ZHCSQY3 march 2023 TPS546D24S
PRODUCTION DATA
| CMD Address | 20h |
| Write Transaction: | Write Byte |
| Read Transaction: | Read Byte |
| Format: | Unsigned Binary (1 byte) |
| Phased: | No |
| NVM Back-up: | EEPROM |
| Updates: | Conversion Disabled: on-the-fly, Conversion Enabled: Read Only |
The data byte for the VOUT_MODE command is one byte that consists of a three bit Mode and a five bit Parameter as shown in Figure 7-24. The three bit Mode sets whether the device uses the ULINEAR16, Half-precision IEEE 754 floating point, or VID or DIRECT modes for output voltage related commands. The five bit Parameter provides more information about the selected mode, such as the ULINEAR16 Exponent or which manufacturer's VID codes are being used.
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| RW | R | R | RW | RW | RW | RW | RW |
| REL | MODE | PARAMETER | |||||
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Access | Reset | Description |
|---|---|---|---|---|
| 7 | REL | RW | NVM | 0b: Absolute Data Format 1b: Relative Data Format |
| 6:5 | MODE | R | 00b | 00b: Linear Format (ULINEAR16, SLINEAR16) Other: Unsuported/Invalid |
| 4:0 | PARAMETER | RW | NVM | MODE = 00b (Linear Format): Specifies the exponent “N” to use with output voltage related commands, in two’s complement format. Supported exponent values in the linear mode range from -4 (62.5 mV/LSB) to -12 (0.244 mV/LSB). Refer to the following text for more information. |
Changing VOUT_MODE
Changing VOUT_MODE will force an update to the values of many VOUT related commands to conform to the updated VOUT_MODE value including Relative versus Absolute mode and the linear Exponent value. When programming VOUT_MODE in conjunction with other VOUT related commands, VOUT related commands will be interpreted with the current VOUT_MODE value and converted if VOUT_MODE is later changed.