XR22414
USB 2.0 4-Port MTT Hub
General Description
The XR22414 is a USB 2.0 4-port hub using multiple transaction
translators (MTT) for highest possible bandwidth capability.
The upstream USB interface has an integrated USB 2.0 PHY and
device controller that is compliant with both Hi-Speed (480Mbps) and
Full-Speed (12Mbps) and downstream PHY supporting Hi-Speed,
Full-Speed and Low-Speed (1.5Mbps) on each of the 4 downstream
ports.
The XR22414 provides two power modes, ganged or individual power
control as well as global or individual over-current sensing modes.
The XR22414 operates from a single 5V or 3.3V power input. When
powered by 5V, internal regulators provide a 3.3V output which may
be connected to VCC33 power input pins as well as external circuitry.
In turn a second internal regulator provides a 1.8V output from the
3.3V input. This 1.8V output may be connected to VCC18 power input
pins. Individual port activity and overall hub activity indicators provide
status outputs for external LEDs.
FEATURES
■■ USB 2.0 compliant interface
■■ Multiple transaction translators (MTT)
■■ Regulated +3.3V Output Power
■■ Individual port and hub activity LED
indicators
■■ Individual or ganged port power enables
■■ Individual or global overcurrent sensing
■■ Single 5V or 3.3V power supply
■■ Single 12MHz Crystal
■■ 48-pin TQFN and LQFP package options
APPLICATIONS
■■ USB port expansion
■■ POS Terminals
■■ Test Instrumentation
■■ Factory Automation and Process Controls
■■ Industrial Applications
Ordering Information - Back Page
Block Diagram
USB Host
Upstream Phy
XR22414
Hub Controller
Port Routing Switch
TT #1
TT #2
TT #3
TT #4
Downstream
Phy #1
Downstream
Phy #2
Downstream
Phy #3
Downstream
Phy #4
Device #1
Device #2
Device #3
Device #4
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XR22414
Absolute Maximum Ratings
Operating Conditions
Stresses beyond the limits listed below may cause
permanent damage to the device. Exposure to any Absolute
Maximum Rating condition may affect device reliability and
lifetime.
Operating temperature range............................ 0°C to 70°C
VCC5 supply voltage..........................................4.4V to 5.5V
VCC33 supply voltage.........................................3.0V to 3.6V
VCC 5V supply voltage........................................ -0.5V to 6V
VCC 3.3V supply voltage..................................... -0.5V to 4V
VCC 1.8V supply voltage.................................. -0.5V to 2.5V
Input voltage
(all pins except USBD+, USBD–).................... -0.3V to 5.5V
Input voltage (USBD+ and USBD–).............. -0.3V to 5.75V
Junction temperature.................................................. 125°C
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XR22414
Electrical Characteristics
Unless otherwise noted: TA = 0°C to 70°C; VCC5 = 4.4V to 5.25V or VCC33 = 3.0V to 3.6V.
Conditions
Symbol
Upstream
Port Speed
Typ
Max
Units
Suspend
0.5
2.5
mA
None
39
mA
1x Full Speed
45
mA
1x High Speed
54
mA
2x Full Speed
49
mA
1x Full Speed, 1x High Speed
59
mA
2x High Speed
67
mA
4x Full Speed
54
mA
4x High Speed
91
mA
Number of Active
Downstream Ports
Downstream Ports
Device Speed
Min
Power Consumption DC Supply Current (VCC = VCC5)
1
High Speed
2
ICC
4
Full Speed
Suspend
0.5
2.5
mA
None
27
mA
1
1x Full Speed
32
mA
4
4x Full Speed
42
mA
Power Consumption DC Supply Current (VCC = VCC33)
Suspend
0.4
None
39
mA
1x Full Speed
46
mA
1x High Speed
54
mA
2x Full Speed
49
mA
1x Full Speed, 1x High Speed
58
mA
2x High Speed
66
mA
4x Full Speed
53
mA
4x High Speed
90
mA
1
High Speed
2
ICC
4
Full Speed
2.5
2.5
mA
Suspend
0.4
mA
None
26
mA
1
1x Full Speed
32
mA
4
4x Full Speed
42
mA
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XR22414
Electrical Characteristics (Continued)
Unless otherwise noted: TA = 0°C to 70°C; VCC5 = 4.4V to 5.25V or VCC33 = 3.0V to 3.6V.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Non-USB I/O Pins
VIL
Input low voltage
-0.3
0.8
V
VIH
Input high voltage
2.0
5.5
V
VOL
Output low voltage
IOL = 4mA
0.4
V
VOH
Output high voltage
IOL = -4mA
IIL
Input low leakage current
±10
μA
IIH
Input high leakage current
±10
μA
CIN
Input pin capacitance
5
pF
3.6
V
2.4
V
USB I/O Pins(1)
3.3V Regulated Power Output
3V3_OUT
Output voltage
Max load current 100mA
3.0
3.3
NOTE:
