SMSC USB2514 User Manual
USB2514
USB 2.0 High-Speed 4-Port
Hub Controller
PRODUCT FEATURES
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 4Port Hub supports Low-Speed, Full-Speed, and HighSpeed (if operating as a High-Speed Hub) downstream
devices on all of the enabled downstream ports.
General Features
Hu b Controller IC with 4 downstream ports
Hi gh-performance multiple transaction translator
MultiTRAK™ Technology Provides one transaction
translator per port
Enh anced OEM configuration options available
through either a single serial i2C EEPROM, or
SMBus Slave Port
3 6-pin (6x6mm) and 48-Pin (7x7mm) QFN lead-free,
RoHS compliant packages
F ootprint compatible with USB2513 and USB2512
(36-pin QFN) to provide designers with flexibility
regarding the quantity of USB expansion ports
utilized without redesign
Hardware Features
L ow power operation
Full Power Management with individual or ganged
power control of each downstream port
On-chip Power On Reset (POR)
Interna l 1.8V Voltage Regulator
Full y integrated USB termination and Pull-up/Pull-
down resistors
On Boa rd 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)
Enh anced EMI rejection and ESD protection
performance
OEM Selectable Features
Cu stomize 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)
Datasheet
Flexi ble 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
Prog rammable USB differential-pair pin location
Ease PCB layout by aligning USB signal lines directly
to connectors
Prog rammable 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
C onfigure the delay time for filtering the over-current
sense inputs
C onfigure the delay time for turning on downstream
port power
C onfigure the polarity of downstream port power
control signals
Indicate the maximum current that the 4-port hub
consumes from the USB upstream port
Ind icate the maximum current required for the hub
controller
Su pports Custom String Descriptor up to 31
characters in length for:
– Product String
– Manufacturer String
– Serial Number String
Pi n 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
L CD monitors and TVs
Multi-function USB peripherals
PC mo ther boards
Set-top b oxes, DVD players, DVR/PVR
Prin ters and scanners
PC me dia drive bay
Po rtable hub boxes
Mobile PC docking
Embedded systems
SMSC USB2514 DATASHEET Revision 1.98 (11-19-07)
USB 2.0 High-Speed 4-Port Hub Controller
ORDER NUMBERS:
USB2514-AEZG FOR 36 PIN, QFN LEAD-FREE ROHS COMPLIANT PACKAGE
USB2514-HZH FOR 48 PIN, QFN LEAD-FREE ROHS COMPLIANT PACKAGE
Datasheet
80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123
Copyright © 2007 SMSC or its subsidiaries. All rights reserved.
Circuit diagrams and other information relating to SMSC products are included as a mean s of illustrating typical applications. Conse quently, complete information sufficient for
construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC
reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications
before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent
rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently da ted
version of SMSC's standard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors
known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not
designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property
damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of
this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSC’s website at http://www.smsc.com. SMSC is a registered
trademark of Standard Microsystems Corporation (“SMSC”). Product names and company names are the trademarks of their respective holders.
SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES, INCLUDING WITHOUT LIMITATION ANY AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND AGAINST INFRINGEMENT AND THE LIKE, AND ANY AND ALL WARRANTIES ARISING FROM ANY COURSE
OF DEALING OR USAGE OF TRADE. IN NO EVENT SHALL SMSC BE LIABLE FOR ANY DIRECT, INCIDENTAL, INDIRECT, SPECIAL, PUNITIVE, OR CONSEQUENTIAL
DAMAGES; OR FOR LOST DATA, PROFITS, SAVINGS OR REVENUES OF ANY KIND; REGARDLESS OF THE FORM OF ACTION, WHETHER BASED ON CONTRACT;
TORT; NEGLIGENCE OF SMSC OR OTHERS; STRICT LIABILITY; BREACH OF WARRANTY; OR OTHERWISE; WHETHER OR NOT ANY REMEDY OF BUYER IS HELD
TO HAVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Revision 1.98 (11-19-07) 2 SMSC USB2514
DATASHEET
USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
Table of Contents
Chapter 1 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Chapter 2 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Chapter 3 Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 PIN Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Buffer Type Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Chapter 4 Configuration Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.1 4-Port Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.1.1 Hub Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.1.2 VBus Detect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2 36 QFN and 48 QFN Feature Differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.3 EEPROM Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.3.1 Internal Register Set (Common to EEPROM and SMBus) . . . . . . . . . . . . . . . . . . . . . . . 19
