SMSC USB2512 - Manual

SMSC USB2512
DATASHEET
Revision 1.92 (11-28-07)
Datasheet PRODUCT FEATURES
USB2512
USB 2.0 High-Speed
2-Port Hub Controller
General Description
Th e SMSC 2-Port Hub is a low po wer, 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