Firmware User Manual (AE-step)
32
Revision 1.02
2019-04-24
TLE984x Firmware User Manual
Master Request Block
A simple protocol is defined for the communication between the the host and BootROM. The
is followed by the Master Request Block.
4.2.1.2
Response Message Protocol
The BootROM reply is sent to the the host only when a Slave Response Header frame is received. The BootROM
reply is always sent in a transfer block of 9 bytes (consisting of Slave Response Header and Slave Response
Block).
Slave Response Header
This header is sent by the the host to initiate that the BootROM sends a Slave Response Block.
Slave Response Block
Table 4-3 Master Request Block Field Description
Field
Description
NAD
Node Address for Diagnostic, specifies the address of the active slave node.
See
.
BSL Protocol Block This field determines the type of the BSL message.
The size of this block is always 7 Bytes. The block is filled up with dummy Bytes (zeros) in
case the BSL message is smaller.
Checksum
This checksum is calculated based on the NAD and BSL protocol block.
See
.
Table 4-4 Slave Response Header Field Description
Field
Description
Synch Break
At least 13 bits must be low
Synch Char
Always 55
H
Protected ID
Always 7D
H
LIN_FRAME_FORMAT
.
Checksum
(1 byte)
BSL Protocol Block
(7 bytes)
NAD
(1 byte)
SLAVE _RESPONSE _HEADER
.
Synch Char
(1 byte)
Synch Break
Protected ID
(1 byte)
LIN_RESPONSE_FORMAT
.
Checksum
(1 byte)
BSL Protocol Data/EOT/Response Block
(7 bytes)
NAD
(1 byte)