Note: This question does not apply to I3C Basic v1.0.
Only for Data. The Data bytes are sent the same way as in SDR Mode. Figure 1 shows how Data is transferred from memory to the I3C Data Line.
Figure 1 Data DWORDs sent as SDR Data Bytes and HDR-DDR Data Words
The Command and CRC Byte are each transferred as a packet instead:
Command (MSb to LSb):
- Preamble (2 bits)
- Command (8 bits)
- Target address (7 bits)
- Reserved bit (1 bit)
CRC (MSb to LSb):
- Preamble (2 bits)
- Token (4 bits)
- CRC Byte (5 bits)
- Setup bits (2 bits)
Note: I3C Basic v1.1.1 and I3C v1.1+ already clarify the HDR-DDR protocol and coding details.
FAQ Category:
FAQ Type:
I3C