ZHCSRQ4 august 2023 TPSM8S6C24
PRODUCTION DATA
| CMD Address | 01h |
| Write Transaction: | Write Byte |
| Read Transaction: | Read Byte |
| Format: | Unsigned Binary (1 byte) |
| Phased: | No |
| NVM Back-up: | No |
| Updates: | On-the-fly |
The (01h) OPERATION command is used to enable or disable power conversion, in conjunction input from the enable pins, according to the configuration of the (02h) ON_OFF_CONFIG command. It is also used to set the output voltage to the upper or lower MARGIN levels, and select soft-stop.
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| RW | RW | RW | RW | RW | RW | RW | R |
| ON_OFF | SOFT_OFF | MARGIN | TRANSITION | 0 | |||
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Access | Reset | Description |
|---|---|---|---|---|
| 7 | ON_ OFF | RW | 0b | Enable/disable power conversion
when the (02h) ON_OFF_CONFIG command is configured
to require input from the CMD bit for output
control. Note that there can be several other
requirements that must be satisfied before the
power conversion can begin (for example, input
voltages above UVLO thresholds, enable pins high
if required by (02h) ON_OFF_CONFIG and so forth). 0b: Disable power conversion. 1b: Enable power conversion and enable Ignore Faults on MARGIN. |
| 6 | SOFT_ OFF | RW | 0b | This bit controls the turn-off
profile when (02h) ON_OFF_CONFIG is configured to
require input from the CMD bit for output voltage
control and OPERATION bit 7 transitions from 1b to
0b is ignored when bit 7 is 1b. 0b: Immediate Off. Power conversion stops immediately and the power stage is forced to a high-Z state. 1b: Soft Off. Power conversion continues for the TOFF_ DELAY time, then the output voltage is ramped down to 0 V at a slew rate according to TOFF_ FALL. After the output voltage reaches 0 V, power conversions stops. |
| 5:2 | MARGIN | RW | 0000b | Sets the margin state. 0000b, 0001b, 0010b: Margin OFF. Output voltage target is (21h) VOUT_COMMAND, OV/UV faults behave normally per their respective fault response settings 0. 0101b: Margin Low (Ignore Fault if bit 7 is 1b). Output voltage target is VOUT_MARGIN_LOW. OV/UV faults are ignored and do not trigger shut-down or STATUS updates. 0110b: Margin Low (Act on Fault). Output voltage target is (26h) VOUT_MARGIN_LOW. OV/UV faults trigger per their respective fault response settings. 1001b: Margin High (Ignore Fault). Output voltage target is VOUT_MARGIN_HIGH. OV/UV trigger are ignored and do not trigger shutdown or STATUS update. 1010b: Margin High (Act on Fault). Output voltage target is (25h) VOUT_MARGIN_HIGH. OV/UV trigger per their respective fault response settings. Other: Invalid/Unsupported data |
| 1 | TRANSITION | R | 0b | Not used and always set to 0. |
| 0 | Reserved | R | 0b | Not used and always set to 0. |
Attempts to write (01h) OPERATION to any value other than those listed above will be considered invalid/unsupported data and cause the TPSM8S6C24 to respond by flagging the appropriate status bits, and notifying the host according to the PMBus 1.3.1 Part II specification, section 10.9.3.