JAJSGG2C October 2018 – June 2019 ADS125H02
PRODUCTION DATA.
Commands are used to read conversion data, control the device, and read and write register data. Table 16 provides a list of commands and the corresponding command byte sequence. Only send the commands that are listed in Table 16.
The column labeled CSx shows the use of CS1 or CS2 for the particular command type. Most commands use CS1. Only activate CS2 to access register data at address 10h and above and to lock register data at address 10h and above. See the Chip-Select Pins (CS1 and CS2) section for details of chip-select operation.
MNEMONIC | CSx | DESCRIPTION | BYTE 1 | BYTE 2(2) | BYTE 3 | BYTE 4 |
---|---|---|---|---|---|---|
CONTROL COMMANDS | ||||||
NOP | CS1 or CS2 | No operation | 00h | Arbitrary | CRC-2 | 00h |
RESET | CS1 | Reset | 06h | Arbitrary | CRC-2 | 00h |
START | CS1 | Start conversion | 08h | Arbitrary | CRC-2 | 00h |
STOP | CS1 | Stop conversion | 0Ah | Arbitrary | CRC-2 | 00h |
READ DATA COMMAND | ||||||
RDATA | CS1 | Read conversion data | 12h | Arbitrary | CRC-2 | 00h |
CALIBRATION COMMANDS | ||||||
OFSCAL | CS1 | Offset calibration | 16h | Arbitrary | CRC-2 | 00h |
GANCAL | CS1 | Gain calibration | 17h | Arbitrary | CRC-2 | 00h |
REGISTER COMMANDS | ||||||
RREG | CS1 or CS2 | Read register data | 20h + rrh(1) | Arbitrary | CRC-2 | 00h |
WREG | CS1 or CS2 | Write register data | 40h + rrh(1) | Register data | CRC-2 | 00h |
PROTECTION COMMANDS | ||||||
LOCK | CS1 or CS2 | Register data lock | F2h | Arbitrary | CRC-2 | 00h |
UNLOCK | CS1 or CS2 | Register data unlock | F5h | Arbitrary | CRC-2 | 00h |