Tt Matrix Limits1 Register (Addresses 0X2B & 0X2A); Tt Matrix Limits2 Register (Addresses 0X2D & 0X2C) - Bosch TTCAN User Manual

TTCAN
EECS Enable External Clock Synchronisation
one
zero
TTMode TTCAN Operation Mode
0x0
0x1
0x2
0x3
Note : The CPU may write to the TT Operation Mode register only during initialisation (Init and CCE
are set). Configuration Mode enables the write access to the other TTCAN configuration regis-
ters. The whole CAN module remains in initialisation mode while TTMode is TTMode_1, "Con-
figuration Mode", even if Init is reset.
The following registers require TTMode_1 "Configuration Mode" to be writable :
Trigger Memory Access
TT Operation Mode15-2
TT Matrix Limits1
TT Matrix Limits2
TT Application Watchdog
TUR-NumeratorCfg
TUR-DenominatorCfg
Clock Control15-8
3.5.4 TT Matrix Limits1 Register (addresses 0x2B & 0x2A)
15 14 13
res
r
ETT Expected Tx_Trigger
0x000-0xfFF
3.5.5 TT Matrix Limits2 Register (addresses 0x2D & 0x2C)
15 14 13
RDLC
rw
RDLC Reference Message Data Length Code
0x0
0x1-0xF
TEW Tx_Enable Window
0x0-0xF
BOSCH
User's Manual
TUR Configuration (NumCfg only) may be updated during
TTCAN operation.
TUR Configuration may not be updated.
TTMode_0 Event driven CAN Communication (default mode).
TTMode_1 Configuration Mode.
TTMode_2 Strictly Time Triggered Operation.
TTMode_3 Event Synchronised Time Triggered Operation.
Name Reset Value
0x0000
0x0000
0x0000
0x0000
0x0001
0x0000
0x1000
0x0000
12 11 10
Expected number of Tx_Triggers in one matrix cycle.
12 11 10
TEW
rw
invalid value.
DLC of Reference Message to transmit when Time Master.
Length of Tx_Enable Window.
Defines communication schedule
Time mastership, clock control
Number of transmissions
Length of cycle components
Watchdog service interval
Length of NTU
Length of NTU
Clock calibration, stopwatch, TMI
9 8 7 6
ETT
rw
9 8 7 6
res
r
- 31/77 -
Function
5 4 3 2
5 4 3 2
CCM
rw
Revision 1.6
1 0
1 0
11.11.02