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future technology devices international ltd (ftdi) unit 1, 2 seaward place, cen turion business park, glasgow, g41 1hh, united kingdom tel.: +44 (0) 141 429 2777 fax: + 44 (0) 141 429 2758 e - mail (support): support1@ftdichip.com web: http://www.ftdichip.com neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or re produced in any material or electronic form without the prior written consent of the copyright holder. this product and its documentation are supplied on an as - is basis and no warranty as to their suitability for any particular purpose is either made or implied. future technology devices international ltd will not accept any claim for damages howsoever arising as a result of use or failure of this product. your statutory rights are not affected. this product or any variant of it is not intended for use in any medical appliance, device or system in which the failure of the product might reasonably be expected to result in personal injury. this document provides preliminary information that may be subject to change without notice. no freedom to use patents or other intellectual property rights is implied by the publication of this document . future technology devices international ltd, unit1, 2 seaward place, centurion business park, glasgow, g41 1hh, united kingdom. scotland registered number: sc136640 copyright ? 2010 future technology devices international limited future technology devices international ltd usb - com 42 2 - plus1 datas heet document reference no.: ft_0001 31 version 1. 1 issue date: 2010 - 04 - 12
copyright ? 2010 future technology devices international limited 1 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 1 introduction 1.1 functional description the usb - com - plus module s are a family of communication devices. this model, usb - com 422 - plus1, provides a simple method of adapting legacy serial devices with rs 42 2 interfaces to modern usb ports. this is accomplished by incorporating the industry standard ftdi ft232r usb - serial bridge chip. the integrated electronics of the usb - com 42 2 - plus1 utilise the ftdi ft232r and include s rs 42 2 level shifters plus txd/rxd leds to provide a visual indication of data traffic through the module . figure 1 . 1 usb - com 42 2 - plus1 the module uses a standard usb - b device connector for connection to an upstr eam host or hub port. rs 42 2 - level signals, including modem handshake signals, are available on an industry - standard de - 9p connector. the maximum rs 42 2 - level data rate is 3 mbps. the usb - com 42 2 - plus1 module requires usb device drivers, available free from www.ftdichip.com , which are used to make the usb - com 42 2 - plus1 appear as a virtual com port (vcp). this allows existing serial communications software, such as hyperterminal, to exchange data through the usb - com 42 2 - pl us1 to a legacy rs 42 2 peripheral device.
copyright ? 2010 future technology devices international limited 2 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 1.2 led description the usb - com 42 2 - plus1 uses three leds to indicate a valid link as well as data traffic according to the following table: led color function description yellow enumerated on when usb - com422 - plus1 i s configured and ready green txd activity flashes when data is transmitted from the usb - com 42 2 - plus1 to the attached rs 42 2 device red rxd activity flashes when data is transmitted from the attached rs 42 2 device to the usb - com 42 2 - plus1 table 1 . 1 led description 1.3 block diagram figure 1 . 2 usb - com 42 2 - plus1 block diagram 1.3.1 block description usb b client connector this connector provides t he interface for connection to a usb host or hub port. the maximum cable length is 5 meters, according to the usb 2.0 specification. ftdi ft232r the ftdi ft232r provides the usb - to - serial conversion. operating system device drivers are required in order to work with the ft232r to provide the virtual com port serial functionality. rs 42 2 level shifter the rs 42 2 level shifter converts the signals provided by the ft232r into the voltage levels required by rs 42 2 devices. de - 9p connector (male) the de - 9p conn ector is configured in an industry standard (tia/eia - 574) pin - out to provide connection to rs 42 2 peripherals through standard cables. see section 3.1.2 f t d i f t 2 3 2 r u s b s e r i a l b r i d g e r s 4 2 2 l e v e l s h i f t e r u s b b c l i e n t c o n n e c t o r d e - 9 p c o n n e c t o r
copyright ? 2010 future technology devices international limited 3 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 1.4 features adds one rs - 42 2 serial port by connecting to usb easy plug & play installation and rs - 42 2 device connection works with usb 1.1 & 2.0 host and hub ports industry standard ftdi chip set & device drivers for maximum compatibility microsoft windows ? whql - certified, mac os x, linux and windows ce device drivers install s as a standard windows com port com port number can be changed to any available com port number, to support hyperterminal, or any other serial communications software application running in windows supports windows server 2008, 2003, vista, xp 2000 fifo : 128 byte transmit buffer, 256 byte receive buffer rs - 42 2 data signals: txd + , txd - , rxd + , rxd - , rts + , rts - , cts + , cts - , gnd powered by usb port. no external power adapter required. serial port speed up to 3 mbps serial communication parameters o parity : none, even, odd o data bits: 7, 8 o flow control: rts/cts , x - on/x - off, none one de - 9p male connector leds indicate usb enumeration, rxd, txd for monitoring port status & easy diagnostics operating temperature of - 40c to +85c 1.5 performance figures par ameter performance usb interface 12mbps usb 2.0 full - speed rs 42 2 interface standard baud rates (300bps to 921.6kbps) custom baud rates (300bps to 3 mbps) through baud rate aliasing. see ftdi application note: configuring ft232r, ft2232 and ft232bm baud rates m ax c able l ength us b =5m, rs422=12m table 1 . 