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X9421YS16IZ Datasheet(PDF) 11 Page - Intersil Corporation |
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X9421YS16IZ Datasheet(HTML) 11 Page - Intersil Corporation |
11 / 21 page 11 FN8196.1 September 23, 2005 Instruction Format Notes: (1) “A0”: stands for the device addresses sent by the master. (2) WPx refers to wiper position data in the Wiper Counter Register “I”: stands for the increment operation, SI held HIGH during active SCK phase (high). (3) “D”: stands for the decrement operation, SI held LOW during active SCK phase (high). Read Wiper Counter Register (WCR) Write Wiper Counter Register (WCR) Read Data Register (DR) Read the contents of the Register pointed to by R1 - R0. Write Data Register (DR) Write a new value to the Register pointed to by R1 - R0. Transfer Data Register (DR) to Wiper Counter Register (WCR) Transfer the contents of the Register pointed to by R1 - R0 to the WCR. CS Falling Edge device type identifier device addresses instruction opcode wiper position (sent by X9421 on SO) CS Rising Edge 010 111 0 A 0 1 0010 000 00 W P 5 W P 4 W P 3 W P 2 W P 1 W P 0 CS Falling Edge device type identifier device addresses instruction opcode Data Byte (sent by Host on SI) CS Rising Edge 010 111 0 A 0 1 0100 000 00 W P 5 W P 4 W P 3 W P 2 W P 1 W P 0 CS Falling Edge device type identifier device addresses instruction opcode register addresses Data Byte (sent by X9421 on SO) CS Rising Edge 01011 10 A 0 1011 R 1 R 0 0000 W P 5 W P 4 W P 3 W P 2 W P 1 W P 0 CS Falling Edge device type identifier device addresses instruction opcode register addresses Data Byte (sent by host on SI) CS Rising Edge HIGH-VOLTAGE WRITE CYCLE 01011 10 A 0 110 0 R 1 R 0 00 00 W P 5 W P 4 W P 3 W P 2 W P 1 W P 0 CS Falling Edge device type identifier device addresses instruction opcode register addresses CS Rising Edge 0101 110 A 0 11 01 R 1 R 0 00 X9421 |
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