## Physical Device Driver Reference

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### ASYNC_EXTSETBAUDRATE (43h) - Extended Set Bit Rate

Category:
IOCTL_ASYNC (01h)
Function:
ASYNC_EXTSETBAUDRATE (43h)
Description:
Extended Set Bit Rate

Select an item:

    Description
    Parameter Packet Format
    Data Packet Format
    Returns
    Remarks

This function sets the bit rate in doublewords to cover bit rates higher than 19200 bps.