4.3.2 I2C EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.3.3 In-Circuit EEPROM Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.4 SMBus Slave Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.4.1 Bus Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.4.2 Invalid Protocol Response Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.4.3 General Call Address Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.4.4 Slave Device Time-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.4.5 Stretching the SCLK Signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.4.6 SMBus Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.4.7 Bus Reset Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.4.8 SMBus Alert Response Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.5 Default Configuration Option: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.6 Default Strapping Options: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.7 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.7.1 Internal POR Hardware Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.7.2 External Hardware RESET_N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.7.3 USB Bus Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Chapter 5 DC Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.1 Maximum Guaranteed Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.2 Recommended Operating Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Chapter 6 AC Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.1 Oscillator/Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.1.1 SMBus Interface:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.1.2 I2C EEPROM: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.1.3 USB 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Chapter 7 Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
SMSC USB2514 3 Revision 1.98 (11-19-07)
DATASHEET
USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
List of Figures
Figure 1.1 USB2514 36-Pin QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 1.2 USB2514 48-Pin QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 2.1 USB2514 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 4.1 Block Write. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 4.2 Block Read. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 4.3 LED Strapping Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 4.4 Reset_N Timing for Default/Strap Option Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 4.5 Reset_N Timing for EEPROM Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 4.6 Reset_N Timing for SMBus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 6.1 Typical Crystal Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 6.2 Formula to find value of C1 and C2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 7.1 36-Pin QFN, 6x6mm Body, 0.5mm Pitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Figure 7.2 48-Pin QFN, 7x7mm Body, 0.5mm Pitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Revision 1.98 (11-19-07) 4 SMSC USB2514
DATASHEET
USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
List of Tables
Table 3.1 USB2514 Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 3.2 SMBus or EEPROM Interface Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 3.3 USB2514 Power, Ground, No Connect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 3.4 USB2514 Buffer Type Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 4.1 36 QFN and 48 QFN Feature Differences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 4.2 Internal Default, EEPROM and SMBus Register Memory Map. . . . . . . . . . . . . . . . . . . . . . . . 19
Table 4.3 Port Remap Register for Ports 1 & 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 4.4 Port Remap Register for Ports 3 & 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 4.5 Reset_N Timing for Default/Strap Option Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 4.6 Reset_N Timing for EEPROM Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 4.7 Reset_N Timing for SMBus Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 5.1 DC Electrical Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Table 5.2 Pin Capacitance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
SMSC USB2514 5 Revision 1.98 (11-19-07)
DATASHEET
Chapter 1 Pin Configuration
USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
SUSP_IND/LOCAL_PWR/NON_REM0
VDDA33
USBUP_DM
USBUP_DP
XTAL2
XTAL1/CLKIN
VDD18PLL
RBIAS
VDD33PLL
RESET_N24HS_IND/CFG_SEL123SCL/SMBCLK/CFG_SEL0
VBUS_DET
26
27
25
28
29
30
31
32
33
(Top V iew Q F N -36 )
SMSC
USB2514
34
Thermal Slug
35
(must be connected to VSS)
36
1
2
3
4
VDD33
SDA/SMBDATA/NON_REM121OCS4_N20PRTPWR4
22
5
6
VDDA33
OCS3_N
19
18
17
16
15
14
13
12
11
10
7
8
9
PRTPWR3
OCS2_N
PRTPWR2
VDD33CR
VDD18
OCS1_N
PRTPWR1
TEST
VDDA33
USBDN1_DP/PRT_DIS_P1
USBDN1_DM/PRT_DIS_M1
USBDN2_DP/PRT_DIS_P2
USBDN2_DM/PRT_DIS_M2
USBDN3_DP/PRT_DIS_P3
USBDN3_DM/PRT_DOS_M3
USBDN4_DP/PRT_DIS_P4
USBDN4_DM/PRT_DIS_M4
Indicates pins on the bottom of the device.
