HI-3110
Table 2. SPI Transmit Data Format
a) Standard Frame Transmit
Byte
1
Byte Content
Bit Description (”x” = Don’t care)
x
x
Message Tag*
ID28 to ID21
2
x
x x
3
ID20 to ID18, RTR, IDE
r0, DLC3 to DLC0
*Data Byte 1
x
x x
4
5
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
6
Data Byte 2
7
Data Byte 3
8
Data Byte 4
9
Data Byte 5
10
11
12
Data Byte 6
Data Byte 7
Data Byte 8
* Note: The Message Tag is a host-assigned identifier that is stored along with a time tag in the Transmit
History FIFO. It can be used by the host to log successfully transmitted messages at a later time.
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