2 performance figures part number description usb - com 42 2 - plus1 usb - com - plus full - speed usb to 1 - port rs 42 2 module table 1 . 3 ordering information
copyright ? 2010 future technology devices international limited 4 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 1 introduction ................................ ................................ ................... 1 1.1 functional description ................................ ................................ .................. 1 1.2 led description ................................ ................................ ............................. 2 1.3 block diagram ................................ ................................ ............................... 2 1.3.1 block description ................................ ................................ ....................... 2 1.4 features ................................ ................................ ................................ ........ 3 1.5 performance figures ................................ ................................ ..................... 3 2 installation ................................ ................................ ..................... 6 2.1 example applications and configurations ................................ ..................... 6 2.1.1 wiring ................................ ................................ ................................ ...... 6 2.2 device driver installation ................................ ................................ ............. 6 2.2.1 microsoft windows ................................ ................................ ..................... 6 2.2.2 mac os x, linux, windows ce ................................ ................................ ... 10 3 connections ................................ ................................ .................. 11 3.1 external connectors ................................ ................................ .................... 11 3.1.1 usb ................................ ................................ ................................ ....... 11 3.1.2 rs 42 2 ................................ ................................ ................................ .... 11 4 electrical details ................................ ................................ ........... 12 4.1 usb ................................ ................................ ................................ ............. 12 4.2 rs 42 2 ................................ ................................ ................................ ......... 12 5 mechanical details ................................ ................................ ........ 13 5.1 module mechanical dimensions ................................ ................................ ... 13 6 physical environment details ................................ ....................... 14 6.1 storage ................................ ................................ ................................ ....... 14 6.2 operating ................................ ................................ ................................ .... 14 7 environmental approvals & declarations ................................ ...... 15 7.1 emi compatibility ................................ ................................ ........................ 15 7.2 safety ................................ ................................ ................................ .......... 15 7.3 environmental ................................ ................................ ............................. 15 7.4 reliability ................................ ................................ ................................ .... 15 7.4.1 mttf ................................ ................................ ................................ ..... 15 7.5 import / export information ................................ ................................ ....... 15 8 troubleshooting ................................ ................................ ........... 17 8.1 hardware ................................ ................................ ................................ .... 17 8.2 device driver ................................ ................................ .............................. 17 8.3 technical support ................................ ................................ ....................... 18 9 contact informati on ................................ ................................ ..... 19
copyright ? 2010 future technology devices international limited 5 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 appendix a - list of figures and tables ................................ .............. 21 appendix b - revision history ................................ ............................ 22
copyright ? 2010 future technology devices international limited 6 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 2 installation 2.1 e xample applications and configurations 2.1.1 wiring insert the a - plug into an available usb host or hub port. insert the b - plug into the b - receptacle on the usb - com 42 2 - plus1. the usb - com 42 2 - plus1 follows eia - 422 standard as a data terminal equipment (dte) devic e. if the rs 42 2 equipment being connected is a data communication equipment (dce) device, its typical that a straight - through cable can be used. dte pin number signal name e xpected c onnect signal 1 txd - = transmit data , negative polarity rxd - 2 txd + = transmit data , positive polarity rxd+ 3 rxd + = receive data , positive polarity txd+ 4 rxd - = receive data , negative polarity txd - 5 gnd = signal ground gnd 6 rts - = request to send , negative polarity cts - 7 rts + = request to send , positive polarit y cts+ 8 cts + = clear to send , positive polarity rts+ 9 cts - = clear to send , negative polarity rts - table 2 . 1 rs 42 2 dte to dce connection with straight - through cable some serial devices may require certain handshake signals be connected. refer to your device manual for cabling details. 2.2 device driver installation the usb - com 42 2 - plus1 module drivers are available for download from: www.ftdichip.com 2.2.1 microsoft windows with the device drivers being windows ha rdware quality labs (whql) certified, they are also available through download directly from the microsoft ? windows ? update service. this is the best choice when
copyright ? 2010 future technology devices international limited 7 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 connecting the usb - com 42 2 - plus1 to a computer running windows vista. additional i nstallation options are noted below: installation executable shown on windows xp 1) login to your system as administrator, or a user with administrator rights. 2) prior to connecting the usb - com 42 2 - plus1 to the usb host or hub port, download the latest device driver versio n from the ftdichip web site. 3) run this executable to install the device drivers. 4) connect the usb - com 42 2 - plus1 to your computer. a notification will appear near the task bar indicating that new hardware has been installed and is ready for use. it is norma l if this notice appears twice. figure 2 . 1 hardware ready windows update shown on windows xp you must have an active internet connection and the windows update service enabled. 1) connect the usb - com 42 2 - plus1 to your usb host or hub. 2) the found new hardware wizard will appear. the first dialog should ask whether it is acceptable to use the windows update service to find the device driver. figure 2 . 2 found new hardware wizard 3) select one of the yes choices and click next. 4) the following screen appears: figure 2 . 3 automatic install
copyright ? 2010 future technology devices international limited 8 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 5) wait while the driver is found, downloaded, and installed. this step may t ake a couple minutes base on the internet speed. 6) after the files are found and installed, click finish to complete the installation. figure 2 . 4 complete hardware installation 7) steps 2 through 6 will repeat . the first time installs the basic usb serial converter in the usb device tree. the second time installs the virtual com port layer in the ports tree and assigns the com port number. 8) when both portions of the device driver have been installed successful ly, the following message will appear, indicating that the device is ready. figure 2 . 5 hardware ready com port assignment next, to determine which com port has been assigned, open the windows device manage r from the system control panel. figure 2 . 6 device manager click on the plus + sign next to the ports tree to list the available com port. you will see usb serial port, followed by a comn assignment. in the figure below, the usb - com 42 2 - plus1 is assigned to com3 .
copyright ? 2010 future technology devices international limited 9 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 figure 2 . 7 com port assignment use this com port number with your application software in order to access the usb - com 42 2 - plus1. if an applica tion requires use of a different com port number, the assignment may be changed through the advanced driver options settings. from the device manager listing above, right - click on the usb serial port and select properties . figure 2 . 8 access com port properties next, click on the port settings tab. figure 2 . 9 settings tab then click on the advanced button.
copyright ? 2010 future technology devices international limited 10 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 figure 2 . 10 advanced options this will display the various advanced settings. note the com port assignment in the upper left. clicking on the drop - down list will display the available port numbers. select one that is not in use and click ok on each dialog box to activate the selection. windows will remember this com port number. 2.2.2 mac os x, linux, windows ce device drivers and ftdi installation guides for mac os x, linux and windows ce are available for download on the ftdichip web sites. follow th e respective ftdi installation guides for the chosen operating system.
