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AS3956 데이터시트(PDF) 71 Page - ams AG |
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AS3956 데이터시트(HTML) 71 Page - ams AG |
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71 / 107 page ![]() ams Datasheet Page 71 [v1-11] 2018-Nov-14 Document Feedback AS3956 − Detailed Description Figure 71: Writing Register Data with Auto-Incrementing Address over I²C Reading Data from Addressable Registers (Register Read Mode) After the I²C slave address, the address of register to be read shall be provided, MSB first. Then one or more data bytes are transferred to SDA output, also MSB first. As in case of the write mode, also read mode supports auto-incrementing address. In case the register at the defined address does not exist, all 0 data is sent to SDA. In the following figure, an example for reading of single byte is given. Figure 72: Reading a Single Register over I²C 0 0 0 A 6 A 5 A 4 A 3 A 2 A 1 A 0 0 R 4 R 3 R 2 R 1 A C K P S Data is moved to Address <R4-R0> + n Slave address D 7 D 6 D 5 D 4 D 3 D 2 R 1 A C K D 1 D 0 D 3 D 2 D 1 D 0 A C K D 5 D 4 D 7 D 6 Data is moved to Address <R4-R0> + 0 Mode Byte SCL SDA A C K A 6 A 5 A 4 A 3 A 2 A 1 A 0 01 R 4 R 3 R 2 R 1 A C K P S Slave address A 6 A 5 A 4 A 3 A 2 A 1 R 0 A C K A 1 1 Mode Byte SCL SDA A C K D 7 D 6 D 5 D 4 D 3 D 2 D 1 D 0 Data N A K S Slave address 0 0 |
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