C161U Datasheet, PDF (260/469 Pages) Infineon Technologies AG – Embedded C166 with USB, USART and SSC

Field
PE
FE
OE
FDE
ODD
BRS
LB
R
C161U
Asynchronous/Synchr. Serial Interface
Bits Type Value Description
8
rwh
Parity Error Flag
Set by hardware on a parity error (PEN=’1’).
Must be reset by software.
9
rwh
Framing Error Flag
Set by hardware on a framing error (FEN=’1’).
Must be reset by software.
10 rwh
Overrun Error Flag
Set by hardware on an overrun error (OEN=’1’).
Must be reset by software.
11 rw
0
1
Fractional Divider Enable
Fractional divider disabled
Fractional divider is enabled and used as
prescaler for baudrate timer (bit BRS is don’t
care)
12 rwh
0
1
Parity Selection
Even parity selected (parity bit set on odd
number of ‘1’s in data)
Odd parity selected (parity bit set on even
number of ‘1’s in data)
Bit is be set/cleared by hardware after a
successfull autobaud detection operation.
13 rw
0
1
Baudrate Selection
Baudrate timer prescaler divide-by-2 selected
Baudrate timer prescaler divide-by-3 selected
BRS is don’t care if FDE=1 (fractional divider
enabled)
14 rw
0
1
Loopback Mode Enable
Loopback mode disabled
Loopback mode enabled
15 rw
0
1
Baudrate Generator Run Control
Baudrate generator disabled (ASC_P inactive)
Baudrate generator enabled
BG should only be written if R=’0’.
Data Sheet
260
2001-04-19