SC16C754B NXP Semiconductors, SC16C754B Datasheet - Page 34

• Manufacturer Part Number: SC16C754B
• Description: 5 V - 3.3 V and 2.5 V quad UART - 5 Mbit/s (max.)
• Manufacturer: NXP Semiconductors

NXP Semiconductors
SC16C754B_4
Product data sheet
Table 23.
[1]
Command
set TX FIFO and RX FIFO thresholds
to VALUE
read FIFO Rdy register
set prescaler value to divide-by-1
set prescaler value to divide-by-4
sign here means bit-AND.
Register programming guide
5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 64-byte FIFOs
Rev. 04 — 6 October 2008
…continued
Actions
read LCR (03h), save in temp1
set LCR (03h) to BFh
read EFR (02h), save in temp2
set EFR (02h) to 10h + temp2
set LCR (03h) to 00h
read MCR (04h), save in temp3
set MCR (04h) to 40h + temp3
set TLR (07h) to VALUE
set MCR (04h) to temp3
set LCR (03h) to BFh
set EFR (02h) to temp2
set LCR (03h) to temp1
read MCR (04h), save in temp1
set temp2 = temp1
set MCR (04h) = 40h + temp2
read FFR (07h), save in temp2
pass temp2 back to host
set MCR (04h) to temp1
read LCR (03h), save in temp1
set LCR (03h) to BFh
read EFR (02h), save in temp2
set EFR (02h) to 10h + temp2
set LCR (03h) to 00h
read MCR (04h), save in temp3
set MCR (04h) to temp3
set LCR (03h) to BFh
set EFR (02h) to temp2
set LCR (03h) to temp1
read LCR (03h), save in temp1
set LCR (03h) to BF
read EFR (02h), save in temp2
set EFR (02h) to 10h + temp2
set LCR (03h) to 00h
read MCR (04)h, save in temp3
set MCR (04h) to temp3 + 80h
set LCR (03)h to BFh
set EFR (02h) to temp2
set LCR (03h) to temp1
EFh
SC16C754B
[1]
7Fh
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[1]
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