USB2514I
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器件描述：Industrial Temperature Rated USB 2.0 High-Speed 4-Port Hub Controller
器件厂商：SMSC [
SMSC Corporation]
厂商主页：http://www.smsc.com/
文件大小：1011.99KB
文件页数：49
PDF阅读：USB2514I.pdf (点击阅读器件资料)
摘要：
SMSC USB2514i DATASHEET Revision 1.98 (11-19-07)
Datasheet
PRODUCT FEATURES
USB2514i
Industrial Temperature
Rated USB 2.0 High-Speed
4-Port Hub Controller
General Description
The SMSC 4-Port Hub is low power, OEM configurable,
MTT (multi transaction translator) hub controller IC with
4 downstream ports for embedded USB solutions. The
4-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 4-
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 4 downstream ports
? High-performance multiple transaction translator
MultiTRAK? Technology Provides one transaction
translator per port
? Enhanced OEM configuration options available
through either a single serial i2C EEPROM, or
SMBus Slave Port
? 36-pin (6x6mm) and 48-Pin (7x7mm) QFN lead-free,
RoHS compliant packages
? Footprint compatible with USB2513i and USB2512i
(36-pin QFN) to provide designers with flexibility
regarding the quantity of USB expansion ports
utilized without redesign
? Supports industrial temperature range of -40?C to
85?C
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 24/48MHz clock input
? USB host/device speed indicator. Per-port 3-color
LED drivers that indicate the speed of USB host and
device connection - hi-speed (480 Mbps), full-speed
(12 Mbps), low-speed (1.5 Mbps) (48-pin QFN)
? 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 4-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
? Configure the polarity of downstream port power
control signals
? Indicate the maximum current that the 4-port hub
consumes from the USB upstream port
? Indicate the maximum current required for the hub
controller
? Supports Custom String Descriptor up to 31
characters in length for:
– Product String
– Manufacturer String
– Serial Number String
? Pin Selectable Options for Default Configuration
— Select Downstream Ports as Non-Removable Ports
— Select Downstream Ports as Disabled Ports
— Select Downstream Port Power Control and Over-
Current Detection on a Ganged or Individual Basis
— Select Downstream Port Power Control Polarity
— Select USB Signal Drive Strength
— Select USB Differential Pair Pin location
— Select on-chip or off-chip voltage regulator mode
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
