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MMA685X 데이터시트(PDF) 20 Page - Freescale Semiconductor, Inc

부품명 MMA685X
상세설명  Single-Axis SPI Inertial Sensor
PDF  52 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MMA685X 데이터시트(HTML) 20 Page - Freescale Semiconductor, Inc

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Sensors
20
Freescale Semiconductor, Inc.
MMA685x
3.2
Customer Accessible Data Array CRC Verification
3.2.1
OTP Shadow Register Array CRC Verification
The OTP shadow register array is verified for errors using a 3-bit CRC. The CRC verification uses a generator polynomial of
g(x) = X 3+ X + 1, with a seed value = ‘111’. If a CRC error is detected in the OTP array, the IDE bit is set in the DEVSTAT register.
3.2.2
Writable Register CRC Verification
The writable registers in the data array are verified for errors using a 3-bit CRC. The CRC verification is enabled only when
the ENDINIT bit is set in the DEVCFG register. The CRC verification uses a generator polynomial of g(x) = X3 + X + 1, with a
seed value = ‘111’. If a CRC error is detected in the writable register array, the IDE bit is set in the DEVSTAT register.



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