Download ISP1521 - Digi-Key

ISP1521
Hi-Speed USB hub controller
23. Figures
Fig 1.
Fig 2.
Fig 3.
Fig 4.
Fig 5.
Fig 6.
Fig 7.
Fig 8.
Fig 9.
Fig 10.
Fig 11.
Fig 12.
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Fig 15.
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Fig 18.
Fig 19.
Fig 20.
Fig 21.
Fig 22.
Fig 23.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . .4
Power-on reset timing . . . . . . . . . . . . . . . . . . . . . 11
External clock with respect to power-on reset . . . 11
Typical voltage drop components in self-powered
mode using individual overcurrent detection . . . .14
Typical voltage drop components in self-powered
mode using global overcurrent detection . . . . . . .14
Configurable hub descriptors . . . . . . . . . . . . . . . .17
ROM or EEPROM map . . . . . . . . . . . . . . . . . . . .18
Overcurrent trip response timing . . . . . . . . . . . . .37
Source differential data jitter . . . . . . . . . . . . . . . .39
Source differential data-to-EOP transition skew and
EOP width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Receiver differential data jitter . . . . . . . . . . . . . . .40
Receiver SE0 width tolerance . . . . . . . . . . . . . . .40
Hub differential data delay and SOP distortion . .41
Hub EOP delay and EOP skew . . . . . . . . . . . . . .41
I2C-bus timing . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Descriptors configuration selection application
diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Adjusting analog overcurrent detection limit
(optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Self-powered hub; individual port power switching;
individual overcurrent detection . . . . . . . . . . . . . .44
Self-powered hub; ganged port power switching;
global overcurrent detection . . . . . . . . . . . . . . . .45
High-speed transmitter and receiver test circuit. .46
Full-speed test circuit . . . . . . . . . . . . . . . . . . . . . .46
Package outline SOT315-1 (LQFP80) . . . . . . . . .47
CD00222695
Product data sheet
© ST-ERICSSON 2010. All rights reserved.
Rev. 07 — 4 February 2010
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