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STW5095 数据表(PDF) 41 Page - STMicroelectronics |
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STW5095 数据表(HTML) 41 Page - STMicroelectronics |
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41 / 69 page ![]() STw5095 5 Control Interface and Master Clock 41/69 5 Control Interface and Master Clock 5.1 Control interface I2C mode Note: CMOD pin tied to GND Figure 4. Control interface I2C format Figure 5. Control interface: I2C format timing WRITE SINGLE BYTE START DEVICE ADDRESS REG n ADDRESS REG n DATA IN ACK ACK ACK STOP WRITE MULTI BYTE START DEVICE ADDRESS REG n ADDRESS REG n DATA IN ACK ACK ACK STOP REG n+m DATA IN ACK m+1 data bytes CURRENT ADDR START DEVICE ADDRESS Current REG DATA OUT ACK NO ACK STOP READ SINGLE BYTE CURRENT ADDR START DEVICE ADDRESS Current REG DATA OUT ACK NO ACK STOP READ MULTI BYTE Curr REG+m DATA OUT ACK ACK ACK m+1 data bytes START DEVICE ADDRESS REG n ADDRESS ACK ACK START DEVICE ADDRESS REG n DATA OUT ACK NO ACK STOP RANDOM ADDR READ SINGLE BYTE RANDOM ADDR READ MULTI BYTE START DEVICE ADDRESS REG n ADDRESS ACK ACK START DEVICE ADDRESS NO ACK STOP REG n+m DATA OUT ACK ACK m+1 data bytes REG n DATA OUT ACK 00 1101 AS 1 00 1101 AS 1 001 101 AS 0 001 101AS 0 001 101AS 1 0011 01AS 1 001 101 AS 0 001 101 AS 0 (STO) tSU (STA) tSU (STA) tHD (DAT) tSU tHIGH tBUF (DAT) tHD tF tR tLOW (STA) tHD P S P Sr P=STOP S = START Sr = START repeated SDA SCLK |
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