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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LP3913 датащи(PDF) 35 Page - Texas Instruments |
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LP3913 датащи(HTML) 35 Page - Texas Instruments |
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35 / 70 page  ack from slave w ack start msb Chip Address lsb msb Register Add lsb msb DATA lsb ack ack stop ack from slave ack from slave SCL start id = K¶60 w ack register addr = K¶10 GDWDDGGUK¶6A ack ack stop SDA rs msb Chip Address lsb r ack repeated start data from slave ack from master r id = K¶60 ack rs SCL SDA start id = K¶60 w ack addr = K¶00 DGGUHVVK¶$$GDWD ack ack stop ack from slave w ack start msb Chip Address lsb msb Register Add lsb msb DATA lsb ack ack stop ack from slave ack from slave 1 2 3 4 5 6 7 8 9 1 2 3 ... LP3913 www.ti.com SNVS489I – NOVEMBER 2006 – REVISED SEPTEMBER 2013 Figure 62. I2C Write Cycle w = write (I2C_SDA = “0”) r = read (I2C_SDA = “1”) ack = acknowledge (I2C_SDA pulled down by either master or slave) rs = repeated start id = LP3913 chip address : 60’h Register Read Cycle When a READ function is to be accomplished, a WRITE function must precede the READ function, as shown in the Read Cycle waveform. Figure 63. I2C Read Cycle Multi-byte I2C Command Sequence The LP3913’s I2C serial interface shall support Random register Multi-byte command sequencing: During a multi- byte write the Master sends the Start command followed by the Device address, which is sent only once, followed by the 8-bit register address, then 8 bits of data, The I2C slave must then accept the next random register address followed by 8 bits of data and continue this process until the master sends a valid stop condition. A Typical Multi-byte random register transfer is outlined below: Device Address, Register A Address, Ack, Register A Data, Ack Register M Address, Ack, Register M Data, Ack Register X Address, Ack, Register X Data, Ack Register Z Address, Ack, Register Z Data, Ack, Stop NOTE The PMIC is not required to see the I2C device address for each transaction. A, M, X, and Z are random numbers Copyright © 2006–2013, Texas Instruments Incorporated Submit Documentation Feedback 35 Product Folder Links: LP3913 |
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