14.11.4 (Mode=Watermark) - Region Control Register
This register is part of a register group (composed of RCTRL, RSTATUS[A,B,C]) that is repeated IDAU_REGION_NUM times. Register group x controls and returns status of the IDAU region x.
| Symbol | Description | Symbol | Description | Symbol | Description |
|---|---|---|---|---|---|
| R | Readable bit | HC | Cleared by Hardware | (Grey cell) | Unimplemented |
| W | Writable bit | HS | Set by Hardware | X | Bit is unknown at Reset |
| K | Write to clear | S | Software settable bit | — | — |
| Name: | RCTRL |
| Offset: | 0x1000 |
| Reset: | 0x00000000 |
| Property: | PAC Write-Protection |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| CMD[7:0] | |||||||||
| Access | W | W | W | W | W | W | W | W | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| ARG[23:16] | |||||||||
| Access | W | W | W | W | W | W | W | W | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| ARG[15:8] | |||||||||
| Access | W | W | W | W | W | W | W | W | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| ARG[7:0] | |||||||||
| Access | W | W | W | W | W | W | W | W | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Bits 31:24 – CMD[7:0] Command
The commands below apply to IDAU region types suffixed _W. Illegal commands are reported to STATUSB.CFGERR.
| Value | Description |
|---|---|
| 0x0 - 0x5B | Reserved |
| 0x5C | Write IDAU region x Size (RSTATUSB[x].SIZE=ARG) (WRSZ) |
| 0x5D - 0xFF | Reserved |
Bits 23:0 – ARG[23:0] Command Argument (Watermark)
Argument defines the watermark in the associated main region that splits it in 2 distinct IDAU regions. This watermark is an offset in Bytes from the top address of the MAIN region equal to ARG.2^RSTATUSA[x].GRAN Bytes. ARG must be strictly lower than 2^(RSTATUSA[x].MAXSZ). The size of the IDAU region is ARG times the size of a single block of 2^RSTATUSA[x].GRAN Bytes .