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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MAX17843 датащи(PDF) 62 Page - Maxim Integrated Products |
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MAX17843 датащи(HTML) 62 Page - Maxim Integrated Products |
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62 / 131 page  READDEVICE Command The READDEVICE command returns a 16-bit word read from the specified register in the addressed device only. If the register address is not valid for the device, the com- mand is ignored. The command sequence is shown in Table 31. The command packet is forwarded up the daisy-chain until it reaches the addressed device. The addressed device overwrites the received fill bytes with the two bytes of reg- ister data and forwards the packet to the next device. The alive-counter byte is only incremented by the addressed device. A Manchester error immediately switches the data propagation from read mode to write (pass-through) mode, ensuring that the Manchester error is propagated through the daisy-chain and back to the host. Table 31. READDEVICE Sequencing *If alive-counter mode is enabled. HOST TX DEVICE RXL DEVICE TXU HOST RX Preamble Preamble Preamble Preamble {DA[4:0], 0b101} {DA[4:0], 0b101} {DA[4:0], 0b101} {DA[4:0], 0b101} [REG ADDR] [REG ADDR] [REG ADDR] [REG ADDR] [DC] [DC] [DATA LSB] [DATA LSB] [PEC] [PEC] [DATA MSB] [DATA MSB] [ALIVE]* [ALIVE]* [DC] [DC] [FD(1) C2h] [FD(1) C2h] [PEC] [PEC] [FD(1) D3h] [FD(1) D3h] [ALIVE]* [ALIVE]* Stop Stop Stop Stop 16 characters 16 characters 16 characters 16 characters MAX17843 12-Channel, High-Voltage Smart Sensor Data-Acquisition Interface www.maximintegrated.com Maxim Integrated │ 62 |
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