1. See USB 2.0 Specification for USB I/O pins DC Electrical Characteristics.
Top View, TQFN48
OVC1#
PWR1#
LED4
LED3
LED2
LED1
LED_CTL
VCC33
TEST
3V3_OUT
VCC5
REG_EN#
47
46
45
44
43
42
41
40
39
38
37
30
UP_DM
PWR4#
8
29
VCC18
VCC18
9
28
REXT
GND
10
27
VCC33
XTALOUT
11
26
1V8_OUT
XTALIN
12
25
GND
23
24
DP1
LQFP48
DM1
25
24
23
22
21
20
19
18
17
16
15
14
13
12
7
22
26
CPAD
UP_DP
OVC4#
GND
11
31
XR22414
21
27
6
DP2
10
VCC33
GND
20
28
32
DM2
9
5
19
29
GND
OVC3#
VCC33
8
33
18
30
4
DP3
TQFN48
7
EXT_RST#
PWR3#
17
31
34
DM3
XR22414
6
3
16
32
VBUS_SENSE
VCC18
GND
5
BUS_PWR#
35
15
33
36
2
DP4
4
1
14
34
OVC2#
PWR2#
13
3
BUS_PWR#
VBUS_SENSE
EXT_RST#
GND
VCC33
UP_DP
UP_DM
VCC18
REXT
VCC33
1V8_OUT
GND
DM4
35
VCC33
36
2
48
37
38
39
40
42
41
43
45
44
46
1
VCC33
DM4
DP4
GND
DM3
DP3
VCC33
DM2
DP2
GND
DM1
DP1
OVC2#
PWR2#
VCC18
PWR3#
OVC3#
GND
OVC4#
PWR4#
VCC18
GND
XTALOUT
XTALIN
47
48
OVC1#
PWR1#
LED4
LED3
LED2
LED1
LED_CTL
VCC33
TEST
3V3_OUT
VCC5
REG_EN#
Pin Configuration
Top View, LQFP48
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XR22414
Pin Functions
Pin Number
Pin Name
Type
Description
1
OVC2#
I
Downstream port 2 over current indicator, active low. If global over-current protection is selected by
connecting PWR4# to ground, this pin is unused and should be tied to ground.
2
PWR2#
O
Power enable for port 2 downstream device. Asserted if OVC2# input is asserted in individual power
mode or XR22414 is not configured. Unused when ganged power control mode is selected by
connecting PWR4# to ground.
3
VCC18
PWR
4
PWR3#
O
Power enable for port 3 downstream device. Asserted if OVC3# input is asserted in individual power
mode or XR22414 is not configured. Unused when ganged power control mode is selected by
connecting PWR4# to ground.
5
OVC3#
I
Downstream port 3 over current indicator, active low. If global over-current protection is selected by
connecting PWR4# to ground, this pin is unused and should be tied to ground.
6
GND
7
OVC4#
I
8
PWR4#
I/O
9
VCC18
PWR
1.8V power input
10
GND
PWR
Ground
11
XTALOUT
O
12MHz crystal feedback output
12
XTALIN
I
12MHz ±50 ppm crystal input with load capacitance rating of 16-20pF. An external 3.3V clock may be
used instead on XTALIN, leaving XTALOUT unconnected.
