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USB2512 Datasheet

  • USB2512

  • USB 2.0 High-Speed 2-Port Hub Controller

  • 37頁(yè)

  • SMSC   SMSC

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USB2512
USB 2.0 High-Speed
2-Port Hub Controller
PRODUCT FEATURES
General Description
T h e S M S C 2 - P o r t H u b i s a l o w p o w e r, O E M
configurable, STT (Single transaction translator) hub
controller IC with 2 downstream ports for embedded
USB solutions. The 2-port hub is fully compliant with the
USB 2.0 Specification and will attach to an upstream
port as a Full-Speed Hub or as a Full-/High-Speed Hub.
The 2-Port Hub supports Low-Speed, Full- Speed, and
High-Speed (if operating as a High-Speed Hub)
downstream devices on all of the enabled downstream
ports.
Datasheet
Programmable USB signal drive strength. Recover
USB signal integrity due to compromised system
environment using 2-level driving strength resolution
Select the presence of a permanently hardwired USB
peripheral device on a port by port basis
Configure the delay time for filtering the over-current
sense inputs
Configure the delay time for turning on downstream
port power
Indicate the maximum current that the 2-port hub
consumes from the USB upstream port
Indicate the maximum current required for the hub
controller
Pin Selectable Options for Default Configuration
鈥?Select Downstream Ports as Non-Removable Ports
General Features
Hub Controller IC with 2 downstream ports
Enhanced OEM configuration options available
through either a single serial I
2
C EEPROM, or
SMBus Slave Port
36-pin (6x6mm) QFN lead-free, RoHS compliant
package
Applications
LCD monitors and TVs
Multi-function USB peripherals
PC mother boards
Set-top boxes, DVD players, DVR/PVR
Printers and scanners
PC media drive bay
Portable hub boxes
Mobile PC docking
Embedded systems
Hardware Features
Low power operation
Full Power Management with individual or ganged
power control of each downstream port
On-chip Power On Reset (POR)
Internal 1.8V Voltage Regulator
Fully integrated USB termination and Pull-up/Pull-
down resistors
On Board 24MHz Crystal Driver, Resonator or
External 24MHz clock input
Enhanced EMI rejection and ESD protection
performance
OEM Selectable Features
Customize Vendor ID, Product ID, and Device ID
Select whether the hub is part of a compound device
(When any downstream port is permanently
hardwired to a USB peripheral device, the hub is part
of a compound device)
Flexible port mapping and disable sequence. Ports
can be disabled/reordered in any order to support
multiple product SKUs. Hub will automatically reorder
the remaining ports to match the Host controller's
numbering scheme.
Programmable USB differential-pair pin location.
Ease PCB layout by aligning USB signal lines directly
to connectors
SMSC USB2512
DATASHEET
Revision 1.92 (11-28-07)

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