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15
D6F-PH MEMS Differential pressure Sensor User’s Manual (A288)
7-3-3. CRC Calculation Control ( D049h )
Table 12. INT_CTRL
ADDR
MSB
D7
D6
D5
D4
D3
D2
D1
LSB
D0
D049h
CRC_EN
Write
Access
NONE
NONE
NONE
NONE
NONE
NONE
Host
&
MCU
NONE
Default
0
0
0
0
0
0
1
0
•
CRC_EN – CRC check calculation enable
(
See below for more information about the
CRC
)
•
0 = CRC check calculation disable
•
1 = CRC check calculation enable
Description of the CRC calculation
・
CRC Overview
The CRC is used as an error detection method in a data communication. Our flow sensor
use the CRC8 polynomial x^8 + x^5 + x^4 + 1. The following is an example of I2C access 2
byte read using CRC function.
Fig 9. Example of 2byte read with CRC
Fig.8 Example of 2byte read with CRC