DLPU048E August 2016 – July 2024
Table 3-15, Table 3-16, and Figure 3-11 describe the I2C Short Status Read protocol.
Data Write:
| DATA BYTE | DESCRIPTION |
|---|---|
| CMD | 1-byte write command op-code. This is C0h for Short Status. |
| Tag | 1-byte identifier used to uniquely mark each command sent by host controller. |
| Length | Length of the transmitted data payload. This is always 0 for Short Status. |
| CRC | CRC or checksum for the read header data. This includes the op-code, tag, and length. |
Data Read:
| DATA BYTE | DESCRIPTION |
|---|---|
| CMD (ACK) | Echo of the received op-code from the host controller. |
| Tag (ACK) | Echo of the received tag from the host controller. |
| LengthR | Length of the short status data. (Data1a, Data1b). This is always 4 for Short Status. |
| Data1(a:d) | Short Status data. This data is defined in Section 8.2.87 (Main Application) and Section 7.2.6 (Boot Application). |
| CRC-R | CRC or checksum for the read header data. This includes the op-code, tag, length, and Short Status data. |