Infineon TLE984 Series, Firmware User Manual

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Firmware User Manual (AE-step) 29 Revision 1.02
2019-04-24
TLE984x Firmware User Manual
Figure 4-8 LIN mode - LIN Frames
The Master Request Header is transmitted from the host to the BootROM, followed by the command, which is
the header block. The Slave Response Header is transmitted to check the status of the operation. To save
protocol overhead, the BootROM supports multiple data block transfers, sending a Slave Response Header is
only allowed after the EOT block has been sent. Sending a Slave Response Header between data blocks will
result in a communication error. As the commands are sent one after another without waiting for any status
indication, a certain delay is required (as shown in
Figure 4-9 ) to ensure sufficient time is provided for the
BootROM to execute the desired operations.
Figure 4-9 shows the LIN frame communication for BSL commands, where no data blocks and EOT blocks are
involved.
B12PHASEDETAIL
.
SYN
Break
(At least
13 bit low)
SYN
Char
55
H
Protected
ID
3C
H
Host BootROM
7 Data bytes for
Command
Checksum
(1 byte)
Master Request Header
Command
Slave Response Header
Checksum
(1 byte)
Response
SYN
Break
(At least
13 bit low)
SYN
Char
55
H
Protected
ID
7D
H
NAD
7 Data bytes for
Command
NAD