XC161 Datasheet, PDF (176/419 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)
18.5.4 Overwriting Registers on Successful Autobaud Detection
With a successful Autobaud Detection some bits in registers ASCx_CON and ASCx_BG
are automatically set to a value which corresponds to the mode and baudrate of the
detected serial frame conditions (see Table 18-11). In control register ASCx_CON the
mode control bits M and the parity select bit ODD are overwritten. Register ASCx_BG is
loaded with the 13-bit reload value for the baudrate timer.
Table 18-11 Autobaud Detection Overwrite Values for the CON Register
Detected Parameters
M
ODD
BR_VALUE
Operating Mode 7 bit, even parity 0 1 1
0
–
7 bit, odd parity 0 1 1
1
8 bit, even parity 1 1 1
0
8 bit, odd parity 1 1 1
1
8 bit, no parity
001
0
Baudrate
Br0
Br1
Br2
Br3
Br4
Br5
Br6
Br7
Br8
–
–
2 = 002_H
5 = 005_H
11 = 00B_H
17 = 011_H
35 = 023_H
71 = 047_H
143 = 08F_H
287 = 11F_H
575 = 23F_H
Note: The autobaud detection interrupts are described in Section 18.7.
User’s Manual
ASC_X, V2.0
18-33
V2.2, 2004-01