isp1122 NXP Semiconductors, isp1122 Datasheet - Page 36

• Manufacturer Part Number: isp1122
• Description: Isp1122 Universal Serial Bus Stand-alone Hub
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 07002
Product specification
Fig 18. Receiver SE0 width tolerance.
Fig 19. Hub differential data delay and SOP distortion.
handbook, full pagewidth
Full-speed timing symbols have a subscript prefix ‘F’, low-speed timings a prefix ‘L’.
SOP distortion:
t SOP = t HDD (next J)
3.3 V
3.3 V
downstream
differential
differential
data lines
data lines
upstream
0 V
0 V
(A) downstream hub delay
crossover
downstream
t HDD(SOP)
point
hub delay
handbook, halfpage
t HDD
differential
data lines
3.3 V
0 V
Rev. 03 — 29 March 2000
crossover
point
downstream
differential
differential
upstream
data
data
t FST
V IH(min)
MGR872
(B) upstream hub delay
crossover
hub delay
upstream
point
t HDD
USB stand-alone hub
© Philips Electronics N.V. 2000. All rights reserved.
crossover
MGR777
ISP1122
point
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