Baud Rates In Synchronous Mode - Infineon Technologies TC1728 User Manual

17.1.5.2 Baud Rates in Synchronous Mode

For synchronous operation, the baud rate generator provides a clock
four times the established baud rate (see
f
ASC
R
Figure 17-9 ASC Baud Rate Generator Circuitry in Synchronous Mode
The baud rate for synchronous operation of the serial channel ASC can be determined
by the formulas as shown in
Table 17-5 Synchronous Baud Rate Formulas
BRS BG
0 0 ... 8191
1
BG represents the content of the reload register bit field BG.BR_VALUE, taken as an
unsigned 13-bit integer.
User's Manual
ASC, V1.3 2007-11
Asynchronous/Synchronous Serial Interface (ASC)
Figure
13-bit Reload Register
2
f
DIV
13-bit Baud Rate Timer
MUX
3
BRS
Table 17-5.
Formula
Baud rate = -------------------------------- -
×
8
Baud rate =
17-17
17-9).
f
BRT
BRS
0
1
f
ASC
BG =
( )
BG + 1
f
ASC
BG
----------------------------------- -
× ( )
12 BG + 1
TC1728
f
that runs with
BRT
Shift /
4 Sample
Clock
Selected Divider
2
3
MCA06208
f
ASC
---------------------------------- - 1
–
×
8 Baud rate
f
ASC
= -------------------------------------- - 1
–
×
12 Baud rate
V1.0, 2011-12