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XMC1100
XMC1000 Family
Universal Serial Interface Channel (USIC)
PSR
Protocol Status Register [ASC Mode] (48H)
31
30
29
28
13
14
AIF
RIF TBIF TSIF DLIF RSIF
rwh
rwh
rwh
11
26
15
rwh
12
27
rwh
10
rwh
25
9
24
Reset Value: 0000 0000H
23
22
21
20
19
18
17
16
0
BRG
IF
r
rwh
8
7
6
5
4
3
2
1
0
FER FER
RXID TXID
BUS
RNS COL SBD
TFF RFF
Y
1
0
LE LE
r
rwh
rwh
rwh
rwh
rwh
rwh
rwh
rwh
rwh
Field
Bits
Type Description
TXIDLE
0
rwh
Transmission Idle
This bit shows if the transmit line (DX1) has been idle. A
frame transmission can only be started if TXIDLE is set.
The transmitter line has not yet been idle.
0B
The transmitter line has been idle and frame
1B
transmission is possible.
RXIDLE
1
rwh
Reception Idle
This bit shows if the receive line (DX0) has been idle. A
frame reception can only be started if RXIDLE is set.
0B
The receiver line has not yet been idle.
The receiver line has been idle and frame reception
1B
is possible.
SBD
2
rwh
Synchronization Break Detected1)
This bit is set if a programmed number of consecutive bit
values with level 0 has been detected (called
synchronization break, e.g. in a LIN bus system).
A synchronization break has not yet been detected.
0B
A synchronization break has been detected.
1B
COL
3
rwh
Collision Detected1)
This bit is set if a collision has been detected (with
PCR.CDEN = 1).
0B
A collision has not yet been detected and frame
transmission is possible.
A collision has been detected and frame
1B
transmission is not possible.
Reference Manual
USIC, V2.10
14-69
V1.0, 2013-03
Subject to Agreement on the Use of Product Information