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Philips Semiconductors
ISP1521
Hi-Speed USB hub controller
Product data Rev. 03 — 24 November 2004 37 of 53
9397 750 13702
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
[1] For minimum value, the HS termination resistor is disabled and the pull-up resistor is connected. Only during reset, when both the hub
and the device are capable of high-speed operation.
[2] Characterized only, not tested. Limits guaranteed by design.
[3] In the suspend mode, the minimum voltage is 2.7 V.
Resistance
Z
INP
input impedance 10 - - MΩ
Termination
V
TERM
termination voltage for pull-up
resistor on pin RPU
[3]
3.0 - 3.6 V
Table 39: Static characteristics: USB interface block (DP0 to DP7 and DM0 to DM7)
…continued
V
CC
= 3.0 V to 3.6 V; T
amb
=
−
40
°
Cto+70
°
C; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit