USB to Serial Convertor ATEN uc 232a

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http://forums.opensuse.org – I am using Aten UC232A Converter to communicate with my micro-controller device using 3 wire interface ie txd, rxd and ground. Though the converter gets detected and driver loaded in my suse11.2. The operation does not work. following are the logs. any help? yast drivers/usb/serial/usb-serial.c: USB Serial support registered for pl2303 pl2303 4-2:1.0: pl2303 converter detected usb 4-2: pl2303 converter now attached to ttyUSB0 usbcore: registered new interface driver pl2303 drivers/usb/serial/pl2303.c: Prolific PL2303 USB to serial adaptor driver pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0 pl2303 4-2:1.0: device disconnected pl2303 4-1:1.0: pl2303 converter detected usb 4-1: pl2303 converter now attached to ttyUSB0 stty : speed 9600 baud; rows 0; columns 0; line = 0; intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>; eol2 = <undef>; swtch = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 0; -parenb -parodd cs8 hupcl -cstopb cread clocal -crtscts -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff -iuclc -ixany -imaxbel -iutf8 opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0 -isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke (Distributions)