13
VCC33
PWR
14
DM4
I/O
Downstream port 4 USB D- data
15
DP4
I/O
Downstream port 4 USB D+ data
16
GND
PWR
17
DM3
I/O
Downstream port 3 USB D- data
18
DP3
I/O
Downstream port 3 USB D+ data
19
VCC33
PWR
20
DM2
I/O
Downstream port 2 USB D- data
21
DP2
I/O
Downstream port 2 USB D+ data
22
GND
PWR
23
DM1
I/O
Downstream port 1 USB D- data
24
DP1
I/O
Downstream port 1 USB D+ data
25
GND
PWR
Ground
26
1V8_OUT
PWR
1.8V power output from internal 3.3V to 1.8V regulator, may be used to power VCC18 power inputs.
Must be decoupled with minimum of 10uF
27
VCC33
PWR
3.3V power input
28
REXT
I
29
VCC18
PWR
30
UP_DM
I/O
Upstream port USB D- data
31
UP_DP
I/O
Upstream port USB D+ data
1.8V power input
Ground
Downstream port 4 over current indicator, active low. If global over-current protection is selected by
connecting PWR4# to ground, this pin is unused and should be tied to ground.
Power enable for port 4 downstream device. Asserted if OVC4# input is asserted in individual power
mode or XR22414 is not configured. If connected to ground, enables Ganged Power Control Mode and
Global Over-Current Protection mode.
3.3V power input
Ground
3.3V power input
Ground
External bias resistor. Connect 2.7kOhm 1% resistor from this pin to GND
1.8V power input
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XR22414
Pin Number
Pin Name
Type
Description
32
VCC33
PWR
3.3V power input
33
GND
PWR
Ground
34
EXT_RST#
I
External reset input, active low. Must be asserted for a minimum of 10uS.
35
VBUS_SENSE
I
Connect to VBUS from USB host. In self-powered mode, indicates presence of host VBUS power.
36
BUS_PWR#
I
Bus power indicator, active low. For bus powered mode, connect to ground. For self powered mode,
connect to logic ‘1’.
37
REG_EN#
I
Active low enable of internal 5V to 3.3V regulator. Connect to logic ‘1’ when XR22414 is powered by
3.3V.
38
VCC5
PWR
5V power to internal 5V to 3.3V regulator. When XR22414 is powered by 3.3V, VCC5 should not be
connected to 5V, and REG_EN# should be tied to logic ‘1’.
39
3V3_OUT
PWR
3.3V power output from internal 5V to 3.3V regulator, may be used to power VCC33 power inputs if
enabled by REG_EN# pin. Must be decoupled with minimum of 10 uF. Leave unconnected if XR22414
is powered by external 3.3V.
40
TEST
I
41
VCC33
PWR
42
LED_CTL
I/O
LED hub active indicator. May also be used in conjunction with port status LEDs. Refer to Figure 4.
43
LED1
I/O
Port 1 LED Indicator. Max source current 3mA. May be used in conjunction with LED_CTL pin. Refer to
Figure 4. Connecting LED1 to ground marks downstream port 1 as non-removable device.
44
LED2
I/O
Port 2 LED Indicator. Max source current 3mA. May be used in conjunction with LED_CTL pin. Refer to
Figure 4. Connecting LED2 to ground marks downstream port 2 as non-removable device.
45
LED3
I/O
Port 3 LED Indicator. Max source current 3mA. May be used in conjunction with LED_CTL pin. Refer to
Figure 4. Connecting LED3 to ground marks downstream port 3 as non-removable device.
46
LED4
I/O
Port 4 LED Indicator. Max source current 3mA. May be used in conjunction with LED_CTL pin. Refer to
Figure 4. Connecting LED4 to ground marks downstream port 4 as non-removable device.
47
PWR1#
O
Power enable for port 1 downstream device in individual power mode. Asserted if OVC1# input is
asserted in individual or global power mode or XR22414 is not configured. Used as global power control
pin if ganged power control mode is selected by connecting PWR4# to ground.
48
OVC1#
I
Downstream port 1 over current indicator in individual current-sensing mode, active low. If PWR4# is
tied to ground, this pin is a global over-current sense input.
49
CPad
PWR
Test mode enable. Tie to ground for normal device operation.
3.3V power input
Connect TQFN package center pad to PCB ground plane with thermal vias.
NOTE:
Type: I = Input, O = Output, I/O = Input/Output, PWR = Power, OD = Open-Drain.
