31.5.3 MUTEX REGISTER
Note: If LOCK’d when a reset occurs,
hardware reverts ownership to OWNER=00 and LOCK=0 after the controller cleans up the
operation.
| 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: | MUTEX |
| Offset: | 0x8 |
| Reset: | 0x00000000 |
| Property: | R/W |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| Access | |||||||||
| Reset |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| Access | |||||||||
| Reset |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| Access | |||||||||
| Reset |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| OWNER[1:0] | LOCK | ||||||||
| Access | R/W | R/W | R/W | ||||||
| Reset | 0 | 0 | 0 | ||||||
Bits 2:1 – OWNER[1:0] Note: Only the HSM can write its owner ID. Only System (non-HSM) can write its owner ID.
| Value | Name | Description |
|---|---|---|
| 3 | HSMFORCE | The HSM owns the FCW (by forcefully taking it from the System if necessary) |
| 2 | HSM | The HSM owns the FCW |
| 1 | SYSTEM | The System owns the FCW |
| 0 | NONE | No Owner - always 0 if LOCK=0 |
| 1 | SYSTEM | The System owns the FCW |
| 0 | NONE | No Owner - always 0 if LOCK=0 |
Bit 0 – LOCK Note: This bit can only be cleared by the owner.
| Value | Name | Description |
|---|---|---|
| 1 | LOCK | FCW is locked by owner |
| 0 | UNLOCK | FCW is not locked |