SC68C752BIBS,157 NXP Semiconductors, SC68C752BIBS,157 Datasheet - Page 31

• Manufacturer Part Number: SC68C752BIBS,157
• Description: IC UART DUAL 32HVQFN
• Manufacturer: NXP Semiconductors

Specifications of SC68C752BIBS,157

• Number Of Channels: 2, DUART
• Fifo's: 64 Byte
• Voltage - Supply: 2.5V, 3.3V, 5V
• With Auto Flow Control: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935280969157; SC68C752BIBS; SC68C752BIBS

NXP Semiconductors
8. Programmer’s guide
SC68C752B_4
Product data sheet
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 will help 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.
Table 24.
Command
Set baud rate to VALUE1, VALUE2
Set Xoff1, Xon1 to VALUE1, VALUE2
Set Xoff2, Xon2 to VALUE1, VALUE2
Set software flow control mode to VALUE
Set flow control threshold to VALUE
Register programming guide
5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 64-byte FIFOs
Rev. 04 — 20 January 2010
Actions
read LCR (03h), save in temp
set LCR (03h) to 80h
set DLL (00h) to VALUE1
set DLM (01h) to VALUE2
set LCR (03h) to temp
read LCR (03h), save in temp
set LCR (03h) to BFh
set Xoff1 (06h) to VALUE1
set Xon1 (04h) to VALUE2
set LCR (03h) to temp
read LCR (03h), save in temp
set LCR (03h) to BFh
set Xoff2 (07h) to VALUE1
set Xon2 (05h) to VALUE2
set LCR (03h) to temp
read LCR (03h), save in temp
set LCR (03h) to BFh
set EFR (02h) to VALUE
set LCR (03h) to temp
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 TCR (06h) to VALUE
set MCR (04h) to temp3
set LCR (03h) to BFh
set EFR (02h) to temp2
set LCR (03h) to temp1
SC68C752B
© NXP B.V. 2010. All rights reserved.
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