SCA3000-D01 datasheet(21/43 Pages) VTI

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SCA3000 Series

VTI Technologies Oy

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Doc.Nr. 8257300A.07

Rev.A.07

Address value: 00010

Bits

Initial

Value

Name

Description

Note

7:6

Reserved

REQ_Z

1 – Require trigger on Z-channel

0 – Not required

REQ_X

1 – Require trigger on X-channel

0 – Not required

REQ_Y

1 – Require trigger on Y-channel

0 – Not required

Bits 5:3 can be

used to build logical

AND operation

between channels.

Example:

X and Y = Require

X and Y, ignore Z

→ 00 011 011

EN_Z

1 – Enable trigger on Z-channel

0 – Not required

EN_X

1 – Enable trigger on X-channel

0 – Not required

EN_Y

1 – Enable trigger on Y-channel

0 – Not required

Bits 2:0 can be

used to build logical

OR operation

between channels.

Example:

X or Y = Disable Z

→ 00 000 011

Address value: 00011

Bits

Initial

Value

Name

Description

7:0

10h or 08h

Y_TH

Threshold for Y-acceleration change when MD

is used.

Address value: 00100

Bits

Initial

Value

Name

Description

7:0

10h or 08h

X_TH

Threshold for X-acceleration change when MD

is used.

Address value: 00101

Bits

Initial

Value

Name

Description

7:0

10h or 08h

Z_TH

Threshold for Z-acceleration change when MD is

used.

Initial values for registers MD_X_TH, MD_Y_TH and MD_Z_TH vary with SCA3000 product types.

Initial value is:

•

10h for SCA3000-D01, SCA3000-D02, SCA3000-E01 and SCA3000-E02

•

08h for SCA3000-E04 and SCA3000-E05

The bit level descriptions for registers MD_X_TH, MD_Y_TH and MD_Z_TH are presented in,

Table 11 ...Table 14 below. The threshold levels are in unsigned format and they are absolute

values for the acceleration that triggers the motion detector interrupt. Values presented below are

typical threshold values and they are not factory calibrated.

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