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301020013 데이터시트(PDF) 47 Page - ams-OSRAM AG |
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301020013 데이터시트(HTML) 47 Page - ams-OSRAM AG |
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47 / 109 page ![]() Dragster Digital interface Datasheet • PUBLIC • Document Feedback DS000444 • v5-00 • 2025-Aug-29 47 / 109 / Figure 27: Writing operation 8.2.3 Reading operation To perform a read operation, the address for the register to be read, has to be written on register 0x15 (as data). After two and half SCLKs relative to the last MOSI bit (A7), the MISO line will send a leading ‘1’, followed by the 8-bit output data (LSB to MSB). It is only possible to read one register at a time, but it is possible to perform consecutive reads from the same segment and register. The raise of N_CS signal can be made right after the complete read of the last bit and SCLK should be placed on hold. Figure 28: Reading operation Time 0 LSB MSB 16 Bit of Serial Data Data Address D0 D1 ... D6 D7 A0 A1 ... A6 A7 Time 16SCLK N_CS SCLK MOSI D0 D1 D2 D3 D4 D5 D6 D7 A0 A1 A2 A3 A4 A5 A6 A7 3 SCLK MISO N_CS SCLK MOSI LSB MSB 16 Bit of Serial Data Data (Read Adress) Address D0 D1 ... D6 D7 A0 A1 ... A6 A7 Time 0 Time 16SCLK D0 D1 D2 D3 D4 D5 D6 D7 A0 A1 A2 A3 A4 A5 A6 A7 2.5 SCLK Read Back 8 SCLK '1' |
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