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gl620usb - a genelink usb pc - to - pc networking controller specification 1. 6 nov 17, 2000 genesys logic, inc. 10f, no.11, ln.3, tsao ti wei, shenkeng, taipei, taiwan tel: 886 - 2 - 2664 - 6655 fax: 886 - 2 - 2664 - 5757 http://www.genesyslogic.com your imagination, our creation
revision 1 .6 nov. 17, 2000 - 2 - gl620usb - a index 1. features ................................ ................................ ................................ ............................ 3 2. functional overview ................................ ................................ ................................ ........ 4 3. ap plications ................................ ................................ ................................ ...................... 5 4. functional description ................................ ................................ ................................ ..... 6 5. driver support ................................ ................................ ................................ .................. 8 6. pin definitions and descriptions ................................ ................................ .................... 10 7. electrical characteristics ................................ ................................ ................................ . 11 7.1 absolute maximum ratings (voltages referenced to gnd) ................................ ................................ .. 11 7.2 dc characteristics (vcp/d+/d - ) ................................ ................................ ................................ ........ 11 7.3 dc characteristics (pin1, 2) ................................ ................................ ................................ ............... 11 7.4 dc characteristics (pin10, 11) ................................ ................................ ................................ .......... 12 7.5 dc characteristics (pin14, 15) ................................ ................................ ................................ .......... 12 7.6 switching characteristics ................................ ................................ ................................ .................... 12 8. package diagram ................................ ................................ ................................ ............ 13 9. application circuit ................................ ................................ ................................ ......... 14
revision 1 .6 nov. 17, 2000 - 3 - gl620usb - a 1. features l conforms to usb 12mbps specification , versio n 1.1 l patent ed architecture l single chip solution for host - to - host communication l network driver (ndis standard) support running on windows 98 and windows 2000 l support tcp/ip, netbeui, ipx/spx protocols l up to 8.6mbps transfer rate l suitable for mobile and so ho environment l tiniest solution in the market ? 16 - pin sop l on - chip 3.3v output l 12mhz external clock l internal power - on reset l p ower management support
revision 1 .6 nov. 17, 2000 - 4 - gl620usb - a 2. functional overview the gl620usb - a provides a single - chip solution for networking two or more pcs via thei r usb ports. according to usb protocol, the pc is the host and the device is a slave, where the host initiates all the usb traffic and the slave responds to the host ? s requests. in other words, a host cannot talk to another host via usb protocol; instead, a host can only talk to one or more devices. the gl620usb - a ? s patent - pending architecture overcomes the usb inherently incompatibility of connecting two or more pcs by providing two independent usb transceivers and sies for each host, i.e., data can be tra nsferred in both directions simultaneously. system diagram GL620USB-A pc a pc b usb connection usb connection
revision 1 .6 nov. 17, 2000 - 5 - gl620usb - a 3. applications the windows network driver software comes with gl620usb - a can connect 2 or more pcs via usb ports easily . genesys logic also provides macintosh driver software for gl620usb - a and supports the direct connection between two macintosh machines. the plug - and - play nature of usb protocol makes the installation and usage of end products very simple. working with a full - featured windows driver, the gl620usb - a can perform the following fu nctions between two or more pcs : l file transfer l ethernet emulation l storage device sharing: hard drive, cd - rom, floppy, ? l printer sharing l internet sharing working with a full - featured macintosh driver, the gl620usb - a can perform the following functions bet ween two macintosh machines: l ethernet emulation l storage device sharing: hard drive, cd - rom, floppy, ? l printer sharing working with gl620usb - a and its windows/macintosh drivers, pc can provide internet sharing to macintosh. gl620usb - a doesn?t support file transfer/sharing function between pc and macintosh except that the extra third - party software is installed. the gl620usb - a networking function can be integrated with the following form factors: l usb standalone cable l usb standalone hub l usb monitor with hu b l pc host
revision 1 .6 nov. 17, 2000 - 6 - gl620usb - a 4. functional description block diagram of gl620usb - a the gl620usb - a is equipped with two full - speed usb ports, and each port has four endpoints to provide different function s as follows: endpoint 0: control transfer endpoint 1: bulk - read transf er endpoint 2: bulk - write transfer endpoint 3: interrupt transfer two 8 - bytes fifo and four 64 - bytes fifo are built in the device as follows: - left 8 - byte fifo: provide a pipe to link left endpoint 0 and right endpoint 3. for example, if left host want s to communicate with right host, left host can issue a no data control transfer and the setup command will be 64 byte fifo 64 byte fifo 8 byte fifo 8 bytes fifo usb interface usb interface micro- controller usb registers & fifo control d+ d- d+ d-
revision 1 .6 nov. 17, 2000 - 7 - gl620usb - a stored in the left 8 - byte fifo. right host can request a n interrupt transfer to get the setup command from left host. the status stage of the left side control transfer will not be terminated until the right side get the setup command via interrupt transfer. - right 8 - byte fifo: provide a pipe to link right endpoint 0 and left endpoint 3. - left 64 - bytes data0/data1 fifos: provide a pipe to link lef t endpoint 2 and right endpoint 1. for example, if left host want s to transfer data to right host, left host can issue bulk write transfer and the payload will be stored in the left 64 - byte fifos. right host can request a bulk read transfer to get the data from left host. - right 64 - bytes data0/data1 fifos: provide a pipe to link right endpoint 2 and left endpoint 1.
