MPR03X

Sensors

22

Freescale Semiconductor

8.4.2

Noise Half Delta Register

The Noise Half Delta register is used to set the Noise Half Delta for the third level filter. The address of the Noise Half Delta

Register is 0x27.

Figure 28. Noise Half Delta Register

8.4.3

Noise Count Limit Register

The Noise Count Limit register is used to set the Noise Count Limit for the Third Level Filter. The address of the Noise Half Delta

Register is 0x28.

Figure 29. Noise Count Limit Register

7

6

543210

R0

0

NHD

W

Reset:

0

0

000000

= Unimplemented

Table 15. Noise Half Delta Register Field Descriptions

Field

Description

5:0

NHD

Noise Half Delta – The Noise Half Delta determines the incremental change when

non-noise drift is detected.

000000 DO NOT USE THIS CODE

000001 Encoding 1 – Sets the Noise Half Delta to 1

~

111111 Encoding 63 – Sets the Noise Half Delta to 63

7

6

543210

R0

0

0

0

NCL

W

Reset:

0

0

000000

= Unimplemented

Table 16. Noise Count Limit Register Field Descriptions

Field

Description

3:0

NCL

Noise Count Limit – The Noise Count Limit determines the number of samples consecutively

greater than the Max Half Delta necessary before it can be determined that it is non-noise.

0000 Encoding 0 – Sets the Noise Count Limit to 1 (every time over Max Half Delta)

0001 Encoding 1 – Sets the Noise Count Limit to 2 consecutive samples over Max Half Delta

~

1111 Encoding 15 – Sets the Noise Count Limit to 15 consecutive samples over Max Half Delta