SAE 81C90/91
07Feb95@09:05h Intermediate Version
Message Time Stamp
This mechanism stores the time at which a specific message was received, i.e. it assigns a time
stamp to that message. For this purpose the contents of the free-running time stamp counter TSC
is copied to the time stamp register TSRn of the respective message object upon reception of this
message.
The Time Stamp Counter Registers provide access to the free-running time stamp counter.
TSCH
7
6
5
4
3
2
1
0
Address: 1C
TSC.15 TSC.14 TSC.13 TSC.12 TSC.11 TSC.10 TSC.9 TSC.8
H
Reset Value: 00
rw
rw
rw
rw
rw
rw
rw
rw
H
TSCL
7
6
5
4
3
2
1
0
Address: 1D
TSC.7 TSC.6 TSC.5 TSC.4 TSC.3 TSC.2 TSC.1 TSC.0
rw rw rw rw rw rw rw rw
H
Reset Value: 00
H
Bit(field)
TSC
Function
Time Stamp Counter
Current contents of the free running time stamp counter.
The Time-Stamp Registers are available for each of message objects 0...7 (see table below) and
contain the time-stamp of the corresponding message. These registers can only be read.
TSRnH
7
6
5
4
3
2
1
0
TSn.8
r
Address: 3X
TSn.15 TSn.14 TSn.13 TSn.12 TSn.11 TSn.10 TSn.9
H
Reset Value: UU
r
r
r
r
r
r
r
H
TSRnL
7
TSn.7
r
6
TSn.6
r
5
TSn.5
r
4
TSn.4
r
3
TSn.3
r
2
TSn.2
r
1
TSn.1
r
0
TSn.0
r
Address: 3X
H
Reset Value: UU
H
Bit(field)
TSn
Function
Time Stamp n
A 16-bit timer value to identify the time of reception of message n.
n = 0...7
Semiconductor Group
28
INFINEON [ Infineon ]
