what is output design rules
see this:
**broken link removed**
Features:
* USB 2.0 compliant Full Speed 12Mbps maximum speed; Suspend
supported
* Xon/Xoff handshaking supported; 300bps to 1Mbps
* UART supports 5-8 bit data, 1-2 Stop bits, odd/even and no parity
* Integrated EEPROM with security lock for Vendor ID, product ID, serial and
release number, power descriptor and product descriptor strings
* On-board 3.3V and 5V available
* Virtual COM port drivers allow operation with existing COM port
applications
* Supports Windows (2000 and above), MAC (OSX-9 and above), Linux (2.4
kernel and above)
* Self powered or USB powered; -40 to +85 deg C temp range