Intel CONTROLLERS 413808 Manuale Utente Scaricare il pdf (Pagina 674)

31:8 00 0000h Reserved

Interrupt Trigger Level (ITL): When the number of bytes in the receiver FIFO

equals the interrupt trigger level programmed into this field and the Received Data

Available Interrupt is enabled (via IER), an interrupt is generated and appropriate

bits are set in the IIR.

00 = 1 byte or more in FIFO causes interrupt

01 = 8 bytes or more in FIFO causes interrupt

10 = 16 bytes or more in FIFO causes interrupt

11 = 32 bytes or more in FIFO causes interrupt

Transmitter Interrupt Level (TIL): Setting TIL causes Transmitter Interrupts to

occur when the Transmit FIFO is empty. Clearing TIL causes Transmitter Interrupts

to occur when the Transmit FIFO is half empty.

0 = Interrupt when FIFO is half empty

1 = Interrupt when FIFO is empty

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Intel CONTROLLERS 413808 Manuale Utente Pagina 674