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7220 Datasheet(PDF) 199 Page - Renesas Technology Corp |
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7220 Datasheet(HTML) 199 Page - Renesas Technology Corp |
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199 / 303 page  5-26 APPLICATION 5.5 Example of I2C-BUS control by software (M37220M3-XXXSP/FP) 7220 Group User’s Manual 5.5 Example of I2C-BUS control by software (M37220M3-XXXSP/FP) Althogh, the M37220M3-XXXSP/FP has no multi-master I2C-BUS interface, it can control single-master I2C- BUS by software. Most TV systems can be controlled in this way. This paragraph explains transmit/receive control example of a single-chip color TV signal processor (M52340SP) adaptable to the I2C-BUS interface. 5.5.1 Specifications q Single-chip color TV signal processor required: M52340SP q Number of transfer bits: 8 bits q Data format: addressing format q Pins required: P21, P20 q Direction of data transfer: MSB first 5.5.2 Connection example Fig. 5.5.1 Connection example P20/SCLK P21/SOUT M37220M3-XXXSP/FP <Master> M52340SP <Slave> SCL SDA SCL SDA SCL SDA : Serial clock : Serial data |
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