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DSP32 Datasheet(PDF) 9 Page - List of Unclassifed Manufacturers |
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DSP32 Datasheet(HTML) 9 Page - List of Unclassifed Manufacturers |
9 / 14 page www.sensirion.com Version 0.8 – January 2017 9/14 5.3.4 Read Product Identifier During assembly and start-up of the machine it might be required to check some basic parameters in the sensor - for example to check if the correct sensor is integrated. The product identifier and serial number can be read out after sending a sequence of two commands. Command Command code Consecutive read Description Read product identifier 0x367C 0xE102 Byte1: Product number [31:24] Byte2: Product number [23:16] Byte3: CRC Byte4: Product number [15:8] Byte5: Product number [7:0] Byte6: CRC Byte7: Serial number [63:56] Byte8: Serial number [55:48] Byte9: CRC Byte10: Serial number [47:40] Byte11: Serial number [39:32] Byte12: CRC Byte13: Serial number [31:24] Byte14: Serial number [23:16] Byte15: CRC Byte16: Serial number [15:8] Byte17: Serial number [7:0] Byte18: CRC Note that both commands need to be preceded with an I2C write header (I2C address + W). The second command returns: - 32 bit unique product and revision number. The number is listed in the table below. Note that the last 8 bits are the revision number and are subject to change as long as the datasheet is preliminary. - 64 bit unique serial number Product Product number SDP31 0x03010188 SDP32 0x03010283 5.3.5 Soft Reset Command I2C address + W bit + command code (Hex) Consecutive read Description General call reset 0x0006 NA This sequence resets the sensor with a separate reset block, which is as much as possible detached from the rest of the system on chip. Note that the I2C address is 0x00, which is the general call address, and that the command is 8 bit. The reset is implemented according to the I2C specification. After the reset command the sensor will take maximum 20ms to reset. During this time the sensor will not acknowledge its address nor accept commands. |
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