STOPC–Stop Continuous
SELFCAL–Offset and Gain Self Calibration
Description: Ends the continuous data output mode. Issue
after DRDY goes LOW.
Description: Starts the process of self calibration. The Offset
Calibration Register (OCR) and the Full-Scale Register (FSR)
are updated with new values after this operation.
Operands: None
Bytes:
1
Operands: None
Encoding: 0000 1111
Bytes:
1
Data Transfer Sequence:
Encoding: 1111 0000
Data Transfer Sequence:
DRDY
1111 0000
DIN
xxx
0000 1111
DIN
SELFOCAL–Offset Self Calibration
RREG–Read from Registers
Description: Starts the process of self-calibration for offset.
The Offset Calibration Register (OCR) is updated after this
operation.
Description: Output the data from up to 16 registers starting
with the register address specified as part of the instruction.
The number of registers read will be one plus the second byte
count. If the count exceeds the remaining registers, the ad-
dresses wrap back to the beginning.
Operands: None
Bytes:
1
Operands: r, n
Encoding: 1111 0001
Bytes:
2
Data Transfer Sequence:
Encoding: 0001 rrrr xxxx nnnn
Data Transfer Sequence:
Read Two Registers Starting from Register 01H (MUX)
1111 0001
DIN
0001 0001
0000 0001
• • •(1)
xxxx xxxx
MUX
xxxx xxxx
ACR
DIN
SELFGCAL–Gain Self Calibration
Description: Starts the process of self-calibration for gain.
TheFull-ScaleRegister(FSR)isupdatedwithnewvaluesafter
this operation.
DOUT
NOTE: (1) For wait time, refer to timing specification.
Operands: None
Bytes:
1
WREG–Write to Registers
Encoding: 1111 0010
Description: Write to the registers starting with the register
address specified as part of the instruction. The number of
registers that will be written is one plus the value of the second
byte.
Data Transfer Sequence:
1111 0010
DIN
Operands: r, n
Bytes:
2
Encoding: 0101 rrrr xxxx nnnn
Data Transfer Sequence:
Write Two Registers Starting from 04H (DIO)
DIN
0101 0100
xxxx 0001
Data for DIO
Data for DIR
ADS1242, 1243
19
SBAS235B
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TI [ TEXAS INSTRUMENTS ]
