## Physical Device Driver Reference

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### PRT_SETDATAXFERMODE (53h) - Remarks

The set parallel port data transfer mode IOCtl informs the parallel port device driver of the length of time, in milliseconds, to wait for a hardware interrupt to occur before the data transfer is canceled. It informs the parallel port device driver of the length of time, in milliseconds, to wait for the entire request to complete before the data transfer is canceled. The IOCtl also informs the parallel port device driver of the logical channel to use for the data transfer.

The write idle timeout value is the same value as the timeout value specified in the Set Parallel Port Write Timeout Value IOCtl. The write idle timeout value is set to the value specified on the last issuance of either the Function 4E or Function 53 IOCtl.