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MAX17843 датащи(PDF) 87 Page - Maxim Integrated Products

номер детали MAX17843
подробное описание детали  12-Channel, High-Voltage Smart Sensor Data-Acquisition Interface
PDF  131 Pages
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производитель  MAXIM [Maxim Integrated Products]
домашняя страница  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX17843 датащи(HTML) 87 Page - Maxim Integrated Products

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Calibration ROM Diagnostic
The CRC for the calibration ROM can be independently
computed by the host. Any mismatch between the calcu-
lated CRC and the factory CRC indicates that the measure-
ment accuracy may be compromised. The factory CRC,
ROMCRC[7:0], is stored in the ID2 register.
The CRC for the calibration ROM uses the same poly-
nomial as the CRC-8 PEC byte and is performed on
addresses C0h to CAh, CFh, and D0 to D4h. ID2 is pro-
cessed in the order shown in Table 46, least-significant
bit first. Registers CAL11, CAL12, CAL13, and CAL14
are excluded from the calculation. Also, certain ROM bits
must be zeroed prior to performing the calculation using
the bit-wise AND masks in Table 46.
Table 46. CRC Bit Mask
ORDER
ADDRESS
NAME
BIT-WISE AND MASK
1
0xC0
CAL0
0x003F
2
0xC1
CAL1
0x007F
3
0xC2
CAL2
0x001F
4
0xC3
CAL3
0x0FFF
5
0xC4
CAL4
0xFFFF
6
0xC5
CAL5
0x3F00
7
0xC7
CAL7
0x3F3F
8
0xC8
CAL8
0x003F
9
0xC9
CAL9
0x3FFF
10
0xCA
CAL10
0x000F
11
0xCF
CAL15
0x007F
12
0xD0
CAL16
0x3FFF
13
0xD1
CAL17
0x00FF
14
0xD2
CAL18
0x3F00
15
0xD3
CAL19
0x3F3F
16
0xD4
CAL20
0x003F
17
0x0E
ID2
0x0001
MAX17843
12-Channel, High-Voltage Smart Sensor
Data-Acquisition Interface
www.maximintegrated.com
Maxim Integrated │ 87



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