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KMA310 Datasheet(PDF) 13 Page - NXP Semiconductors |
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KMA310 Datasheet(HTML) 13 Page - NXP Semiconductors |
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13 / 71 page  NXP Semiconductors KMA310 Programmable angle sensor IC KMA310 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2019. All rights reserved. Product data sheet Rev. 3 — 27 February 2019 13 / 71 Table 13. DATA nibbles D0 to D3: angular value H.3 D0[1] D1 D2 D3[2] 12-bit value Angle/mode 0000 0000 0000 0000 0 initialization 0000 0000 0000 0001 1 0° : : : : : : 0111 0111 0111 0000 4088 αmax 0111 0111 0111 0001 4089 reserved 0111 0111 0111 0010 4090 diagnostic mode[3] 0111 0111 0111 : : reserved 0111 0111 0111 0111 4095 reserved [1] MSN. [2] LSN. [3] For detailed diagnostic information, the serial data communication can be enabled. For the 12-bit high-speed mode H.3, the clamping levels must be set to the correct values to comply with the SAE J2716 SENT specification. CLAMP_HIGH = 4088, CLAMP_LOW = 1. Otherwise angular values overwrite the reserved data range for diagnostic information. 8.10 Enhanced serial data communication Beside the normal message transmission, also a slow serial data communication is realized using bit 2 and bit 3 of the STATUS nibble. The slow channel message stretches over 18 consecutive SENT frames and contains sensor temperature, supply voltage, diagnostic/status information, and user-programmable messages. These messages comply with the enhanced serial data message format with 8-bit message ID and 12-bit message data described in the SAE J2716 SENT specification. Table 14 shows the serial message cycle that is constantly repeated when enhanced serial data communication is enabled. Table 14. Serial message schedule Message number in serial message cycle 8-bit message ID Definition Comment 1 01h diagnostic status code see Table 15 2 23h sensor temperature see Table 21 3 1Ch supply voltage see Table 20 4 03h sensor type see Table 17 5 29h sensor ID see Table 22 6 05h manufacturer code see Table 18 7 06h SENT revision see Table 19 8 01h diagnostic status code see Table 15 9 23h sensor temperature see Table 21 10 1Ch supply voltage see Table 20 11 90h OEM code 1 see Table 23 |
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