AN4506 Просмотр технического описания (PDF) - STMicroelectronics

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AN4506

L3GD20H: 3-axis digital output gyroscope

STMicroelectronics 

Digital filters

AN4506

HPM1

1

1

Table 14. High-pass filter mode configuration

HPM0

High-pass filter mode

0

Normal mode (reset by reading the REFERENCE register)

1

Autoreset on interrupt event

4.3.1

Normal mode

In this configuration the high-pass filter can be reset by reading the REFERENCE register,

instantly deleting the DC component of the angular rate.

Figure 8. High-pass filter reset by reading the REFERENCE register

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4.3.2

".W

REFERENCE mode

In this configuration the output data is calculated as the difference between the input

angular rate and the content of the REFERENCE register. This register is in 2’s complement

representation and the value of 1 LSB of these 8-bit registers depends on the selected full

scale (Table 15).

Full scale

245

500

2000

Table 15. REFERENCE mode LSB value

REFERENCE mode LSB value (mdps)

~2

~4

~16

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DocID026442 Rev 2

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