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XR22414
Functional Block Diagram
USB Host
XR22414
Upstream Phy
Upstream Port Controller
Port
Indicators
LED
Controller
12
MHz
Oscillator
PLL (x40)
Overcurrent
Detection
Hub
Controller
5V to 3.3V
Regulator
Hub
Activity
Indicator
3.3V to 1.8V
Regulator
480
MHz
Power
Control
Downstream Port Controller
Port Routing Switch
TT #1
TT #2
TT #3
TT #4
Downstream
Phy #1
Downstream
Phy #2
Downstream
Phy #3
Downstream
Phy #4
Device #1
Device #2
Device #3
Device #4
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XR22414
Applications Information
Functional Description
The XR22414 hub has a multiple transaction translator architecture that provides one transaction translator (TT) for each
of the downstream USB ports. The transaction translators allow the USB 2.0 hub to take incoming high speed packets from
the USB host on the upstream port and translate these commands, if necessary to full or low speed devices on any of the
4 downstream ports. The MTT architecture allows for higher bandwidth as the 4 individual ports are not constrained by a
shared resource.
USB Interface
The hub function of the XR22414 supports one configuration and utilizes the following USB endpoints:
■■ Control
■■ Status
endpoint
change endpoint
The XR22414 hub may be configured for bus powered mode with a maximum power of 500mA or self-powered mode by
connecting the BUS_PWR# pin to the appropriate logic state. In bus powered mode, downstream ports are limited to low
power (100mA or less). When self-powered, downstream devices can draw up to 500mA on each of the four ports.
USB Vendor ID
Exar’s USB vendor ID is 0x04E2.
USB Product ID
Exar’s USB hub product ID is 0x0414.
Device Reset
The XR22414 has both an automatic power-up reset and an external hardware pin reset. Strapping option for ganged power
enables and global over-current sensing are selected by tying the PWR4# pin to logic ‘0’. This pin is sampled at device reset
and the resulting option selected is set.
USB Suspend
All USB peripheral devices must support the USB suspend mode in bus powered mode. Per USB standard, the XR22414
device will begin to enter the suspend state if it does not detect any activity, (including Start of Frame or SOF packets) on
its USB data lines for 3ms. The peripheral device must then reduce power consumption from VBUS power within the next 7
ms to the allowed limit of 2.5mA for the suspended state. Note that in this context, the “device” is all circuitry (including the
XR22414) that draws power from the host VBUS. Each attached downstream port is also allowed an additional 2.5mA of
suspend current. If no devices are connected to the XR22414 downstream ports, the USB host will suspend the hub.
Individual vs. Ganged Power Control and Global Over-current protection mode
Ganged power control mode is enabled when PWR4# is tied to ground. In this mode only the PWR1# output pin is used
for power control and the remaining PWR# pins are unused and should be left unconnected. Global over-current protection
mode is also enabled when PWR4# is tied to ground. In this mode only OVC1# input pin is used for current sensing and
the remaining OVC# pins should be connected to ground. Figure 1 depicts ganged power control / global over-current
protection. Figure 2 depicts individual mode power and over-current modes for ports 1 and 2 (repeat for ports 3 and 4).
Polymeric PTC
5V
2A
OVC1#
OVC2#
OVC3#
OVC4#
XR22414
PWR1#
PWR2#
PWR3#
PWR4#
To VBUS
input of all
downstream
devices
Figure 1: Ganged Power Control and Global Over-Current Protection Mode
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XR22414
3.3V
5V
ENA
FLGA
FLGB
ENB
RSETA
OVC1#
OVC2#
OVC3#
OVC4#
OUTA
IN
XRP2528 GND
OUTB
RSETB
To VBUS of
Port 1
To VBUS of
Port 2
Duplicate for
Port 3 and 4
XR22414
PWR1#
PWR2#
PWR3#
PWR4#
Figure 2: Individual Power Control and Over-Current Protection Mode
USB Hub Drivers
All Operating Systems provide a native USB hub device driver for the XR22414 device to operate. No other device drivers
are necessary for the XR22414.
Regulated 3.3V Power Output
The XR22414 internal voltage regulator provides 3.3VDC output power when the device is powered by 5V input. The 3.3V
output can be utilized by other circuitry. Refer to Electrical Characteristics on page 3 for maximum power capability.