copyright ? 2010 future technology devices international limited 11 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 3 connections 3.1 external connectors 3.1.1 usb the usb - com 42 2 - plus1 is a downstream usb 2.0 device. a standard usb series b receptacle is reference to usb - f - 1001 to facilitate connection to a n upstream usb host or hub. pin number pin type description 1 power vbus = usb power provided from upstream usb host or hub 2 bidirectional d C = usb data signal, negative polarity 3 bidirectional d+ = usb data signal, positive polarity 4 ground gnd = usb signal ground shield case ground drain = typically connected to the host pc case table 3 . 1 usb "b" receptacle pin - out 3.1.2 rs 42 2 the rs 42 2 port is configured as data terminal equipment (dte), with a 9 - conta ct d - sub pin connector. pin assignments are according to tia/eia - 422 . pin number pin type description 1 output txd - = transmit data , negative polarity 2 output txd + = transmit data , positive polarity 3 input rxd + = receive data , positive polarity 4 input rxd - = receive data , negative polarity 5 ground gnd = signal ground 6 output rts - = request to send , negative polarity 7 output rts + = request to send , positive polarity 8 input cts + = clear to send , positive polarity 9 input cts - = clear to se nd , negative polarity table 3 . 2 de - 9p rs 42 2 pin - out
copyright ? 2010 future technology devices international limited 12 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 4 electrical details 4.1 usb parameter description minimum typical maximum units conditions usb_vcc input power voltage* 4.25 5.0* 5.25 v *present when usb cable is attached and usb host or hub powered. i cc usb current 30 50 ma table 4 . 1 usb electrical details 4.2 rs 42 2 parameter description minimum typical maximum units conditions receiver input vcm common - mode in put voltage range - 7 +12 v in input current 1.0 ma vin = +12v - 0.8 vin = - 7 v vth d i fferential threshold voltage - 0.2 +0.2 v vihyst input hysteresis 20 mv rin input resistance, rin 12 15 k transmitter output vod d i fferential output voltage, 1.5 5 v with rl = 54 . cl = 50pf * esd tolerance esd hbm rs - 422 inputs and outputs 15 kv en61000 - 4 - 2 contact discharge rs - 422 inputs and outputs 8 kv en61000 - 4 - 2 air gap discharge rs - 42 2 inputs and outputs 15 kv table 4 . 2 rs 42 2 electrical details * - the 54 ohms is the equivalent of two 120 ohm termination resistors placed on each side of the transmission line and the input impedance of 32 receivers on the line.
copyright ? 2010 future technology devices international limited 13 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 5 mechanical details 5.1 module mechanical dimensions figure 5. 1 usb - com 42 2 - plus1 pcb dimensions 1 2 . 5 m m 1 4 m m 9 m m 3 1 6 m m 3 7 m m 1 3 m m 1 2 m m 1 8 m m 5 7 m m 2 1 m m 2 4 m m 1 2 m m 6 5 2 7 m m 3 0 m m 3 2 m m
copyright ? 2010 future technology devices international limited 14 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 6 physical environment details 6.1 storage parameter description minimum typical maximum units conditions t storage temperature range - 65 +150 o c table 6 . 1 storage temperature 6.2 operating parameter description minimum typical maximum units conditions t operating temperature range C 40 +85 o c 5% to 95% rh, non condensing table 6 . 2 operating temperature
copyright ? 2010 future technology devices international limited 15 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 7 environmental approvals & declarations 7.1 emi compatibility fcc and ce the usb - com 42 2 - plus1 has been tested to be compliant with both fcc par t 15 subpart b and european emc directive. note: this is a class b product. in a domestic environment, this product may cause radio interference, in which case the user may be required to take adequate measures. note: this equipment has been tested an d found to comply with the limits for a class b digital device, pursuant to part 15 of the fcc rules. these limits are designed to provide reasonable protection against harmful interference in a residential installation. this equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. however, there is no guarantee that interference will not occur in a particular installation. if this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: reorient or re locate the receiving antenna. increase the separation between the equipment and receiver. connect the equipment into an outlet on a circuit different from that to which the receiver is connected. consult the dealer or an experienced radio/tv technician for help. 7.2 safety the usb - com 42 2 - plus1 is d efine d as limited power supply (lps) device, with operating voltages under 60vdc . 7.3 environmental the usb - com 42 2 - plus1 is a lead - free device that complies with the following environmental directives: rohs, weee, reach, pfos and decabde. 7.4 reliability the usb - com 42 2 - plus1 is designed as a robust usb - serial module for use in many environments. there are no user - serviceable parts. any failure will require a replacement of the unit. 7.4.1 mttf the mean time to failure is calcul ated at tbd hours. 7.5 import / export information import / export information
copyright ? 2010 future technology devices international limited 16 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 country of origin china harmonized code tbd product description usb to rs 422 development module , single port usa eccn ear99 C no license required table 7 . 1 import / export information