revision 1 .6 nov. 17, 2000 - 8 - gl620usb - a 5. driver support the genesys logic ethernet driver is a mini - port device driver emulating a network interface running on windows 98 and windows 2000. the genesys logic ethernet driver conforms to the ndis (network driver interface specification) standard. the users can use standard windows utilities such as windows explorer, network neighborhood and standard file sharing security features. even t hough there ? s no ethernet card present, the genesys logic ethernet driver performs all the functions an ethernet card can do, and more, the plug - and - play feature. the users can build up their own private network by connecting several pcs via the gl620usb - a embedded cables. the genesys logic software router is a network protocol layer driver. the software router can forward packet between the gl620usb - a embedded cable and ethernet lan to emulate all pcs on the network build by gl620usb - a is also on the ethe rnet lan. this function can share all resources on ethernet lan to gl620usb - a connected pcs. the genesys logic ethernet macintosh driver is a device driver emulating a network interface running on mac os 8.5, 8.6 and 9.0. after enable the standard macinto sh file sharing service, the users can share the device resources such as hd, cd - rom between two macintosh machines by the macintosh network browser.
revision 1 .6 nov. 17, 2000 - 9 - gl620usb - a computer a computer b computer c printer computer d ethernet lan gl620usb - a cable genesys logic software router is running on computer b ndis driver for gl620usb - a are runn ing functional equivalent computer b computer c printer computer d ethernet lan computer a
revision 1 .6 nov. 17, 2000 - 10 - gl620usb - a 6. pin definitions and descriptions pin symbol i/o description 1 gpi o1 b general purpose io pin / driving led capability 2 gpio2 b general purpose io pin / driving led capability 3 lvm b left d - 4 lvp b left d+ 5 vcp o 3.3v output 6 rvp b right d+ 7 rvm b right d - 8 agnd - ground 9 dgnd - ground 10 oscsel i sele ction of clock type 11 extrst_ i external reset 12 xtal1 i 12m crystal input 13 xtal2 o crystal output 14 gpio3 b general purpose io pin 15 gpio4 b general purpose io pin 16 vcc - 5v power 1 2 3 4 14 7 6 5 vcc oscsel xtal2 agnd rvm gpio1 extrst_ lvm 13 10 12 11 9 8 dgnd gpio2 gpio3 gpio4 lvp xtal1 rv p vcp 16 15 16 - pin sop
revision 1 .6 nov. 17, 2000 - 11 - gl620usb - a 7. electrical characteristics 7.1 absolute maximum ratings ( voltages referenced to gnd) symbol description min max vcc dc supply voltage - 0.5v +7v v i dc input voltage - 0.5v vcc+0.5v v i/o dc input voltage range for bidirect pins - 0.5v vcc+0.5v v ai/o dc input voltage for usb d+/d - pins(pin3, 4, 6, 7) - 0.5v vcc+0. 