Firmware User Manual (AE-step)
37
Revision 1.02
2019-04-24
TLE984x Firmware User Manual
4.3
BSL via FastLIN
FastLIN is a LIN enhancement supporting higher baud rates of up to 230.4 kBd. This rate is higher than the
standard LIN. FastLIN is especially useful during back-end programming, where faster programming time is
desirable.
The FastLIN BSL protocol supports baud rates of 38.4 kBd, 115.2 kBd and 230.4 kBd via the internal LIN TrxHW
module using the UART BSL protocol.
The FastLIN checksum calculation algorithm is the same algorithm used for the LIN interface (see
). The checksum is the last field of Command and Response FastLIN frames.
The FastLIN passphrase frame format is the same as used for the LIN see
.
For user mode, the default FastLIN baudrate is 115.2 kBd. The actual session baud rate can be changed with
the BSL command
“Command 93H – FastLIN: Set Session Baudrate” on Page 68
.
shows the interaction between Hardware and software layers for the BSL FastLIN mode .
Figure 4-14 BSL FastLIN Mode HW/SW Layers
BSL_FAST_LIN_MODE_LAYER
S
SW
HW
SFRs
Tx
Rx
LIN
GND_LIN
LIN Tranceiver