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Table 4-6: pass-through registers – PNI SENtral MandM User Manual

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PNI Sensor Corporation

Doc #1020129 revE

SENtral M&M Technical Datasheet

Page 21

Since operating in Pass-Through State requires stopping the SENtral algorithm, Pass-

Through State is not recommended for accessing sensor data unless reliable heading data is

not required. If sensor data and reliable heading data are both desired, they can both be

accessed during Normal Operation from the Results Registers, as given in Table 4-4.

Table 4-6 provides the registers associated with Pass-Through State.

Table 4-6: Pass-Through Registers

Register Name

Address

Register Value

AlgorithmControl

0x54

[0] 1 = StandbyEnable

0 = Disable Standby State

AlgorithmStatus

0x38

[0] 1 = SENtral in Standby State

0 = SENtral not in Standby State

PassThroughControl

0xA0

[0] 1 = Enable Pass-Through State
0 = Disable Pass-Through State

PassThroughStatus

0x9E

[0] 1 = SENtral in Pass-Through State.
0 = SENtral not in Pass-Through State.

The steps to go in and out of Pass-Through State are given below.

Write 0x01 to the AlgorithmControl register. This places SENtral in Standby State.

Write 0x01 to the PassThroughControl register. This places SENtral in Pass-Through

State.

Read the PassThroughStatus register. If bit [0] is ‘1’, then SENtral is in Pass-

Through State. This step is optional.

When you are done in Pass-Through State, write 0x00 to the PassThroughControl

register. This terminates Pass-Through mode and returns SENtral to Standby State.

Write 0x00 to the AlgorithmControl register. This takes SENtral out of Standby State

and normally will place it back into Normal Operation.