SC16C752B datasheet(32/47 Pages) PHILIPS

32 / 47 page

Philips Semiconductors

SC16C752B

5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 64-byte FIFOs

Product data

Rev. 03 — 14 December 2004

32 of 47

9397 750 14443

[1]

× sign here means bit-AND.

Set TX FIFO and RX 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 FIFO Rdy register

Read MCR (04), save in temp1

Set temp2 = temp1

× EF [1]

Set MCR (04) = 40 + temp2

Read FFR (07), save in temp2

Pass temp2 back to host

Set MCR (04) to temp1

Set prescaler value to divide-by-1

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 [1]

Set LCR (03) to BF

Set EFR (02) to temp2

Set LCR (03) to temp1

Set prescaler value to divide-by-4

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

Table 23:

Command

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