Figure 1.1 USB2514 36-Pin QFN
Revision 1.98 (11-19-07) 6 SMSC USB2514
DATASHEET
USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
LED_A1_N/PRT_SWP1
PRTPWR_POL
SUSP_IND/LOCAL_PWR/NON_REM0
SEL48
VDDA33
USBUP_DM
USBUP_DP
XTAL2
XTAL1/CLKIN
VDD18PLL
RBIAS
VDD33PLL
37
38
39
40
41
42
43
44
45
46
47
48
LED_B1_N/BOOST034VBUS_DET33RESET_N
35
36
HS_IND/CFG_SEL131SCL/SMBCLK/CFG_SEL030VDD3329SDA/SMBDATA/NON_REM128OCS4_N
CFG_SEL2
32
SMSC
USB2514
(Top Vie w QFN-48 )
Thermal Slug
(must be connected to VSS)
1
2
3
4
5
VDDA33
PRTPWR426OCS3_N25LED_A2_N/PRT_SWP2
27
24
23
22
21
20
19
18
17
16
15
14
13
6
7
8
9
10
11
12
VDDA33
REG_EN
LED_B4_N
LED_B2_N/BOOS T1
LED_A3_N/PRT_SW P3
LED_B3_N/GANG_E N
PRTPWR3
OCS2_N
PRTPWR2
VDD33CR
VDD18
OCS1_N
PRTPWR1
TEST
LED_A4_N/PRT_SW P4
USBDN1_DP/PRT_DIS_P1
USBDN1_DM/PRT_DIS_M1
USBDN2_DM/PRT_DIS_M2
USBDN2_DP/PRT_DIS_P2
USBDN3_DM/PRT_DIS_M3
USBDN3_DP/PRT_DIS_P3
USBDN4_DP/PRT_DIS_P4
USBDN4_DM/PRT_DIS_M4
Indicates pins on the bottom of the device.
Figure 1.2 USB2514 48-Pin QFN
SMSC USB2514 7 Revision 1.98 (11-19-07)
DATASHEET
Chapter 2 Block Diagram
USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
To Upstream
V
BUS
Bus-Power
Detect/V
BUS
Pulse
Upstream USB
Data
Upstream
PHY
Repeater
24 MHz Crystal
3.3V
1.8V Reg
PLL
SIE
To EEPROM or
SMBus Master
1.8V
SCKSD
Serial
Interface
Controller
TT #3TT #2TT #1
TT #4
Port
Controller
PHY#1
USB Data
Downstream
Port #1
OC
Sense
Switch
Driver
LED
Drivers
OC Sense
Switch/LED
Drivers
Routing & Port Re-Ordering Logic
Port #2
OC
PHY#2
USB Data
Downstream
Sense
Switch
Driver
LED
Drivers
OC Sense
Switch/LED
Drivers
Figure 2.1 USB2514 Block Diagram
PHY#3
USB Data
Downstream
Port #3
OC
Sense
Switch
Driver
LED
Drivers
OC Sense
Switch/LED
Drivers
PHY#4
USB Data
Downstream
Port #4
OC
Sense
Switch
Driver
LED
Drivers
OC Sense
Switch/LED
Drivers
Revision 1.98 (11-19-07) 8 SMSC USB2514
DATASHEET
USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
Chapter 3 Pin Descriptions
3.1 PIN Descriptions
This section provides a detailed description of each signal. The signals are arranged in functional
groups according to their associated interface.
The “N” symbol in the signal name indicates that the active, or asserted, state occurs when the signal
is at a low voltage level. When “N” is not present before the signal name, the signa l is asserted when
at the high voltage level.
The terms assertion and negation are used exclusively. This is done to avoid confusion when worki ng
with a mixture of “active low” and “active high” signals. The term assert, or assertion, indi cates that a
signal is active, independent of whether that level is represented by a high or low voltage. The term
negate, or negation, indicates that a signal is ina ctive.
Table 3.1 USB2514 Pin Descriptions
SYMBOL 36 QFN 48 QFN
USBUP_DP
USBUP_DM
VBUS_DET 27 35 I/O12 Detect Upstream VBUS Power
USBDN_DP[4:1]/
PRT_DIS_P[4:1]
&
31
30
43
42
DOWNSTREAM 4-PORT USB 2.0 INTERFACE
9
7
4
2
9
7
4
2
BUFFER
TYPE DESCRIPTION
UPSTREAM USB INTERFACES
IO-U USB Bus Data
These pins connect to the upstream USB bus data
signals (Host port, or upstream hub).
Detects state of Upstream VBUS power . The SMSC Hub
monitors VBUS_DET to determine when to assert the
internal D+ pull-up resistor (signaling a connect event).
When designing a detachable hub, this pin must be
connected to the VBUS power pin of the USB port that
is upstream of the hub.
