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1/13 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 qfn and lqfp package options applications usb port expansion pos terminals test instrumentation factory automation and process controls industrial applications 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. block diagram ordering information - back page xr22414 usb host device #1 device #2 device #3 device #4 upstream phy hub controller downstream phy #1 downstream phy #2 downstream phy #3 downstream phy #4 tt #1 port routing switch tt #2 tt #3 tt #4 usb 2.0 4-port mtt hub xr 22414 rev1a
2/13 absolute maximum ratings 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. v cc 5v supply voltage ....................................... -0.5v to 6v v cc 3.3v supply voltage .................................... -0.5v to 4v v cc 1.8v supply voltage ................................. -0.5v to 2.5v input voltage (all pins except usbd+, usbdC) ................... -0.3v to 4.0v input voltage (usbd+ and usbdC) ............. -0.3v to 5.75v junction temperature ................................................. 125c operating conditions operating temperature range ........................... 0c to 70c v cc5 supply voltage ......................................... 4.4v to 5.5v v cc33 supply voltage ........................................ 3.0v to 3.6v xr 22414 rev1a
3/13 electrical characteristics unless otherwise noted: t a = 0c to 70c; vcc5 = 4.4v to 5.25v or vcc33 = 3.0v to 3.6v. symbol conditions min typ max units upstream port speed number of active downstream ports downstream ports device speed power consumption dc supply current (v cc = v cc5 ) i cc high speed suspend 0.5 2.5 ma none 39 ma 1 1x full speed 45 ma 1x high speed 54 ma 2 2x full speed 49 ma 1x full speed, 1x high speed 59 ma 2x high speed 67 ma 4 4x full speed 54 ma 4x high speed 91 ma 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 (v cc = v cc33 ) i cc high speed suspend 0.4 2.5 ma none 39 ma 1 1x full speed 46 ma 1x high speed 54 ma 2 2x full speed 49 ma 1x full speed, 1x high speed 58 ma 2x high speed 66 ma 4 4x full speed 53 ma 4x high speed 90 ma full speed suspend 0.4 2.5 ma none 26 ma 1 1x full speed 32 ma 4 4x full speed 42 ma xr 22414 rev1a
4/13 top view, qfn48 electrical characteristics (continued) unless otherwise noted: t a = 0c to 70c; v cc5 = 4.4v to 5.25v or v cc33 = 3.0v to 3.6v. symbol parameter conditions min typ max units non-usb i/o pins v il input low voltage -0.3 0.8 v v ih input high voltage 2.0 5.5 v v ol output low voltage i ol = 4ma 0.4 v v oh output high voltage i ol = -4ma 2.4 v i il input low leakage current 10 a i ih input high leakage current 10 a c in input pin capacitance 5 pf usb i/o pins (1) 3.3v regulated power output 3v3_out output voltage max load current 100ma 3.0 3.3 3.6 v note: 1. see usb 2.0 specification for usb i/o pins dc electrical characteristics. pin configuration top view, lqfp48 13 14 15 16 17 18 19 20 21 22 23 24 36 35 34 33 32 31 30 29 28 27 26 25 48 47 46 45 44 43 42 41 40 39 38 37 1 2 3 4 5 6 7 8 9 10 11 12 ovc2# pwr2# vcc18 pwr3# ovc3# gnd ovc4# pwr4# vcc18 gnd xtalout xtalin bus_pwr# vbus_sense ext_rst# gnd vcc33 up_dp up_dm vcc18 rext vcc33 1v8_out gnd ovc1# pwr1# led4 led3 led2 led1 led_ctl vcc33 test 3v3_out vcc5 reg_en# vcc33 dm4 dp4 gnd dm3 dp3 vcc33 dm2 dp2 gnd dm1 dp1 xr22414 lqfp48 24 23 22 21 20 19 18 17 16 15 14 13 37 38 39 40 41 42 43 44 45 46 47 48 12 11 10 9 8 7 6 5 4 3 2 1 25 26 27 28 29 30 31 32 33 34 35 36 ovc2# pwr2# vcc18 pwr3# ovc3# gnd ovc4# pwr4# vcc18 gnd xtalout xtalin bus_pwr# vbus_sense ext_rst# gnd vcc33 up_dp up_dm vcc18 rext vcc33 1v8_out gnd vcc5 reg_en# ovc1# pwr1# led4 led3 led2 led1 led_ctl vcc33 test 3v3_out vcc33 dm4 dp4 gnd dm3 dp3 vcc33 dm2 dp2 gnd dm1 dp1 cpad xr22414 qfn48 xr 22414 rev1a
5/13 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 1.8v power input 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 ground 7 ovc4# i 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. 8 pwr4# i/o 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. 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 on xtalin leaving xtalout unconnected. 13 vcc33 pwr 3.3v power input 14 dm4 i/o downstream port 4 usb d- data 15 dp4 i/o downstream port 4 usb d+ data 16 gnd pwr ground 17 dm3 i/o downstream port 3 usb d- data 18 dp3 i/o downstream port 3 usb d+ data 19 vcc33 pwr 3.3v power input 20 dm2 i/o downstream port 2 usb d- data 21 dp2 i/o downstream port 2 usb d+ data 22 gnd pwr ground 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 external bias resistor. connect 2.7kohm 1% resistor from this pin to gnd 29 vcc18 pwr 1.8v power input 30 up_dm i/o upstream port usb d- data 31 up_dp i/o upstream port usb d+ data xr 22414 rev1a
