SDA6000 Datasheet, PDF (221/380 Pages) Infineon Technologies AG – Teletext Decoder with Embedded 16-bit Controller

SDA 6000
Peripherals
and the parity select bit CON_ODD are overwritten. Register BG is loaded with the 13-bit
reload value for the baud rate timer.
Table 7-23 Autobaud Detection Overwrite Values for the CON Register
Detected Parameters
CON_M CON_ODD BG_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
Baud rate
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
7.3.5 ASC Hardware Error Detection Capabilities
To improve the safety of serial data exchange, the serial channel ASC0 provides an error
interrupt request flag, which indicates the presence of an error, and three (selectable)
error status flags in register S0CON, which indicate which error has been detected
during reception. Upon completion of a reception, the error interrupt request line S0EIR
will be activated simultaneously with the receive interrupt request line S0RIR if one or
more of the following conditions are met:
• The framing error detection enable bit S0FEN is set and any of the expected stop bits
are not high, the framing error flag S0FE is set, indicating that the error interrupt
request is due to a framing error (Asynchronous mode only).
• If the parity error detection enable bit S0PEN is set in the mode where a parity bit is
received, and the parity check on the received data bits proves false, the parity error
flag S0PE is set, indicating that the error interrupt request is due to a parity error
(Asynchronous mode only).
• If the overrun error detection enable bit S0OEN is set and the last character received
was not read out of the receive buffer by software or PEC transfer at the time the
reception of a new frame is complete, the overrun error flag S0OE is set, indicating
that the error interrupt request is due to an overrun error (Asynchronous and
synchronous mode).
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2000-06-15