copyright ? 2010 future technology devices international limited 17 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 8 troubleshooting 8.1 hardware cables are the most common sources of trouble with external devices. check the following: - usb cable is properly inserted at both ends - computer power is on - computer is not in sleep or standby - if a usb hub is used, be sure it is set for self - powered operation - if a usb hub is used, be sure all cables are properly inserted - if all the above are ok, the yellow led should be lit, indicating the device has been recognized by the us b subsystem. rs 42 2 cables C check the following: - output signals (txd + , txd - , rts+, rts - ) are connected to the respective inputs (rxd + , rxd - , cts + , cts - ) in each direction. - check for specific handshake requirements of your rs 42 2 peripheral. - if handshake s ignals are not used, ensure the application is set to no hardware handshake, or equivalent. - test the port with a loop - back connector. connect txd + to rxd + , txd - to rxd - , rts + to cts + and rts - to cts - . use a simple terminal program to check that data is transmitted and received. 8.2 device driver ensure the latest device driver is in use. see www.ftdichip.com if other devices with ftdi chips are installed in the system, check with all manufacturers of these devices for the latest device drivers. see the ft di installation guides for additional details: http://ftdichip.com/documents/installguides.htm common windows device driver troubles: device times out : the default settings of the device drive r assume typical data transfers of hundreds to thousands or more bytes at a given time. some applications, such as a gps device, only send data in short packets, often only a few bytes. if this is the case, it may be necessary to adjust the driver buffer size and/or latency timer to smaller values. these values can be adjusted through the advanced driver options as noted in figure 2.13. the buffer size can be reduced to 64 bytes. the latency timer can be set as low as 2ms. a setting of 1ms will cause unnecessary usb traffic and could adversely affect data transmission. erratic mouse pointer : the device driver defaults to query an attached device to find out whether it is a mouse or modem, consistent with native com port operation. some rs 42 2 peripher als constantly send short packets of data, causing the host system to think a mouse or modem has been attached. these short packets will interfere with normal mouse operation causing the pointer to jump around the screen. if this happens, disconnect th e rs 42 2 device and uncheck the serial enumerator option, also found on the advanced driver options screen in figure 2.13. com port in use : windows keeps track of all com port assignments. if multiple ftdichip products have been connected to a single syst em, the com port number will increase, even if the other devices are not attached. if the higher com port assignments are not acceptable for the application, known unused com port numbers should be uninstalled according to the ftdi installation guide: http://ftdichip.com/documents/installguides.htm .
copyright ? 2010 future technology devices international limited 18 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 8.3 technical support technical support may be obtained from your nearest ftdichip office: united kingdom: support1@ftdichip.com united states: us.support@ftdichip.com china: cn.support@ftdichip .com taiwan tw.support1@ftdichip.com
copyright ? 2010 future technology devices international limited 19 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 9 contact information head office C glasgow, uk future technology devices international limited unit 1, 2 seaward place , centurion business park glasgow g41 1hh united kingdom tel: +44 (0) 141 429 2777 fax: +4 4 (0) 141 429 2758 e - mail (sales) sales1@ftdichip.com e - mail (support) support1@ftdichip.com e - mail (general enquiries) admin1@f tdichip.com web site url http://www.ftdichip.com web shop url http://www.ftdichip.com branch office C shanghai, china future technology devices international limited (china) ro om 408, 317 xianxia road, changning district, shanghai, china tel: +86 (21) 62351596 fax: +86 (21) 62351595 e - mail (sales): cn.sales@ftdichip.com e - mail (support): cn .support@ftdichip .com e - mail (general enquiries): cn. admin1@ftdichip.com web site url: http://www.ftdichip.com branch office C taipei, taiwan future technology devices internationa l limited (taiwan) 2 f, no 516 , sec. 1 neihu road neihu district taipei 114 taiwan, r.o.c. tel: +886 ( 0 2 ) 879 7 13 30 fax: +886 (0 2 ) 87 5 1 97 37 e - mail (sales) tw.sales1@ftdichip.com e - mail (support) tw.support1@ftdichip.com e - mail (general enquiries) tw.admin1@ftdichip.com web site url http://www.ftdichip.com branch office C hills boro, oregon, usa future technology devices international limited (usa) 7235 nw evergreen parkway, suite 600 hillsboro, or 97123 - 5803 usa tel: +1 (503) 547 0988 fax: +1 (503) 547 0987 e - mail (sales) us.sales@ft dichip.com e - mail (support) us.support@ftdichip.com e - mail (general enquiries) us.admin@ftdichip.com web site url http: //www.ftdichip.com
