ZHCSRQ4 august 2023 TPSM8S6C24
PRODUCTION DATA
| CMD Address | 02h |
| Write Transaction: | Write Byte |
| Read Transaction: | Read Byte |
| Format: | Unsigned Binary (1 byte) |
| Phased: | No |
| NVM Back-up: | EEPROM |
| Updates: | On-the-fly |
The (02h) ON_OFF_CONFIG command configures the combination of enable pin input and serial bus commands needed to enable/disable power conversion. This includes how the unit responds when power is applied to PVIN.
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| R | R | R | RW | RW | RW | RW | RW |
| 0 | 0 | 0 | PU | CMD | CP | POLARITY | DELAY |
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Access | Reset | Description |
|---|---|---|---|---|
| 7:5 | Reserved | R | 000b | Not used and always set to 0. |
| 4 | PU | RW | NVM | 0b: Unit starts power conversion any time the input power is present regardless
of the state of the CONTROL pin. 1b: Act on CONTROL. (01h) OPERATION command to start/stop power conversion, or both. |
| 3 | CMD | RW | NVM | 0b: Ignore (01h) OPERATION
Command to start/stop power conversion. 1b: Act on (01h) OPERATION Command (and CONTROL pin if configured by CP) to start/stop power conversion. |
| 2 | CP | RW | NVM | 0b: Ignore CONTROL pin to start/stop power conversion. The UVLO function of the
EN/UVLO pin is not active when CONTROL pin is
ignored. 1b: Act on CONTROL pin (and (01h) OPERATION Command if configured by bit [3]) to start/stop power conversion. |
| 1 | POLARITY | RW | NVM | 0b: CONTROL pin has active low polarity. The UVLO function of the EN/UVLO pin
cannot be used when CONTROL has active low polarity. 1b: CONTROL pin has active high polarity. |
| 0 | DELAY | RW | NVM | 0b: When power conversion is commanded OFF by the CONTROL pin (must be configured
to respect the CONTROL pin as above), continue
regulating for the (64h) TOFF_DELAY
time, then ramp the output voltage to 0 V, in the
time defined by (65h) TOFF_FALL. 1b: When power conversion is commanded OFF by the CONTROL pin (must be configured to respect the CONTROL pin as above), stop power conversion immediately. |
For the purposes of (02h) ON_OFF_CONFIG, the device pin EN/UVLO is the CONTROL pin.
Attempts to write (02h) ON_OFF_CONFIG to any value other than those explicitly 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.