Precautions - Epson S1C17001 Technical Manual

19 SPI

19.8 Precautions

• Always use 16-bit access commands to read and write to/from the SPI register (0x4320 to 0x4326). 32-bit and
8-bit access commands cannot be used to read and write to/from the SPI register.
• Do not access the SPI_CTL register (0x4326) while the SPBSY flag (D2/SPI_ST register) is set to 1 (while data
is being transferred).
∗ SPBSY: Transfer Busy Flag in the SPI Status (SPI_ST) Register (D2/0x4320)
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S1C17001 TECHNICAL MANUAL