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 (Cb) is specified in pF. To meet the specification for VOL and the maximum rise time (300 ns), use an external
pull-up resistor with Rmax = 850/CbkΩ and Rmin =(V
CC −0.4)/3 kΩ.
Table 38: Static characteristics: I2C-bus interface block
V
CC
= 3.0 V to3.6 V; T
amb
=
−
40
°
Cto+70
°
C; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
Input pin SCL and input/output pin SDA[1]
VIL LOW-level input voltage - - 0.9 V
VIH HIGH-level input voltage 2.1 - - V
Vhys hysteresis voltage 0.15 - - V
VOL LOW-level output voltage - - 0.4 V
tfoutput fall time VIH to VIL 10<C
b=10pFto400pF [2] - 0 250 ns
Table 39: Static characteristics: USB interface block (DP0 to DP7 and DM0 to DM7)
V
CC
= 3.0 V to3.6 V; T
amb
=
−
40
°
Cto+70
°
C; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
Input levels for high-speed
VHSSQ squelch detection threshold
(differential signal amplitude) squelch detected - - 100 mV
no squelch detected 150 - - mV
VHSCM data signaling common-mode
voltage range
−50 - +500 mV
Output levels for high-speed
VHSOI idle state −10 - +10 mV
VHSOH data signaling HIGH 360 - 440 mV
VHSOL data signaling LOW −10 - +10 mV
VCHIRPJ chirp J level (differential voltage) [1] 700 - 1100 mV
VCHIRPK chirp K level (differential voltage) [1] −900 - −500 mV
Input levels for full-speed and low-speed
VIL LOW-level input voltage - - 0.8 V
VIH HIGH-level input voltage (drive) 2.0 - - V
VIHZ HIGH-level input voltage (floating) 2.7 - 3.6 V
VDI differential input sensitivity |DP −DM|0.2 - - V
VCM differential common-mode range 0.8 - 2.5 V
Output levels for full-speed and low-speed
VOL LOW-level output voltage 0 - 0.3 V
VOH HIGH-level output voltage 2.8 - 3.6 V
VCRS output signal crossover point
voltage
[2] 1.3 - 2.0 V
Leakage current
ILZ OFF-state leakage current −1- +1µA
Capacitance
CIN transceiver capacitance pin to GND - - 20 pF