP
−
DM
|
0.2
-
-
V
V
CM
differential common-mode range
0.8
-
2.5
V
Output levels for full-speed and low-speed
V
OL
LOW-level output voltage
0
-
0.3
V
V
OH
HIGH-level output voltage
2.8
-
3.6
V
V
CRS
output signal crossover point
voltage
voltage
1.3
-
2.0
V
Leakage current
I
LZ
OFF-state leakage current
−
1
-
+1
µ
A
Capacitance
C
IN
transceiver capacitance
pin to GND
-
-
20
pF