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USB5532B データシート(PDF) 12 Page - Microchip Technology

部品番号 USB5532B
部品情報  2-Port SS/HS USB Hub Controller
PDF  40 Pages
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB5532B データシート(HTML) 12 Page - Microchip Technology

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2-Port SS/HS USB Hub Controller
Datasheet
Revision 1.2 (05-31-13)
12
SMSC USB5532B
DATASHEET
USB PORT CONTROL
PRT_PWR[2:1]/
PRT_CTL[2:1]
O12
USB Power Enable
Enables power to USB peripheral devices downstream.
Note:
This pin also provides configuration strap functions.
See Note 3.1.
VBUS
I
Upstream VBUS Power Detect
This pin can be used to detect the state of the upstream bus power.
SPI INTERFACE (4 PINS)
SPI_CE_N
O12
SPI Enable
SPI_CLK
O12
SPI Clock
SPI_DO
O12
SPI Serial Data Out
The output for the SPI port.
Note:
This pin also provides configuration strap functions.
See Note 3.2.
SPI_DI
I
SPI Serial Data In
The SPI data in to the controller from the ROM. This pin has a weak
internal pull-down applied at all times to prevent floating.
JTAG/OCS INTERFACE
TRST
I
JTAG Asynchronous Reset
Note:
If using the SMBus interface, a pull-up on this signal will
enable Legacy Mode, while leaving it unconnected or pulled-
down will enable Advanced Mode.
Note:
Only available in test mode.
TCK
I
JTAG Clock
This input is used for JTAG boundary scan and has a weak pull-down.
It can be left floating or grounded when not used. If the JTAG is
connected, then this signal will be detected high, and the software
disables the pull up after reset.
Note:
Only available in test mode.
OCS1
Over-Current Sense 1
Input from external current monitor indicating an over-current condition.
Note:
This pin also provides configuration strap functions.
See Note 3.3.
Table 3.1 USB5532B Pin Descriptions (continued)
SYMBOL
BUFFER
TYPE
DESCRIPTION



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