TL16C752BTPTREP datasheet(33/35 Pages) TI

33 / 35 page

TL16C752B-EP

3.3-V DUAL UART WITH 64-BYTE FIFO

SGLS153 – FEBRUARY 2003

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

PRINCIPLES OF OPERATION

TL16C752B-EP programmer’s guide (continued)

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

× 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

× 7F; (× sign here means bit-AND)

Set LCR (03) to BF

Set EFR (02) to temp2

Set LCR (03) to temp1

Set prescaler value to divide-by-four

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 + 80

Set LCR (03) to BF

Set EFR (02) to temp2

Set LCR (03) to temp1

TL16C752BTPTREP Datasheet(PDF) 33 Page - Texas Instruments

TL16C752BTPTREP Datasheet(HTML) 33 Page - Texas Instruments

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