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USB3503 Datasheet(PDF) 36 Page - SMSC Corporation

Part # USB3503
Description  USB 2.0 HSIC High-Speed Hub Controller Optimized for Portable Applications
PDF  82 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

USB3503 Datasheet(HTML) 36 Page - SMSC Corporation

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USB 2.0 HSIC High-Speed Hub Controller Optimized for Portable Applications
Datasheet
SMSC USB3503A
36
Revision 1.1 (02-07-13)
DATASHEET
5.3.27
Register E5h: Port Power Status - PRTPWR
Default = 0x00h
5.3.28
Register E6h: Over Current Sense Control - OCS
Default = 0x00h
BIT NUMBER
BIT NAME
DESCRIPTION
7:4
Reserved
Reserved.
3:1
PRTPWR[3:1] Read Only.
Optional status to SOC indicating that power to the downstream port was
enabled by the USB Host for the specified port. Not required for an embedded
application.
This is a read-only status bit. Actual control over port power is implemented by
the USB Host, OCS register and Downstream Battery Charging logic if enabled.
See Section 8.1.2, "Special Behavior of PRTPWR Register," on page 61 for more
information.
0 = USB Host has not enabled port to be powered or in downstream battery
charging and corresponding OCS bit has been set.
1 = USB Host has enabled port to be powered
0
Reserved
Reserved.
BIT NUMBER
BIT NAME
DESCRIPTION
7:4
Reserved
Reserved. {Note: Software must never write a ‘1’ to these bits}
3
OCS[3]
When SP_ILOCK.OcsPinSel = 1
Register Bit is reserved. Setting bit has no effect on HUB operation, instead
OCS_N device pin controls over current condition reporting.
When SP_ILOCK.OcsPinSel = 0
Optional control from SOC on indicating external current monitor indicating an
over-current condition on port 3 for HUB status reporting to USB host. Also
resets corresponding PRTPWR status register bit. Not required for an embedded
application.
0 = No Over Current Condition
1 = Over Current Condition
2:1
OCS[2:1]
Optional control from SOC on indicating external current monitor indicating an
over-current condition on the specified port for HUB status reporting to USB
host. Also resets corresponding PRTPWR status register bit. Not required for an
embedded application.
0 = No Over Current Condition
1 = Over Current Condition
0
Reserved
Reserved.



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