Baud Rate Of The Uart Internal Clock Using The Dedicated Baud Rate Generator - Fujitsu F2MC-16LX Hardware Manual

21.6.1 Baud Rate of the UART Internal Clock Using the
Dedicated Baud Rate Generator
Indicates baud rates possible to set when selecting a dedicated baud rate generator, as
an UART transfer clock.
Baud Rate of the Internal Clock Using the Dedicated Baud Rate Generator
Divides the machine clock by setting the 11-bit reload value at the UART prescaler control registers 0 to 3
(UTCR0 to UTCR3), and the UART prescaler reload registers 0 to 3 (UTRLR0 to UTRLR3).
<Asynchronous mode>
BAUD RATES= φ/4n (bps)
φ: Frequency of the machine clock, n: Values of D10 to D0 (UTCR0 to UTCR3, UTRLR0 to UTRLR3)
However, please set neither n=1, 2 nor 3.
<Synchronous mode>
BAUD RATES = 2φ/n (bps)
φ : Frequency of the machine clock, n : Values of D10 to D0 (UTCR0 to UTCR3, UTRLR0 to UTRLR3)
However, please set n to "00
Note:
Setting "01
set bit generates the serial clock whose duty ratio is different. So set D1 and D0 (bit1 and bit0 of
UTRLR0 to UTRLR3) to "00
", in case of n ≥ 16 (D1, D0).
B
", "10 ", and "11 " to D1 and D0 (bit1 and bit0 of UTRLR0 to UTRLR3) of the basic cycle
B B B
" when in the clock synchronization mode.
B
CHAPTER 21 UART
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