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BU9929FV Datasheet(PDF) 7 Page - Rohm |
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BU9929FV Datasheet(HTML) 7 Page - Rohm |
7 / 12 page BU9929FV Multimedia ICs 7/11 1. Data write mode St SLAVE ADDRESS W A COMMAND BYTE A WRITE DATA 1 PION7 − PION0 PIO15 − PIO8 AA Sp WRITE DATA 2 Command register : At reset, D0 to D7 are ”0”. D7 SHT DWN D6 INT SEL D5 DOUT SEL D4 OUT ON D3 DIR ON D2 BYTE SEL D1 EDGE SEL D0 DET ON D7 : Shut Down mode 0 : Shut down mode off (Normal operation mode) 1 : Shut down mode on D6 : INT output method choice 0 : LOW output 1 : Output of LOW pulse equivalent for one period of CLK D5 : Detection result output choice 0 : Serial output. INT pin is also valid. 1 : Serial output (I 2C MASTER function) off. Only INT pin is valid. D4 : Output port writing set 0 : Writing invalid 1 : Writing valid. But, a port, which is indicated as input, is invalid. Following Write data 2byte-0 : “L” output, 1 : “H” output D3 : I / O direction set 0 : Direction set invalid 1 : Direction set valid Following Write data 2byte-0 : input, 1 : output D2 : Watching object input choice 0 : PION0 to PION7 1 : PION8 to PIO15 D1 : Change detection mode 0 : Falling edge 1 : Both rising and falling edge D0 : Input port condition watching mode 0 : Invalid 1 : Valid |
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