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M64894 Datasheet(PDF) 5 Page - Mitsubishi Electric Semiconductor |
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M64894 Datasheet(HTML) 5 Page - Mitsubishi Electric Semiconductor |
5 / 8 page MITSUBISHI ICS (TV) M64894FP/GP SERIAL INPUT PLL FREQUENCY SYNTHESIZER FOR TV/VCR 5 METHOD OF SETTING DATA The input information to consit of 2 or data of 4bytes to lead to Chip Address is received in I2Cbus receiver. It shows a definition of bus protocol admitted in the following. 1_STA CA CB BB STO 2_STA CA D1 D2 STO 3_STA CA CB BB D1 D2 STO 4_STA CA D1 D2 CB BB STO STA : Start condition STO : Stop condition CA : Chip address CB : Control data byte BB : BandS.W. data byte D1 : Divider data byte D2 : Divider data byte The information of 5 bytes necessary for circuit operation is chip address and control data, bandS.W. data of 2 bytes and divider byte of 2 bytes. After the chip address input, 2 or data of 4 bytes are received. Function bit is contained the first and the third data byte to distinguish between divider data and control data, band data, and "0" goes ahead of divider data, and "1" goes ahead of control data, bandS.W. data. Write mode format Read mode format Byte MSB LSB Address Byte 11000 MA1 MA0 0 A Devider Byte1 0 N14 N13 N12 N11 N10 N9 N8 A Devider Byte2 N7 N6 N5 N4 N3 N2 N1 N0 A Control Byte1 1 CP T2 T1 T0 RSa RSb OS A Band SW Byte XXXX BS4 BS3 BS2 BS1 A Byte MSB LSB Address Byte 11000 MA1 MA0 1 A Status Byte1 POR FL X X X A2 A1 A0 A ADDRESS CA 0 ACK DATA ACK DATA ACK 1-7 8 9 1-7 8 9 1-7 8 9 SDA SCL S STA P STO |
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