Infineon TLE984 Series, Firmware User Manual

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Firmware User Manual (AE-step) 31 Revision 1.02
2019-04-24
TLE984x Firmware User Manual
Figure 4-11 shows the LIN frame communication for BSL commands, where data are read from the device.
BootROM provides such data over data blocks and EOT blocks.
Figure 4-11 LIN Communication: Request Command and Data Response
4.2.1.1 Command Message Protocol
This section describes the Master Request Header and the Master Request Block which are sent by the the
host for each LIN command frame. The Master Request Header contains synchronization bytes to detect the
start of a frame and to detect the baud rate.
Master Request Header
Table 4-2 Master Request Header Field Description
Field
Description
Synch Break At least 13 bits must be low
Synch Char Always 55
H
Protected ID Always 3C
H
Master Request
Block Commands as described in “Master Request Block” on Page 32 .
LIN_FRAME3_UML
.
Host BootROM
Master Request Header
Master Request Block (Command)
Delay for processing and executing BSL command is needed.
Otherwise no response is possible
Slave Response Header
<<<< Delay >>>>
Slave Response Header
…
…
…
...
Multiple Slave Response Header are sent by the Host ,
where BootROM replies with Data Blocks.
These Data Blocks contain the required data.
BootROM sends the last
Bytes always with an EOT
packet.
Slave Response Block (Data)
Slave Response Block (Data)
Slave Response Header
Slave Response Block (EOT)
MASTER_REQUEST_HEADER
.
Synch Char
(1 byte)
Synch Break
Protected ID
(1 byte)
Master Request Block
(9 byte)