9.3.3.4
Battery Capacity
The Battery Capacity bits provide an approximate indication of the remaining battery power.
9.3.3.5
Enumeration Complete
The Enumeration Complete bit is set when the device successfully enumerates.
9.3.3.6
Authentication Error
This bit is always cleared (0).
9.3.3.7
Password Error
If the Password Fault bit is set the user-provided password does not match.
9.3.3.8
User Password Pending
The User Password Pending bit indicates that the user must enter a valid Password through the USB
interface channel.
9.3.3.9
Password Active
The Password Active bit indicates that the attached device requires a password to be entered.
9.3.3.10
Power Fault
A power fault was detected on the external probe.
9.3.3.11
Enumerating
The interface is in the process of enumerating the attached probe.
9.3.3.12
Extended Valid
The Extended Valid bit is set if the Password Error, Authentication Error, and Probe Attached status bits
are valid. Legacy Smart Sensor devices (SS-001, SS-002) have the Extended Valid bit clear, indicating that
the Password Fault, Authentication Fault, and Probe Attached bits are not valid (always set to zero).
9.3.4
Control
The Extension Control register determines the processes required for probe enumeration, the configuration of
the radio subsystem and allows the radio subsystem to acknowledge a shutdown request.
Extension Control Register
7
6
5
4
3
2
1
0
Radio Type
Reserved
Force
Enumeration
Shutdown
15 14 13
12
11
10
9
8
Radio Options
< see below >
9.3.4.1
Shutdown
The MSP processor advises the radio subsystem when power is too low to continue operation through
the Reset Pending status bit. After appropriate processing by the radio subsystem, it should set the
Shutdown bit in the control register which will force the MSP processor to shut down the sensor
interface.
Failure to generate the Shutdown command may lead to unstable operation as the measured battery
voltage continues to degrade.
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