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M16C/29 датащи(PDF) 279 Page - Renesas Technology Corp |
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M16C/29 датащи(HTML) 279 Page - Renesas Technology Corp |
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279 / 499 page ![]() 16. MULTI-MASTER I2C bus INTERFACE p u o r G 9 2 / C 6 1 M page 255 8 5 4 f o 7 0 0 2 , 0 3 .r a M 2 1 . 1 . v e R 2 1 1 0 - 1 0 1 0 B 9 0 J E R Item Function Format Based on Philips I2C bus standard: 7-bit addressing format High-speed clock mode Standard clock mode Communication mode Based on Philips I2C bus standard: Master transmit Master receive Slave transmit Slave receive SCL clock frequency 16.1kHz to 400kHz (at VIIC (1)= 4MHz) I/O pin Serial data line SDAMM(SDA) Serial clock line SDLMM(SCL) 16. Multi-master I2C bus Interface The multi-master I2C bus interface is a serial communication circuit based on Philips I2C bus data transfer format, equipped with arbitration lost detection and synchronous functions. Figure 16.1 shows a block diagram of the multi-master I2C bus interface and Table 16.1 lists the multi-master I2C bus interface func- tions. The multi-master I2C bus interface consists of the S0D0 register, the S00 register, the S20 register, the S3D0 register, the S4D0 register, the S10 register, the S2D0 register and other control circuits. Figures 16.2 to 16.8 show the registers associated with the multi-master I2C bus. Table 16.1 Multi-master I2C bus interface functions NOTE: 1. VIIC=I2C system clock |
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