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USB3803 데이터시트(PDF) 32 Page - Microchip Technology

부품명 USB3803
상세설명  USB 2.0 High-Speed Hub Controller Optimized
PDF  99 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB3803 데이터시트(HTML) 32 Page - Microchip Technology

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USB3803
DS00001691B-page 32
 2014-2015 Microchip Technology Inc.
5.3.28
REGISTER E5H: PORT POWER STATUS - PRTPWR
Default = 0x00h
5.3.29
REGISTER E6H: OVER CURRENT SENSE CONTROL - OCS
Default = 0x00h
5.3.30
REGISTER E7H: SERIAL PORT INTERLOCK CONTROL - SP_ILOCK
- Corresponds to I2C_ASEL pins & pausing to connect until write from I2C
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 8.2.2, "Special Behavior of PRTPWR Register Bits," on page 74 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]
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 embed-
ded 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.
Bit Number
Bit Name
Description
7:6
Reserved
Reserved
3:2
Reserved
Reserved



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