ADIS16480 AD [Analog Devices], ADIS16480 Datasheet - Page 34

• Manufacturer Part Number: ADIS16480
• Description: Ten Degrees of Freedom Inertial Sensor
• Manufacturer: AD [Analog Devices]

ADIS16480
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 61)
contains the alarm output flags and the FNCTIO_CTRL register
(see Table 149) 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 132 through Table 141) of that sensor. The polarity controls
for each alarm are in the ALM_CNFG_x registers (see Table 142,
Table 143, Table 144). 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 132. XG_ALM_MAGN (Page 3, Base Address = 0x28)
Bits
[15:0]
Table 133. YG_ALM_MAGN (Page 3, Base Address = 0x2A)
Bits
[15:0]
Table 134. ZG_ALM_MAGN (Page 3, Base Address = 0x2C)
Bits
[15:0]
Table 135. XA_ALM_MAGN (Page 3, Base Address = 0x2E)
Bits
[15:0]
Table 136. YA_ALM_MAGN (Page 3, Base Address = 0x30)
Bits
[15:0]
Description (Default = 0x0000)
X-axis gyroscope alarm threshold settings,
Twos complement, 0°/sec = 0x0000, 1 LSB = 0.02°/sec
Description (Default = 0x0000)
Y-axis gyroscope alarm threshold settings,
Twos complement, 0°/sec = 0x0000, 1 LSB = 0.02°/sec
Description (Default = 0x0000)
Z-axis gyroscope alarm threshold settings,
Twos complement, 0°/sec = 0x0000, 1 LSB = 0.02°/sec
Description (Default = 0x0000)
X-axis accelerometer alarm threshold settings,
Twos complement, 0 g = 0x0000, 1 LSB = 0.8 mg
Description (Default = 0x0000)
Y-axis accelerometer alarm threshold settings,
Twos complement, 0 g = 0x0000, 1 LSB = 0.8 mg
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Table 137. ZA_ALM_MAGN (Page 3, Base Address = 0x32)
Bits
[15:0]
Table 138. XM_ALM_MAGN (Page 3, Base Address = 0x34)
Bits
[15:0]
Table 139. YM_ALM_MAGN (Page 3, Base Address = 0x36)
Bits
[15:0]
Table 140. ZM_ALM_MAGN (Page 3, Base Address = 0x38)
Bits
[15:0]
Table 141. BR_ALM_MAGN (Page 3, Base Address = 0x3A)
Bits
[15:0]
Table 142. ALM_CNFG_0 (Page 3, Base Address = 0x20)
Bits
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Description (Default = 0x0000)
X-axis accelerometer alarm (1 = enabled)
Not used
X-axis accelerometer alarm polarity (1 = greater than)
X-axis accelerometer dynamic enable (1 = enabled)
Z-axis gyroscope alarm (1 = enabled)
Not used
Z-axis gyroscope alarm polarity (1 = greater than)
Z-axis gyroscope dynamic enable (1 = enabled)
Y-axis gyroscope alarm (1 = enabled)
Not used
Y-axis gyroscope alarm polarity (1 = greater than)
Y-axis gyroscope dynamic enable (1 = enabled)
X-axis gyroscope alarm (1 = enabled)
Not used
X-axis gyroscope alarm polarity (1 = greater than)
X-axis gyroscope dynamic enable (1 = enabled)
Description (Default = 0x0000)
Z-axis accelerometer alarm threshold settings,
Twos complement, 0 g = 0x0000, 1 LSB = 0.8 mg
Description (Default = 0x0000)
X-axis magnetometer alarm threshold settings,
Twos complement, 0 gauss = 0x0000,
1 LSB = 0.1 mgauss
Description (Default = 0x0000)
Y-axis magnetometer alarm threshold settings,
Twos complement, 0 gauss = 0x0000,
1 LSB = 0.1 mgauss
Description (Default = 0x0000)
Z-axis magnetometer alarm threshold settings,
Twos complement, 0 gauss = 0x0000,
1 LSB = 0.1 mgauss
Description (Default = 0x0000)
Z-axis barometer alarm threshold settings,
Twos complement, 0 bar = 0x0000, 1 LSB = 40 µbar
Data Sheet