Writes bytes of data to the current fabric APB address as specified by APBADDR. The addressed fabric peripheral generates an error or fail to respond within a user-defined window, in that case the corresponding error flags are returned.
| System Service Descriptor Bit Field | Value | Description |
|---|---|---|
| 15:7 | MBOXADDR[10:2] | Mailbox address. See Table 2. |
| 6:0 | 78H | APB Write Debug service command |
The following table lists the APB Write Debug Service mailbox format.
| Offset | Length (bytes) | Parameter | Direction | Description |
|---|---|---|---|---|
| 0 | 4 | APBADDR[28:0] | Input | Specifies the target address and transfer size for the APB write and APB read operations. |
| 4 | 1 | APBDWSIZE[1:0] | Input | Specifies the data transfer size to be used by the APB write and APB read operations. |
| 8 | 2 | MAXBYTES[11:0] | Input | Calculates specified number of bytes from the fabric APB bus to the Shared Buffer. Number of bytes = MAXBYTES + 1. |
| 16 | 8 | MSSADDR | Input | Specifies the MSS RAM area where to copy from MAXBYTES+1 of data to the APB. All accesses are done with MSS User privileges. |