5v v i/oz dc voltage applied to outputs in high z state - 0.5v vcc+0.5v v esd static discharge voltage 4000v 7.2 dc characteristics (vcp/d+/d - ) symbol description min typ max unit v 3.3 vcp regulator output 3.0 3.3 3.6 v i 3.3 vcp maximum supply current 2 7 41 56 ma v ol d+/d - static output low(r l of 1.5k to 3.6v ) 0.3 v v oh d+/d - static output high (r l of 15k to gnd ) 2.8 3.6 v v di differential input sensitivity 0.2 v v cm differential common mode range 0.8 2.5 v v se single - ended receiver threshol d 0.2 v c in transceiver capacitance 20 pf i lo hi - z state data line leakage - 10 +10 m a z drv driver output resistance 28 43 ohms 7.3 dc characteristics (pin1, 2) symbol description min typ max unit v dd power supply voltage 4.5 5.0 5.5 v i ol dc ou tput sink current at 0.4v 13.01 19.54 24.82 ma i oh dc output source current at v dd - 0.4v 6.35 9.82 12.37 ma i ohttl dc output source current at ttl high 24.62 49.45 69.12 ma v il low level input voltage 0.7 v v ih high level input voltage 2.66 v v tlh low to high threshold voltage 2.02 2.38 2.66 v v thl high to low threshold voltage 0.7 0.83 1.0 v v hys hysteresis voltage 1.1 1.55 1.79 v v ol low level output voltage when i ol =16ma 0.4 v
revision 1 .6 nov. 17, 2000 - 12 - gl620usb - a 7.4 dc characteristics (pin10, 11) symbol description min typ max unit v dd power supply voltage 4.5 5.0 5.5 v v il low level input voltage 0.69 v v ih high level input voltage 2.65 v v tlh low to high threshold voltage 2.01 2.37 2.65 v v thl high to low threshold voltage 0.69 0.82 0.99 v v hys hysteresis voltag e 1.1 1.55 1.79 v r up pad internal pullup resister 191.27 240.69 376.34 kohms 7.5 dc characteristics (pin14, 15) symbol description min typ max unit v dd power supply voltage 4.5 5.0 5.5 v i ol dc output sink current at 0.4v 3.89 5.94 7.56 ma i oh dc out put source current at v dd - 0.4v 2.85 4.36 5.46 ma i ohttl dc output source current at ttl high 10.9 21.5 29.75 ma v il low level input voltage 0.71 v v ih high level input voltage 2.68 v v tlh low to high threshold voltage 2.03 2.39 2.68 v v thl high t o low threshold voltage 0.71 0.83 1.0 v v hys hysteresis voltage 1.1 1.55 1.8 v v ol low level output voltage when i ol =4ma 0.4 v r dn pad internal pulldown resister 122.08 160 267.31 kohms 7.6 switching characteristics symbol description min typ max uni t f x1 x1 crystal frequency 11.97 12 12.03 mhz t cyc x1 cycle time 83.3 ns t x1l x1 clock low time 0.45t cyc ns t x1h x1 clock high time 0.45t cyc ns t r30pf output pad rise time from 10% to 90% swing with 30pf loading 6 8 12 ns t f30pf output pad fall time from 10% to 90% swing with 30pf loading 5.3 7 10.4 ns t r50pf output pad rise time from 10% to 90% swing with50pf loading 9.5 13 19 ns t f50pf output pad fall time from 10% to 90% swing with 50pf loading 7.7 10 16 ns t rusb d+/d - rise time with 50pf loading 4 20 ns t fusb d+/d - fall time with 50pf loading 4 20 ns
revision 1 .6 nov. 17, 2000 - 13 - gl620usb - a 8. package diagram dimension in mils dimension in mm symbol min nom max min nom max a --- 58 --- --- 1.473 --- a1 6 --- --- 0.152 --- --- a2 --- 24 --- --- 0.610 --- b --- 16 --- --- 0 .406 --- c --- 8 --- --- 0.203 --- d 388 390 392 9.855 9.906 9.957 e1 152 154 156 3.861 3.912 3.962 e --- 50 --- --- 1.270 --- eb --- 238 --- --- 6.045 --- l 25 --- --- 0.635 --- --- q 0 3 6 0 3 6 a2 a1 b e a d c eb e1 l q
revision 1 .6 nov. 17, 2000 - 14 - gl620usb - a 9. application circuit

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