6/13 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 test mode enable. tie to ground for normal device operation 41 vcc33 pwr 3.3v power input 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 drv 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 drv 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 drv 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 drv 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 connect qfn 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. xr 22414 rev1a
7/13 functional block diagram xr2241 4 usb host downstream phy #1 device #1 device #2 device #3 device #4 downstream phy #2 downstream phy #3 downstream phy #4 tt #1 port routing switch downstream port controller upstream phy upstream port controller hub controller overcurrent detection power control 3.3v to 1.8v regulator hub activity indicator led controller oscillator pll (x40) port indicators 12 mhz 480 mhz 5v to 3.3v regulator tt #2 tt #3 tt #4 xr 22414 rev1a
8/13 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 endpoint status 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 exars usb vendor id is 0x04e2. usb product id exars 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). figure 1: ganged power control and global over-current protection mode ovc1# ovc2# ovc3# ovc4# pwr1# pwr2# pwr3# pwr4# xr22414 5v 2a to vbus input of all downstream devices polymeric ptc xr 22414 rev1a
9/13 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 drv 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. figure 2: individual power control and over-current protection mode figure 3: port status led indicators disabled ena flga flgb enb rseta outa in gnd outb rsetb xrp2528 ovc1# ovc2# ovc3# ovc4# pwr1# pwr2# pwr3# pwr4# xr22414 3.3v 5v to vbus of port 1 to vbus of port 2 duplicate for port 3 and 4 led1 led2 led3 led4 drv xr22414 port 1 device is non-removable port 2-4 devices are removable but port led status is disabled port status led indicators disabled xr 22414 rev1a
10/13 figure 4: port status led indicators enabled dual led mode led1 led2 led3 led4 drv xr22414 green amber 470 green amber 470 port 2 and 4 devices are removable with green/amber led indicators per usb hub speci?cation 470 green hub active indicator (optional) port 1 enabled but does not use port status indicator xr 22414 rev1a
11/13 mechanical dimensions qfn-48 revision: b drawing no.: pod-00000101 top view bottom view terminal details typical recommended land pattern side view 1. all dimensions are in millimeters 2. dimensions and tolerance per jedec mo-220 xr 22414 rev1a
12/13 mechanical dimensions lqfp-48 - control dimensions are in millimeters - jedec ms 026 drawing no. : pod - 00000096 revision: a side view top view typical recommended land pattern terminal dimension detail a xr 22414 rev1a
www.exar.com tel.: +1 (510) 668-7000 fax: +1 (510) 668-7001 email: uarttechsupport@exar.com 13/13 ordering information (1) part number operating temperature range lead-free package packaging method xr22414cl48tr-f 0c to +70c yes (2) 48-pin qfn reel xr22414cv48tr-f 0c to +70c 48-pin lqfp reel xr22414cl48evb xr22414 48-pin qfn 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 description 1a february 2017 initial release xr 22414 exar corporation reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. exar corporation conveys no license under any patent or other right and makes no representation that the circuits are free of patent infringement. while the information in this publication has been carefully checked, no responsibility, however, is assumed for inaccuracies. exar corporation 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 exar corporation 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 exar corporation is adequately protected under the circumstances. reproduction, in part or whole, without the prior written consent of exar corporation is prohibited. exar, xr and the xr logo are registered trademarks of exar corporation. all other trademarks are the property of their respective owners. ?2016-2017 exar corporation 48720 kato road fremont, ca 94538 usa xr22414_ds_xxxx17 rev1a

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