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IMU383ZA Series User's Manual
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Master BIT and Status (BITstatus) Field
The BITstatus field is the global indication of health and status of the IMU383 Series product
(See Table 32). The LSB contains BIT information and the MSB contains status information.
There are four intermediate signals that are used to determine when masterFail and the hardware
BIT signal are asserted. These signals are controlled by various systems checks in software that
are classified into three categories: hardware, communication, and software. Instantaneous soft
failures in each of these four categories will trigger these intermediate signals, but will not trigger
the masterFail until the persistency conditions are met.
There are four intermediate signals that are used to determine when the masterStatus flag is
asserted: hardwareStatus, sensorStatus, comStatus, and softwareStatus. masterStatus is the logical
OR of these intermediate signals. Each of these intermediate signals has a separate field with
individual indication flags. Each of these indication flags can be enabled or disabled by the user.
Any enabled indication flag will trigger the associated intermediate signal and masterStatus flag.
BITstatus Field
masterFail
HardwareError
Reserved
softwareError
Reserved
masterStatus
hardwareStatus
Reserved
softwareStatus
sensorStatus
Reserved
hardwareBIT Field
The hardwareBIT field contains flags that indicate various types of internal hardware errors (See
Table 33). Each of these types has an associated message with low level error signals. The
hardwareError flag in the BITstatus field is the bit-wise OR of this hardwareBIT field.
hardwareBIT Field
reserved
accelerometerError
gyroError
selfTestError1
selfTestError2
Doc# 7430-1398-01
Table 32 IMU383 BIT Status Field
Bits
Meaning
0
0 = normal, 1 = fatal error has occurred
1
0 = normal, 1= internal hardware error
2
3
0 = normal, 1 = internal software error
4:7
N/A
8
0 = nominal, 1 = hardware, sensor, com, or
software alert
9
0 = nominal, 1 = programmable alert
10
N/A
11
0 = nominal, 1 = programmable alert
12
0 = nominal, 1 = programmable alert
13:15
N/A
Table 33 IMU383 Hardware BIT Field
Bits
Meaning
0:3
N/A
4
0 = normal, 1 = error
5
0 = normal, 1 = error
6
7
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Category
BIT
BIT
BIT
BIT
Status
Status
Status
Status
Status
Category
Hard
Hard
Hard
Hard
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