ZHCSOF7B september 2022 – june 2023 TPS25990
PRODUCTION DATA
GPDAC1 is a manufacturer-specific command that allows configuring or reading a 6-bit data driving a general purpose DAC to generate a constant current output at PIN-6 (DAC1). This command uses the PMBus® DIRECT format. When reading and writing to this register, use the coefficients shown in Table 8-67, Equation 19, and Equation 20.
This command uses the PMBus® read or write byte protocol.
The details of this register are shown in Table 9-69.
| Bit | Name | Description | Minimum Value | Maximum Value | Default Value | Access |
|---|---|---|---|---|---|---|
7:0 | GPDAC1 | General purpose DAC output-1 | 0x00h (6 µA) | 0x3Fh (53.25 µA) | 0x00h (6 µA) | Read/Write |
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.
Writing 1xxxxxxb in this register disconnects the DAC output from the DAC1 pin making the pin high-impedance and sink no current.