copyright ? 2010 future technology devices international limited 20 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 distributor and sales representatives please visit the sales network page of the ftdi web site for the contact details of our distributor(s) and sales representative(s) in your country. vinculum is part of future technology devices i nternational ltd. neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or reproduced in any material or electronic form without the prior written consent of the copyrig ht holder. this produ ct and its documentation are supplied on an as - is basis and no warranty as to their suitability for any particular purpose is either made or implied. future technology devices international ltd will not accept any claim for damages howsoever arising as a r esult of use or failure of this product. your statutory rights are not affected. this product or any variant of it is not intended for use in any medical appliance, device or system in which the f ailure of the product might reasonably be expected to result in personal injury. this document provides preliminary information that may be subject to change without notice. no freedom to use patents or other intellectual property rights is implied by the publication of this document. future technolog y devices inte rnational ltd, unit 1, 2 seaward place, centurion business park , glasgow g 41 1hh united kingdom. scotland registered number: sc136640
copyright ? 2010 future technology devices international limited 21 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 appendix a - list of figures and tables list of figures: figure 1.1 usb - com 42 2 - plus1 ................................ ................................ ................................ ....................... 1 figure 1.2 usb - com 42 2 - plus1 block diagram ................................ ................................ ............................ 2 figure 2.1 hardware ready ................................ ................................ ................................ ............................ 7 figure 2.2 found new hardware wizard ................................ ................................ ................................ ....... 7 figure 2.3 automatic install ................................ ................................ ................................ ............................ 7 figure 2.4 complete hardwa re installation ................................ ................................ ................................ ... 8 figure 2.5 hardware ready ................................ ................................ ................................ ............................ 8 figure 2.6 device manager ................................ ................................ ................................ ............................. 8 figure 2.7 com port assignment ................................ ................................ ................................ .................. 9 figure 2.8 access com port properties ................................ ................................ ................................ ........ 9 figure 2.9 settings tab ................................ ................................ ................................ ................................ ... 9 figure 2.10 advanced options ................................ ................................ ................................ ..................... 10 figure 5.1 usb - com 42 2 - plus1 pcb dimensions ................................ ................................ ...................... 13 list of tables: table 1.1 led description ................................ ................................ ................................ .............................. 2 table 1.2 performance figures ................................ ................................ ................................ ...................... 3 table 1.3 ordering information ................................ ................................ ................................ ...................... 3 table 2.1 rs 42 2 dte to dce connection with straight - through cable ................................ ...................... 6 table 3.1 usb "b" receptacle pin - out ................................ ................................ ................................ ........ 11 table 3.2 de - 9p rs 42 2 pin - out ................................ ................................ ................................ .................... 11 table 4.1 usb electrical details ................................ ................................ ................................ ................... 12 table 4.2 rs 42 2 electrical details ................................ ................................ ................................ ............... 12 table 6.1 storage temperature ................................ ................................ ................................ .................... 14 table 6.2 operating temperature ................................ ................................ ................................ ................ 14 table 7.1 import / export information ................................ ................................ ................................ .......... 16
copyright ? 2010 future technology devices international limited 22 document reference n o.: ft_0001 31 usb - com422 - plus1 datasheet version 1.1 clearance no.: ftdi# 94 appendix b - revision history version draft first draft 1 3 march 2009 2 nd draft 18 march 2009 version 1.0 r emove iec60601 text, and update photo of pcb 04 june 2009 version 1.0 released 0 9 june 2009 version 1. 1 edited section 1.3.1, removed the statement a standard a to b cable is provided 12 th april 2010

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