Figure 675. Transmit Order For Various Sizes Of Data; Figure 676. Packet Format - ST STM32G4 Series Reference Manual

RM0440
Packet format
The packet format is shown below in
of the data (e.g. physical layer / protocol layer).
Preamble (training for receiver)
...
LEGEND:
Training sequence provided by the Physical
layer, not encoded with 4b5b

Figure 675. Transmit order for various sizes of data

b31
b31 Transmit last b16
Transmit last

Figure 676. Packet format

SOP* (start of packet)
Byte
Byte n CRC
n-1
USB Type-C™ / USB Power Delivery interface (UCPD)
b15
b15
Bit 4 Bit 3 Bit 2 Bit 1
Figure 676. This also details the encoding, the source
Header
EOP (end of packet)
Provided by the Physical layer,
encoded with 4b5b
RM0440 Rev 1
b0
Transmit first b0
b7 b0
b8
b7 b4 b3 b0
4b5b
bit4 bit0
Bit 0
Transmit first
Byte 0 Byte 1
Provided by the Protocol layer,
encoded with 4b5b
MSv45538V1
...
MSv45539V1
2007/2083
2040