Downstream Port LED Indicators
Four port indicator (LED1 - LED4) pins, provide status of connection of downstream devices. Ports with permanently
connected devices should ground their respective port LED indicator. Ports using LED indicators may configure status LEDs
in a number of configurations in conjunction with the LED_CTL pin. Figure 3 and Figure 4 show alternate configurations for
LED status indicators. Green / amber LEDs in Figure 4 are implemented per USB hub specification USB 2.0 spec, chapter
11.
LED1
Port 1 device is
non-removable
LED2
XR22414
LED3
Port 2-4 devices are
removable but port LED
status is disabled
LED4
LED_CTL
Port status LED
indicators disabled
Figure 3: Port status LED indicators disabled
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XR22414
LED1
Port 1 enabled but does not use port status indicator
Green
LED2
XR22414
470
Amber
LED3
Green
LED4
470
Port 2 and 4 devices
are removable
with Green/Amber
LED indicators
per USB hub
specification
Amber
LED_CTL
470
Hub active indicator (optional)
Green
Figure 4: Port status LED indicators enabled dual LED mode
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XR22414
Mechanical Dimensions
TQFN-48
TOP VIEW
SIDE VIEW 1
SIDE VIEW 2
TERMINAL DETAILS
Drawing No.: POD-00000101
Revision: C
REV1B
11/14
XR22414
Recommended Land Pattern and Stencil
TQFN-48
TYPICAL RECOMMENDED LAND PATTERN
TYPICAL RECOMMENDED STENCIL
Drawing No.: POD-00000101
Revision: C
REV1B
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XR22414
Mechanical Dimensions
LQFP-48
TOP VIEW
DETAIL A
SIDE VIEW
TERMINAL DIMENSION
TYPICAL RECOMMENDED LAND PATTERN
- Control dimensions are in Millimeters
- Jedec MS 026
Drawing No. : POD - 00000096
Revision: A
REV1B
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XR22414
Ordering Information(1)
Part Number
Operating Temperature Range
XR22414CL48TR-F
0°C to +70°C
XR22414CV48TR-F
0°C to +70°C
Lead-Free
Yes(2)
Package
Packaging Method
48-pin TQFN
Reel
48-pin LQFP
Reel
XR22414CL48EVB
XR22414 48-pin TQFN Evaluation Board
XR22414CV48EVB
XR22414 48-pin LQFP Evaluation Board
NOTE:
1. Refer to www.exar.com/XR22414 for most up-to-date Ordering Information.
2. Visit www.exar.com for additional information on Environmental Rating.
Revision History
Revision
Date
1A
February 2017
1B
August 2018
Corporate Headquarters:
5966 La Place Court
Suite 100
Carlsbad, CA 92008
Tel.:+1 (760) 692-0711
Fax: +1 (760) 444-8598
www.maxlinear.com
Description
Initial Release
Update to MaxLinear logo. Update format. Change QFN package name to TQFN. Changed
DRV pin to LED_CTL. Input voltage absolute max changed to 5.5V. Updated Figure 2.
High Performance Analog:
1060 Rincon Circle
San Jose, CA 95131
Tel.: +1 (669) 265-6100
Fax: +1 (669) 265-6101
www.exar.com
The content of this document is furnished for informational use only, is subject to change without notice, and should not be construed as a commitment by MaxLinear, Inc.. MaxLinear, Inc. assumes
no responsibility or liability for any errors or inaccuracies that may appear in the informational content contained in this guide. Complying with all applicable copyright laws is the responsibility of the
user. Without limiting the rights under copyright, no part of this document may be reproduced into, stored in, or introduced into a retrieval system, or transmitted in any form or by any means (electronic,
mechanical, photocopying, recording, or otherwise), or for any purpose, without the express written permission of MaxLinear, Inc.
Maxlinear, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support
system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless MaxLinear, Inc. receives, in writing, assurances to its satisfaction that: (a) the
risk of injury or damage has been minimized; (b) the user assumes all such risks; (c) potential liability of MaxLinear, Inc. is adequately protected under the circumstances.
MaxLinear, Inc. may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this document. Except as expressly provided in any written
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Company and product names may be registered trademarks or trademarks of the respective owners with which they are associated.
© 2016 - 2018 MaxLinear, Inc. All rights reserved
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