SLVSH95 July 2024 TPS546C25
ADVANCE INFORMATION
| CMD Address | 80h |
| Write Transaction: | Write Byte |
| Read Transaction: | Read Byte |
| Format: | Unsigned Binary (1 byte) |
| NVM Back-up: | Yes |
| Updates: | On-the-fly |
The STATUS_MFR_SPECIFIC command returns one data byte with contents regarding manufacturer defined status as follows. All supported bits may be cleared either by (03h) CLEAR_FAULTS, turning on the output through the mechanism programmed into (02h) ON_OFF_CONFIG, or individually by writing 1b to the STATUS_MFR_SPECIFIC register in their position, per the PMBus 1.3.1 Part II specification section 10.2.3.
None of these bits is affected by the state of SMBALERT_MASK. However, if the corresponding fault/warning disable bits in the FAULT_CTRL register is set, then the corresponding status bits will also be blocked in addition to blocking the response from that fault..
Return to Supported PMBus Commands.
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| R | R/W1C | R/W1C | R/W1C | R | R | R/W1C | R/W1C |
| DCM | OTF_BG | PS_FLT | PS_COMM_WRN | 0 | 0 | PS_OT | PS_UV |
| LEGEND: R/W1C = Read/Write 1 to clear; R = Read only |
| Bit | Field | Access | Reset | Description |
|---|---|---|---|---|
| 7 | DCM | R | 0b | LIVE (unlatched) status bit. This bit is set upon detection of DCM operation.
This bit does not trigger SMB_ALERT# and does not assert the MFR bit in STATUS_WORD
or the OTH bit in STATUS_BYTE. 0b: The device is NOT operating in DCM. 1b: The device is operating in DCM. |
| 6 | OTF_BG | R/W1C | 0b | 0b: Latched flag indicating the controller fixed thermal shutdown has NOT
occurred. 1b: Latched flag indicating the controller fixed thermal shutdown has occurred. |
| 5 | PS_FLT | R/W1C | 0b | 0b: Latched flag indicating a power-stage fault has NOT occured. The faults which can set this bit are:
|
| 4 | PS_COMM_WRN | R/W1C | 0b | 0b: Latched flag indicating a power-stage communication error has
NOT occured. 1b: Latched flag indicating a power-stage communication error has occured. |
| 3:2 | Not supported | R | 00b | Not supported and always set to 0. |
| 1 | PS_OT | R/W1C | 0b | 0b: Latched flag indicating the power-stage fixed thermal shutdown has NOT
occurred. 1b: Latched flag indicating the power-stage fixed thermal shutdown has occurred. |
| 0 | PS_UV | R/W1C | 0b | 0b: Live flag indicating a power-stage undervoltage fault has NOT occurred. 1b: Live flag indicating a power-stage undervoltage fault has occurred. |