Uart Operation; Example Of Initial Setting - Fujitsu MB86R02 Jade-D Hardware Manual

MB86R02 'Jade-D' Hardware Manual V1.64

28.7 UART operation

28.7.1 Example of initial setting

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1. After the power-on, macro's each output pin is undefined. Each output pin level becomes
the one shown in the table of chapter 5 by inputting "L" to reset (MR) pin.
2. Divider latch is able to be accessed by setting "1" to DLAB bit in the Line control register
(LCR register.)
3. Set baud rate clock (refer to "28.6.11 Divider latch register (URTxDLL&URTxDLM)".)
4. Set "0" to DLAB bit in the Line control register.
5. Set transmission/reception format by setting the Line control register.
6. Control each interrupt by setting the Interrupt enable register (IER register.)
28-16
Set D LA B bi t of l i ne cont rol r egi st er
Set l ow or der f r equency di vi di ng l at ch
Set hi gh or der f r equency di vi di ng l at ch
Reset D LA B bi t of l i ne cont r ol regi st er
Set t r ansm i ssi on/r ecept i on f or m at i n l i ne cont r ol r egi st er
Set i nt er r upt enabl e r egi st er
Figure 28-2 Example of initial setting
Reset
End