For self-powered applications with a permanently
attached host, this pin must be connected to 3.3V
(typically VDD33).
IO-U High-Speed USB Data & Port Disable Strap Option
These pins connect to the downstream USB peripheral
devices attached to the hub’s port.
USBDN_DM[4:1]/
PRT_DIS_M[4:1]
PRTPWR[4:1] 20
SMSC USB2514 9 Revision 1.98 (11-19-07)
8
6
3
1
18
16
12
27
21
19
15
8
6
3
1
O12 USB Power Enable
Downstream Port Disable Strap option:
If this strap is enabled by package and configuration
settings (see Table 3.2), th is pin will be sampled at
RESET_N negation to determine if the port is disabled.
Both USB data pins for the corresponding port must be
tied to the VDDA33 to disable the associated
downstream port.
Enables power to USB peripheral devices downstre am.
The active signal level of the PRTPWR[4:1] pins is
determined by the Power Polarity Strapping function of
the PRTPWR_POL pin.
DATASHEET
Table 3.1 USB2514 Pin Descriptions (continued)
SYMBOL 36 QFN 48 QFN
USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
BUFFER
TYPE DESCRIPTION
LED_A[4:1]_N/
PRT_SWP[4:1]
n/a 13
23
25
37
I/O12 Port LED Indicators & Port Swap strapping option
Indicator LED for ports 1-4. Will be active low when LED
support is enabled via EEPROM or SMBus.
If this strap is enabled by package and configuration
settings (see Table 3.2), th is pin will be sampled at
RESET_N negation to determine the electrical
connection polarity of the downstream USB Port pins
(USB_DP and USB_DM).
Also, the active state of the LED will be determined as
follows:
‘0’ = Port Polarity is normal, and the LED is active high.
‘1’ = Port Polarity (for USB_DP and USB_DM) is
swapped, and the LED is active low.
LED_B4_N n/a 12 I/O12 Enhanced Port 4 LED
Enhanced Indicator LED for port 4. Will be active low
when LED support is enabled via EEPROM or SMBus.
LED_B3_N/
GANG_EN
n/a 22 I/O12 Enhanced Port 3 LED & Ga ng Power and Overcurrent
Strap Option
Enhanced Indicator LED for port 3. Will be active low
when LED support is enabled via EEPROM or SMBus.
GANG_EN: Selects between Gang or Individual Port
power and Over Current sensing.
LED_B[2:1]_N/
BOOST[1:0]
n/a 24
36
If this strap is enabled by package and configuration
settings (see Table 3.2), th is pin will be sampled at
RESET_N negation to determine the mode as fo llows:
‘0’ = Individual sensing & switching, and LED_B3_N is
active high.
‘1’ = Ganged sensing & switching, and LED_B3_N is
active low.
I/O12 Enhanced Port [2:1] LED & Phy Boost strapping option
Enhanced Indicator LED for ports 1 & 2. Will be active
low when LED support is enabled via EEPROM or
SMBus.
Revision 1.98 (11-19-07) 10 SMSC USB2514
DATASHEET
USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
Table 3.1 USB2514 Pin Descriptions (continued)
SYMBOL 36 QFN 48 QFN
BUFFER
TYPE DESCRIPTION
BOOST[1:0], If this strap is enabled by package and
configuration settings (see Table 3.2), this pin will be
sampled at RESET_N negation to determine if all PHY
ports (upstream and downstream) operate at a normal
or boosted electrical level. Also, the active state of the
LEDs will be determined as follows:
See for BOOST values: Section 4.3.1.26, "Register F6h:
Boost_Up" and Section 4.3.1.27, "Register F8h:
Boost_4:0".
BOOST[1:0] = BOOST_IOUT[1:0]
BOOST[1:0] = ‘00’,
LED_B2_N is active high,
LED_B1_N is active high.
BOOST[1:0] = ‘01’,
LED_B2_N is active high,
LED_B1_N is active low.
BOOST[1:0] = ‘10’,
LED_B2_N is active low,
LED_B1_N is active high.
BOOST[1:0] = ‘11’,
LED_B2_N is active low,
LED_B1_N is active low.
PRTPWR_POL n/a 38 IPU Port Power Polarity strapping
Port Power Polarity strapping determination for the
active signal polarity of the [4:1]PRTPWR pins.
