JAJSOX0B March 2024 – November 2024 ADS127L18
PRODMIX
STATUS_DP is an optional header byte prefixed to the conversion data. STATUS_DP indicates the channel number of the data as well as status indicators. Figure 8-51 and Table 8-24 show the field descriptions. The STATUS_DP header is enabled by setting the DP_STAT_EN bit of the DP_CFG1 register.
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
PWR_FLAG | ERR_FLAG | MOD_FLAG | RPT_DATA | PWDN | CH_ID[2:0] |
Bit | Field | Description |
---|---|---|
7 | PWR_FLAG | Power flag. This flag is the OR of the ALV_FLAG and POR_FLAG from the SPI STATUS register, which indicates device power-up. If desired, clear the PWR_FLAG by clearing ALV_FLAG and POR_FLAG. Clearing the PWR_FLAG is not necessary for device operation. This bit is always 0b in hardware programming mode. 0b = No power supply event from flag last cleared 1b = Power-supply event |
6 | ERR_FLAG | Error flag. This bit is the inversion of the ERROR pin output. This bit is always 0b in hardware programming mode. See the Error Pin section for more details. 0b = No error 1b = Error |
5 | MOD_FLAG | Modulator saturation flag. This bit indicates modulator saturation during the conversion cycle. The flag is updated at the completion of each conversion. 0b = No modulator saturation 1b = Modulator saturation |
4 | RPT_DATA | Repeat data flag. This bit indicates whether data are new or repeated. Repeated data are caused by different data rates between channels with slower channels repeating the original data between updates of faster channels. Repeated data are also caused by the repeat-data mode, programmed by the DP_DAISY bit of the DP_CFG1 register. This bit is always 0b in hardware programming mode. 0b = Data are new 1b = Data are repeated |
3 | PWDN | Power down flag. This bit indicates power down or standby mode. 0b = Channel in power down or standby mode 1b = Normal operation |
2:0 | CH_ID[2:0] | Channel identification
number. These bits show the channel number corresponding to the data. 000b = Channel 0 001b = Channel 1 010b = Channel 2 011b = Channel 3 100b = Channel 4 (ADS127L18 only) 101b = Channel 5 (ADS127L18 only) 110b = Channel 6 (ADS127L18 only) 111b = Channel 7 (ADS127L18 only) |