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USX2064 Datasheet(PDF) 33 Page - Microchip Technology

Part # USX2064
Description  USB 2.0 Hi-Speed 4-Port Hub Controller with Battery Charging
PDF  54 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USX2064 Datasheet(HTML) 33 Page - Microchip Technology

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2023 Microchip Technology Inc. and its subsidiaries
DS00001986E-page 33
USX2064
5.5.1.1
RESET_N for Strapping Option Configuration
FIGURE 5-3:
RESET_N TIMING FOR DEFAULT CONFIGURATION
Name
Description
MIN
TYP
MAX
Units
t1
RESET_N asserted
1
s
t2
CFG_SEL[1:0] setup time
16.7
ns
t3
CFG_SEL[1:0] hold time
16.7
1400
ns
t4
Hub outputs driven to inactive logic states
1.5
2
s
t5
USB attach (see notes)
100
ms
t6
Host acknowledges attach and signals USB reset
100
ms
t7
USB idle
undefined
ms
t8
Completion time for requests (with or without data
stage)
5
msec
Note:
• When in bus-powered mode, the hub and its associated circuitry must not consume more than 100 mA from the
upstream USB power source during t1+t5.
• All power supplies must have reached the operating levels mandated in Section 6.0, "DC Parameters", prior to
(or coincident with) the assertion of
RESET_N.
t1
t4
t5
t6
t7
t8
valid
driven by hub if strap is an output
RESET_N
VSS
CFG_SEL[2:0]
VSS
Hardware
reset asserted
Read
CFG_SEL[1:0]
Drive strap
outputs to
inactive levels
Attach USB
upstream
USB reset
recovery
Idle
Start completion
request response
t2
t3
don t care
don t care



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