XC161 Datasheet, PDF (168/419 Pages) Infineon Technologies AG – 16-Bit Single-Chip Microcontroller with C166SV2 Core Volume 2 (of 2): Peripheral Units

XC161 Derivatives
Peripheral Units (Vol. 2 of 2)
Asynchronous/Synchronous Serial Interface (ASC)
Table 18-5 Async. Baudrate Formulas Using the Fractional Input Clock Divider
FDE BRS BG
FDV
Formula
1
–
1 … 8191 1 … 511
Baudrate
=
F-----D----V---
512
×
-------------^f--^A---^S---^C---------------
16 × (BG + 1)
0
Baudrate = -------------^f--^A---^S---^C---------------
16 × (BG + 1)
Table 18-6 Typical Asynchronous Baudrates Using the Fractional Input Clock
Divider
f_ASC
Desired
Baudrate
BG
FDV
Resulting
Baudrate
Deviation
40 MHz 115.2 kbit/s
04_H
076_H
115.234 kbit/s 0.02%
57.6 kbit/s
04_H
03B_H
57.617 kbit/s
0.02%
38.4 kbit/s
0E_H
076_H
38.411 kbit/s
0.02%
19.2 kbit/s
0E_H
03B_H
19.206 kbit/s
0.02%
User’s Manual
ASC_X, V2.0
18-25
V2.2, 2004-01