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PDF USB2512I Data sheet ( Hoja de datos )
| Número de pieza | USB2512I | |
| Descripción | USB 2.0 High-Speed 2-Port Hub Controller | |
| Fabricantes | SMSC | |
| Logotipo |  |
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USB2512i
Industrial Temperature
Rated USB 2.0 High-Speed
2-Port Hub Controller
PRODUCT FEATURES
Datasheet
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 I2C EEPROM, or
SMBus Slave Port
36-pin (6x6mm) QFN lead-free, RoHS compliant
package
Supports industrial temperature range of -40ºC - 85ºC
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
SMSC USB2512i
DATASHEET
Revision 1.92 (11-28-07)
Free Datasheet http://www.datasheet4u.com/
1 page  
Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller
Datasheet
List of Tables
Table 3.1 USB2512i Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 3.2 SMBus or EEPROM Interface Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 3.3 USB2512i Power, Ground, and No Connect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 3.4 USB2512i Buffer Type Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 4.1 Internal Default, EEPROM and SMBus Register Memory Map. . . . . . . . . . . . . . . . . . . . . . . . 13
Table 4.2 Port Remap Register for Ports 1 & 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 4.3 Reset_N Timing for Default/Strap Option Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 4.4 Reset_N Timing for EEPROM Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 4.5 Reset_N Timing for SMBus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 5.1 DC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 5.2 Pin Capacitance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
SMSC USB2512i
5
DATASHEET
Revision 1.92 (11-28-07)
Free Datasheet http://www.datasheet4u.com/
5 Page 
Industrial Temperature Rated USB 2.0 High-Speed 2-Port Hub Controller
Datasheet
Table 3.2 SMBus or EEPROM Interface Behavior (continued)
CFG_SEL1
0
1
1
CFG_SEL0
1
0
1
SMBUS OR EEPROM INTERFACE BEHAVIOR
Configured as an SMBus slave for external download of user-defined
descriptors.
SMBus slave address 58 (0101100x)
Strap Options Disabled
All Settings Controlled by Registers
Internal Default Configuration
Strap Options Enabled
Bus Power Operation
2-Wire I2C EEPROMS are supported.
Strap Options Disabled
All Settings Controlled by Registers
Table 3.3 USB2512i Power, Ground, and No Connect
PACKAGE SYMBOL 36-QFN EMB
FUNCTION
VDD18
VDD33PLL
14 VDD Core
This pin must have a 1.0μF (or greater) ±20% (ESR <0.1Ω) capacitor to
VSS.
36 VDD 3.3 PLL Regulator Reference
VDDPLL18
VDDA33
VDD33/VDD33CR
NC
+3.3V power supply for the PLL. If the internal PLL 1.8V regulator
is enabled, then this pin acts as the regulator input.
34 VDD PLL
This pin must have a 1.0μF (or greater) ±20% (ESR <0.1Ω) capacitor to
VSS.
5 VDD Analog I/O
10
29 +3.3V Filtered analog PHY power, shared between adjacent ports.
23 VDDIO/VDD 3.3 Core Regulator Reference
15
+3.3V power supply for the Digital I/O
If the internal core regulator is enabled, then VDD33CR acts as the
regulator input.
6 No Connect
7
8 Leave unconnected on the circuit board.
9
18
19
20
21
SMSC USB2512i
11
DATASHEET
Revision 1.92 (11-28-07)
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet USB2512I.PDF ] | |
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