Bitrates supported by Twister 1200 MK II:

• Knowledge of this table is usefull if there is trouble when trying to communicate between different interfaces. If you enter a special bitrate at a terminal application (or something else) the nearest possible bitrate will be choosen. These could be different rates!
• The table is based on a generic formula, which is the same for all devices using the 16Cx50 family UARTs. They require a clock which is 16 times higher than the bitrate.
• The max. bitrate at Twister (22.1184 Mhz X-TAL) would be 1,382,400 BPS which is too much for the transceiver chip used. An additional register controls a clock divider which supports 16 bit natural numbers (0..65535).
• Using this calculation there are natural values and fractional values for the bitrate. The fractional values were replaced with a bar on some entries.
• If the fractional number was close enough to an "important" value the deviation from that value was entered.
• Attention: Modems and ISDN-TAs usually support "autobaud". This is not supported at higher rates. For Zyxel-OMNI you'll have to do a manual selection at that device if you like to go beyond 460,800 BPS.
• Any rate lower than 9600 has got a continiously decreasing deviation of 0.7%.

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