ZHCSQY3 march 2023 TPS546D24S
PRODUCTION DATA
| CMD Address | 38h |
| Write Transaction: | Write Word |
| Read Transaction: | Read Word |
| Format: | SLINEAR11, per CAPABILITY |
| Phased: | No |
| NVM Back-up: | EEPROM |
| Updates: | On-the-fly |
(38h) IOUT_CAL_GAIN is used to trim the gain of the output current reported by the READ_IOUT command. The value is a unitless gain factor applied to the internally sensed current measurement. It defaults to a value of 1.
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| RW | RW | RW | RW | RW | RW | RW | RW |
| IOCG_EXP | IOCG_MAN | ||||||
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| RW | RW | RW | RW | RW | RW | RW | RW |
| IOCG_MAN | |||||||
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Access | Reset | Description |
|---|---|---|---|---|
| 15:11 | IOCG_ EXP | RW | 11001b | Linear format, two’s complement exponent |
| 10:0 | IOCG_ MAN | RW | NVM | Linear format, two’s complement mantissa |
Attempts to write (38h) IOUT_CAL_GAIN to any value outside those specified as valid will be considered invalid/unsupported data and cause the TPS546D24S 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.
Command Resolution and NVM Store/Restore Behavior
The (38h) IOUT_CAL_GAIN command is implemented using the TPS546D24S internal telemetry system. As a result, the value of this command can be programmed with very high resolution using the linear format. However, the TPS546D24S provides only limited NVM-backed options for this command. Following a power-cycle or NVM Store/Restore operation, the value will be rounded to the nearest 1/64 with a maximum supported value of 1.984 (1 63/64).