Sony CXD5602 User Manual page 292

I2C0
I2C1
SPI
Within the main loop, when a task of the I2C is called up for example, the I2C task will be executed as long as
the sequencer number assigned to the I2C task is active.
3.9.9.9 MATH_PROC Processing
The SCU internal sequencer writes data to the MATH_PROC when there is a request from the MATH_PROC.
Then, when the data is output from the MATH_PROC, the processing takes place in accordance with the internal
setting.
The presence of a request is judged by reading out the MATH_PROC_EXE register within the
SCU_MATH_PROC_REG by the internal sequencer.
The requests from the MATH_PROC occur under the following conditions. These are all controlled from the
settings of the CPU.

SEQ0 or SEQ1 (decimation filter is used)
When any of the following conditions are "true"
(1) Any of the OFST_GAIN_EN* in the OFST_GAIN_EN{0x5070} of the MATHID within the SCU_REG
is set to "1"
(2) Any from among MATHF_EN0, MAYHF_EN1, and MATHF_EN2 in the MATHFUNC_SEL{0x508c}
of the MATHID within the SCU_REG is set
(3) Any from among N1, N2, and N3 in the DECIMATION_PARAM0/1{0x5084/0x5088} of the MATHID
within the SCU_REG is set to 9 or lower

SEQ2 to SEQ9 (Normal partition)
When one of the two conditions is "true"
(1) Any of the OFST_GAIN_EN* in the OFST_GAIN_EN{0x5070} of the MATHID within the SCU_REG
is set to "1"
(2) Any from among MATHF_EN0, MAYHF_EN1, and MATHF_EN2 in the MATHFUNC_SEL{0x508c}
of the MATHID setting within the SCU_REG is set
When FIFO writing happens because of the event, the internal sequencer writes to the FIFO with the highest
priority.
Figure SCU (Sensor Control Unit)-78 Sequencer Data Flow
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MATH_PROC
Sequencer
Processing
CXD5602 User Manual
FIFO