Sony CXD5602 User Manual page 247

Figure SCU (Sensor Control Unit)-53 Memory Mapping within the SCU as seen from the Upper CPUs
The Reserved area within this Figure is writing-invalid (no error response) and "0" read during readout (no
error response).
The data storage region including the FIFO RAM (32 KByte) and FIFO RAM (8 KByte) is 40 KByte. Refer to
Section 3.9.8 for details.
The FIFO (4 KByte) is the port for data writing and readout. Refer to Table SCU (Sensor Control Unit)-103 for
details.
The FIFO REG (8 KByte) handles controls around the FIFO. Refer to Section 3.9.12.10 for details.
The SCU_REG (4 KByte) is the control register. Refer to Section 3.9.12.3 for details.
The DRAM (2 KByte) is used as the SCU_RAM. Refer to Section 3.9.12.11 for details.
The IRAM (8 KByte) is used as the SEQ_IRAM. This stores the control firmware of the internal sequencer.
Figure SCU (Sensor Control Unit)-54 shows the Memory Map as seen from the internal sequencer of the SCU.
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CXD5602 User Manual