JAJSMF5B september 2022 – june 2023 TPS25990
PRODUCTION DATA
ALERT_MASK is a manufacturer-specific command for configuring or reading the events which are allowed to assert the SMBA# signal.
This command uses the PMBus® read or write word protocol.
Each bit corresponds to one of the analog or digital faults or warnings that would normally result in SMBA# being asserted. When the corresponding bit is high, that condition does not cause SMBA# to be asserted. If that condition occurs, the registers where that condition is captured are still updated (STATUS registers and Blackbox) and the device ON/OFF control is still active. The details of this register are shown in Table 9-69.
| Bit | Name | Value | Description | Default | Access |
|---|---|---|---|---|---|
15:9 | Reserved | 0000000 | Reserved | 0000000 | Read/Write |
8 | UNKNOWN | 1 | UNKNOWN status bit doesn’t assert SMBA# | 1 | |
0 | UNKNOWN status bit asserts SMBA# | ||||
7 | PGOODB | 1 | PGOOD falling doesn’t assert SMBA# | 0 | |
0 | PGOOD falling asserts SMBA# | ||||
6 | GLBL_FLT | 1 | GLBL_FLT doesn’t assert SMBA# | 0 | |
0 | GLBL_FLT asserts SMBA# | ||||
5 | MFR_STATUS | 1 | Active bits set in STATUS_MFR_SPECIFIC register don’t assert SMBA# | 0 | |
0 | Active bits set in STATUS_MFR_SPECIFIC register assert SMBA# | ||||
4 | STATUS_TEMP | 1 | Active bits set in STATUS_TEMP register don’t assert SMBA# | 0 | |
0 | Active bits set in STATUS_TEMP register assert SMBA# | ||||
3 | STATUS_OUT | 1 | Active bits set in STATUS_OUT register don’t assert SMBA# | 0 | |
0 | Active bits set in STATUS_OUT register assert SMBA# | ||||
2 | STATUS_IN | 1 | Active bits set in STATUS_INPUT register don’t assert SMBA# | 0 | |
0 | Active bits set in STATUS_INPUT register assert SMBA# | ||||
1 | CML_ERR | 1 | Active bits set in STATUS_CML register don’t assert SMBA# | 0 | |
0 | Active bits set in STATUS_CML register assert SMBA# | ||||
0 | STATUS_IOUT | 1 | Active bits set in STATUS_IOUT register don’t assert SMBA# | 0 | |
0 | Active bits set in STATUS_IOUT register assert SMBA# |
A write command to this register should be preceded by the MFR_WRITE_PROTECT command to unlock the device first to prevent accidental accidental/spurious writes.
GLBL_FLT is a logical OR of the status bits unmasked using the FAULT_MASK register.