While RESET_N is asserted, the logic state of this pin
will (through the use of internal combinatorial logic)
determine the active state of the [4:1]PRTPWR pins in
order to ensure that downstream port power is not
inadvertently enabled to inacti ve ports during a
hardware reset.
When RESET_N is negated, the logic value will be
latched internally, and will retain the active signal polarity
for the PRTPWR[4:1] pins.
‘1’ = PRTPWR[4:1]_P/N pins have an active ‘high’
polarity
‘0’ = PRTPWR[4:1]_P/N pins have an active ‘low’
polarity
Warning: Active Low port power controllers may glitch
the downstream port power when system power is first
applied. Care should be taken when designing with
active low components!
Note: If PRTPWR_POL is not an available pin on the
package, the hub will support active high
power controllers only!
OCS[4:1]_N 21
19
17
13
SMSC USB2514 11 Revision 1.98 (11-19-07)
28
26
20
16
IPU Over Current Sense
Input from external current monitor indicating an overcurrent condition.
{Note: Contains internal pull-up to 3.3V supply}
DATASHEET
Table 3.1 USB2514 Pin Descriptions (continued)
BUFFER
SYMBOL 36 QFN 48 QFN
TYPE DESCRIPTION
RBIAS 35 47 I-R USB Transceiver Bias
A 12.0kΩ (+/- 1% ) resistor is attached from ground to
this pin to set the transceiver’s internal bias settings.
SERIAL PORT INTERFACE
USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
SDA/
SMBDATA/
NON_REM1
SCL/
SMBCLK/
CFG_SEL0
HS_IND/
CFG_SEL1
22 29 I/OSD12 Serial Data / SMB Data & Port Non Removable Strap
Option
NON_REM1: Non removable port strap option.
If this strap is enabled by package and configuration
settings (see Table 3.2), th is pin will be sampled (in
conjunction with LOCAL_PWR/SUSP_IND/NON_REM0)
at RESET_N negation to determine if imports [4:1]
contain permanently attached (non-removable) devices:
NON_REM[1:0] = ‘00’, All ports are removable,
NON_REM[1:0] = ‘01’, Port 1 is nonremovable,
NON_REM[1:0] = ‘10’, Ports 1 & 2 are non-removable,
NON_REM[1:0] = ‘11’, Ports 1, 2 & 3 are non-removable
24 31 I/OSD12 Serial Clock (SCL)
SMBus Clock (SMBCLK)
Configuration Select_SEL0: The logic state of this
multifunction pin is internally latched on the rising edge
of RESET_N (RESET_N negation), and will determine
the hub configuration method as described in Table 3.2,
"SMBus or EEPROM Interface Behavior".
25 32 I/O12 High-Speed Upstream port indictor & Configuration
Programming Select
HS_IND: High Speed Indicator for upstream port
connection speed.
The active state of the LED will be determined as
follows:
CFG_SEL1 = ‘0’,
HS_IND is active high,
CFG_SEL1 = ‘1’,
HS_IND is active low,
‘Asserted’ = Hub is connected at HS
‘Negated’ = Hub is connected at FS
CFG_SEL1: The logic state of this pin is internally
latched on the rising edge of RESET_N (RESET_N
negation), and will determine the hub configuration
method as described in Table 3.2, "SMBus or EEPROM
Interface Behavior".
Revision 1.98 (11-19-07) 12 SMSC USB2514
DATASHEET
USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
Table 3.1 USB2514 Pin Descriptions (continued)
BUFFER
SYMBOL 36 QFN 48 QFN
TYPE DESCRIPTION
CFG_SEL2 n/a 33 I Configuration Programming Select
Note: This pin is not available in all packages; it is
held to a logic ‘0’ when not available
The logic state of this pin is internally latched on the
rising edge of RESET_N (RESET_N negation), and will
determine the hub configuration method as described in
Table 3.2, "SMBus or EEPROM Interface Behavior"
MISC
XTA L1/
33 45 ICLKx Crystal Input/External Clock Input
CLKIN
24MHz crystal or external clock input.
This pin connects to either one terminal of the crystal or
to an external 24/48MHz clock when a crystal is not
used.
Note: 48MHz only available in 48 QFN.
XTAL2 32 44 OCLKx Crystal Output
24MHz Crystal
This is the other terminal of the crystal, or pulled high
when an external clock source is used to drive
XTAL1/CLKIN. This output must not be used to drive
any external circuitry other than the crystal circuit.
