TL16C754 Datasheet, PDF (36/39 Pages) Texas Instruments – QUAD UART WITH 64-BYTE FIFO

TL16C754
QUAD UART WITH 64-BYTE FIFO
SLLS279A – OCTOBER 1998 – REVISED OCTOBER 1999
PRINCIPLES OF OPERATION
TL16C754 Programmer’s Guide (continued)
Set xmt and rcv FIFO thresholds to VALUE
Read FIFORdy register
Read LCR (03), save in temp1
Set LCR (03) to BF
Read EFR (02), save in temp2
Set EFR (02) to 10 + temp2
Set LCR (03) to 00
Read MCR (04), save in temp3
Set MCR (04) to 40 + temp3
Set TLR (07) to VALUE
Set LCR (03) to BF
Set EFR (02) to temp2
Set LCR (03) to temp1
Set MCR (04) to temp2
Read MCR (04), save in temp1
Set temp2 = temp1 * EF
Set MCR (04), save in temp2
Read FRR (07), save in temp2
Pass temp2 back to host
Set MCR (04) to temp1
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