USB2512
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器件描述：USB 2.0 High-Speed 2-Port Hub Controller
器件厂商：SMSC [
SMSC Corporation]
厂商主页：http://www.smsc.com/
文件大小：846.77KB
文件页数：37
PDF阅读：USB2512.pdf (点击阅读器件资料)
摘要：
SMSC USB2512 DATASHEET Revision 1.92 (11-28-07)
Datasheet
PRODUCT FEATURES
USB2512
USB 2.0 High-Speed
2-Port Hub Controller
General Description
The SMSC 2-Port Hub is a low power, OEM
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.
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
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
? 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
— Select Downstream Ports as Non-Removable Ports
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