RESET_N 26 34 IS RESET Input
The system can reset the chip by driving this input low.
The minimum active low pulse is 1 us.
When the RESET_N pin is pulled to VDD33, the internal
POR (Power on Reset) is enabled and no external reset
circuitry is required. The internal POR holds the internal
logic in reset until the power supplies are stable.
SMSC USB2514 13 Revision 1.98 (11-19-07)
DATASHEET
Table 3.1 USB2514 Pin Descriptions (continued)
SYMBOL 36 QFN 48 QFN
USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
BUFFER
TYPE DESCRIPTION
SUSP_IND/
LOCAL_PWR/
NON_REM0
28 39 I/O Active/Suspend status LED or Local-Power & Non
Removable Strap Option
Suspend Indicator: Indicates USB state of the hub.
‘negated’ = Unconfigured, or configured and in USB
Suspend
‘asserted’ = Hub is configured, and is active (i.e., not in
suspend)
Local Power: Detects availability of local self-power
source.
Low = Self/local power source is NOT available (i.e.,
Hub gets all power from Upstream USB VBus).
High = Self/local power source is available.
NON_REM0 Strap Option:
If this strap is enabled by package and configuration
settings (see Table 3.2), th is pin will be sampled (in
conjunction with NON_REM1) at RESET_N negation to
determine if ports [4:1] contain permanently attached
(non-removable) devices. Also, the active state of the
LED will be determined as follows:
NON_REM[1:0] = ‘00’, All ports are removable, and the
LED is active high
NON_REM[1:0] = ‘01’, Port 1 is nonremovable, and the
LED is active low
NON_REM[1:0] = ‘10’, Ports 1 & 2 are non-removable,
and the LED is active high
NON_REM[1:0] = ‘11’, Ports 1, 2 & 3 are nonremovable, and the LED is active low
TEST 11 14 IPD TEST pin
XNOR continuity tests all signal pins on the hub, please
contact your SMSC representative for a detailed
description of how this test mode is enabled and utilized.
SEL48 n/a 40 I Select 48 MHz clock input
48MHz external clock input select. When the hub is
clocked from an external clock source, this pin selects
either 24MHz or 48MHz mode.
‘0’ = 24MHz
‘1’ = 48MHz
REG_EN n/a 11 IPU Regulator Enable
REG_EN: This pin is internally pulled up to enable the
internal 1.8V regulators, and this pin should be treated
as a no-connect.
In order to disable the regulators, this pin will need to be
externally connected to ground.
When the internal regulator is enabled, the 1.8V power
pins must be left unconnected, except for the required
bypass capacitors.
Revision 1.98 (11-19-07) 14 SMSC USB2514
DATASHEET
USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
Table 3.2 SMBus or EEPROM Interface Behavior
CFG_SEL2 CFG_SEL1 CFG_SEL0 SMBUS OR EEPROM INTERFACE BEHAVIOR
36-Pin
QFN
48-Pin
QFN
36-Pin
QFN
48-Pin
QFN
36-Pin
QFN
48-Pin
QFN
36-Pin
QFN
48-Pin
QFN
48-Pin
QFN
48-Pin
QFN
N/A 0 0 Internal Default Configuration
Strap Options Enabled
00 0
Port Indi cators Not Supported
N/A 0 1 Configured as an SMBus slave for external download
of user-defined descriptors.
00 1
SMBus sla ve address 58 (0101100x)
Strap Options Disabled
All Settings Controlled by Registers
N/A 1 0 Internal Default Configuration
Strap Options Enabled
01 0
Bus Power Operatio n
LED Mode = USB
N/A 1 1 2-Wire I2C EEPROMS are supported.
Strap Options Disabled
01 1
All Settings Controlled by Registers
1 0 0 Internal Default Configuration
Strap Options Disabled
Dyn amic Power Switching Enabled
1 0 1 Internal Default Configuration
Strap Options Disabled
Dyn amic Power Switching Enabled
LED Mode = USB
48-Pin
QFN
48-Pin
QFN
1 1 0 Internal Default Configuration
Strap Options Disabled
1 1 1 Internal Default Configuration
Strap Options Disabled
LED Mode = USB
Gang ed Power Switching
Gang ed Over-Current Sensing
Notes:
Denotes 48-Pin QFN Denotes 36-Pin QFN
SMSC USB2514 15 Revision 1.98 (11-19-07)
DATASHEET
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