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AS3956 датащи(PDF) 70 Page - ams AG |
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AS3956 датащи(HTML) 70 Page - ams AG |
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70 / 107 page ![]() Page 70 ams Datasheet Document Feedback [v1-11] 2018-Nov-14 AS3956 − Detailed Description I²C Slave Address The I²C slave address is composed of 7 bits where the first 4 MSBs are fixed and the last 3 LSBs are programmable. Figure 69: I²C Slave Address The value of bits A2:A0 can be set in the Configuration Byte IC_CFG0. Writing Data to Addressable Registers (Register Write Mode) Following figures show cases of writing a single byte and writing multiple bytes with auto-incrementing address. After the I²C slave address, the initial register address follows. Then one or more data bytes are transferred from the I²C, MSB first. The data byte is written in register on falling edge of its last clock. Figure 70: Writing a Single Register over I²C B6 B5 B4 B3 B2 B1 B0 I²C Slave Address 1 0 1 0 A2 A1 A0 0 0 0 0 A 6 A 5 A 4 A 3 A 2 A 1 A 0 R 4 R 3 R 2 R 1 A C K P S Slave address D 7 D 6 D 5 D 4 D 3 D 2 R 1 A C K D 1 D 0 Data Mode Byte SCL SDA A C K |
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