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ADIS16488/PCBZ データシート(PDF) 27 Page - Analog Devices

部品番号 ADIS16488/PCBZ
部品情報  Ten Degrees of Freedom Inertial Sensor
PDF  36 Pages
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
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ADIS16488/PCBZ データシート(HTML) 27 Page - Analog Devices

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Data Sheet
ADIS16488
Rev. B | Page 27 of 36
ALARMS
Each sensor has an independent alarm function that provides
controls for alarm magnitude, polarity, and enabling a dynamic
rate-of-change option. The ALM_STS register (see Table 49)
contains the alarm output flags and the FNCTIO_CTRL register
(see Table 117) provides an option for configuring one of the
digital I/O lines as an alarm indicator.
STATIC ALARM USE
The static alarm setting compares each sensor’s output with the
trigger settings in the xx_ALM_MAGN registers (see Table 100,
Table 101, Table 102, Table 103, Table 104, Table 105, Table 106,
Table 107, Table 108, and Table 109) of that sensor. The polarity
controls for each alarm are in the ALM_CNFG_x registers (see
Table 110, Table 111, Table 112). The polarity establishes
whether greater than or less than produces an alarm condition.
The comparison between the xx_ALM_MAGN value and the
output data only applies to the upper word or 16 bits of the
output data.
DYNAMIC ALARM USE
The dynamic alarm setting provides the option of comparing the
change in each sensor’s output over a period of 48.7 ms with that
sensor’s xx_ALM_MAGN register.
Table 100. XG_ALM_MAGN (Page 3, Base Address = 0x28)
Bits
Description (Default = 0x0000)
[15:0]
X-axis gyroscope alarm threshold settings,
Twos complement, 0°/sec = 0x0000, 1 LSB = 0.02°/sec
Table 101. YG_ALM_MAGN (Page 3, Base Address = 0x2A)
Bits
Description (Default = 0x0000)
[15:0]
Y-axis gyroscope alarm threshold settings,
Twos complement, 0°/sec = 0x0000, 1 LSB = 0.02°/sec
Table 102. ZG_ALM_MAGN (Page 3, Base Address = 0x2C)
Bits
Description (Default = 0x0000)
[15:0]
Z-axis gyroscope alarm threshold settings,
Twos complement, 0°/sec = 0x0000, 1 LSB = 0.02°/sec
Table 103. XA_ALM_MAGN (Page 3, Base Address = 0x2E)
Bits
Description (Default = 0x0000)
[15:0]
X-axis accelerometer alarm threshold settings,
Twos complement, 0 g = 0x0000, 1 LSB = 0.8 mg
Table 104. YA_ALM_MAGN (Page 3, Base Address = 0x30)
Bits
Description (Default = 0x0000)
[15:0]
Y-axis accelerometer alarm threshold settings,
Twos complement, 0 g = 0x0000, 1 LSB = 0.8 mg
Table 105. ZA_ALM_MAGN (Page 3, Base Address = 0x32)
Bits
Description (Default = 0x0000)
[15:0]
Z-axis accelerometer alarm threshold settings,
Twos complement, 0 g = 0x0000, 1 LSB = 0.8 mg
Table 106. XM_ALM_MAGN (Page 3, Base Address = 0x34)
Bits
Description (Default = 0x0000)
[15:0]
X-axis magnetometer alarm threshold settings,
Twos complement, 0 gauss = 0x0000,
1 LSB = 0.1 mgauss
Table 107. YM_ALM_MAGN (Page 3, Base Address = 0x36)
Bits
Description (Default = 0x0000)
[15:0]
Y-axis magnetometer alarm threshold settings,
Twos complement, 0 gauss = 0x0000,
1 LSB = 0.1 mgauss
Table 108. ZM_ALM_MAGN (Page 3, Base Address = 0x38)
Bits
Description (Default = 0x0000)
[15:0]
Z-axis magnetometer alarm threshold settings,
Twos complement, 0 gauss = 0x0000,
1 LSB = 0.1 mgauss
Table 109. BR_ALM_MAGN (Page 3, Base Address = 0x3A)
Bits
Description (Default = 0x0000)
[15:0]
Z-axis barometer alarm threshold settings,
Twos complement, 0 bar = 0x0000, 1 LSB = 40 µbar
Table 110. ALM_CNFG_0 (Page 3, Base Address = 0x20)
Bits
Description (Default = 0x0000)
15
X-axis accelerometer alarm (1 = enabled)
14
Not used
13
X-axis accelerometer alarm polarity (1 = greater than)
12
X-axis accelerometer dynamic enable (1 = enabled)
11
Z-axis gyroscope alarm (1 = enabled)
10
Not used
9
Z-axis gyroscope alarm polarity (1 = greater than)
8
Z-axis gyroscope dynamic enable (1 = enabled)
7
Y-axis gyroscope alarm (1 = enabled)
6
Not used
5
Y-axis gyroscope alarm polarity (1 = greater than)
4
Y-axis gyroscope dynamic enable (1 = enabled)
3
X-axis gyroscope alarm (1 = enabled)
2
Not used
1
X-axis gyroscope alarm polarity (1 = greater than)
0
X-axis gyroscope dynamic enable (1 = enabled)



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