Datasheet
TL16C752B-EP
www.ti.com
SGLS153B –FEBRUARY 2003–REVISED DECEMBER 2007
TL16C752B Programmer's Guide
The base set of registers that is used during high speed data transfer have a straightforward access method. The
extended function registers require special access bits to be decoded along with the address lines. The following
guide helps with programming these registers. Note that the descriptions below are for individual register access.
Some streamlining through interleaving can be obtained when programming all the registers.
Set baud rate to VALUE1, VALUE2 Read LCR (03), save in temp
Set LCR (03) to 80
Set DLL (00) to VALUE1
Set DLM (01) to VALUE2
Set LCR (03) to temp
Set Xoff1, Xon1 to VALUE1, VALUE2 Read LCR (03), save in temp
Set LCR (03) to BF
Set Xoff1 (06) to VALUE1
Set Xon1 (04) to VALUE2
Set LCR (03) to temp
Set Xoff2, Xon2 to VALUE1, VALUE2 Read LCR (03), save in temp
Set LCR (03) to BF
Set Xoff2 (07) to VALUE1
Set Xon2 (05) to VALUE2
Set LCR (03) to temp
Set software flow control mode to VALUE Read LCR (03), save in temp
Set LCR (03) to BF
Set EFR (02) to VALUE
Set LCR (03) to temp
Set flow control threshold to VALUE 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 TCR (06) to VALUE
Set MCR (04) to temp3
Set LCR (03) to BF
Set EFR (02) to temp2
Set LCR (03) to temp1
Set xmt and rcv FIFO thresholds to VALUE 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 MCR (04) to temp3
Set LCR (03) to BF
Set EFR (02) to temp2
Set LCR (03) to temp1
Read FIFORdy register Read MCR (04), save in temp1
Set temp2 = temp1 y EF; (x sign here means bit-AND)
Set MCR (04) = 04 + temp2
Read FRR (07), save in temp2 Pass temp2 back to host
Set MCR (04) to temp1
Set prescaler value to divide-by-one 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 temp3 y 7F; (y sign here means bit-AND)
Set LCR (03) to BF
Set EFR (02) to temp2
Set LCR (03) to temp1
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