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3886 Datasheet(PDF) 216 Page - Renesas Technology Corp |
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3886 Datasheet(HTML) 216 Page - Renesas Technology Corp |
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216 / 380 page  3886 Group User’s Manual APPLICATION 2-99 2.5 Multi-master I2C-BUS interface ➂ Reception of RESTART condition and slave address After receiving a slave address, prepare transmission data. Judgment whether receiving data or transmitting is required, because the mode is automatically switched between the receive mode and the transmit mode depending on the R/W bit of the received slave address. Accordingly, judge whether read or write referring the slave address comparison flag (AAS bit; bit 2 of address 001416). Fig. 2.5.28 Reception process of RESTART condition and slave address 1 (transmitted) End S0(address 1216) ← lower data Error end PIN (address 1416), bit 4 ? 1 (stop condition) 0 (lower data received) 3 S1(address 1416) ¨ 000100002 TRX (address 1416), bit 6 ? 0 (received) End Slave receive processing, etc. • Judgment of bus hold • Judgment of transmit/receive mode • Slave receive mode set • Output lower data write to I2C data shift register |
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