SCA8X0/21X0/3100 Series

VTI Technologies Oy

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by CTRL register (see more info in 3.2.1). Note that acceleration output data is not valid during test

and after test is started to one direction there has to be 50ms wait time before output data is used.

2.7.2.2

Monitor acceleration data during mass deflection

Acceleration data can be read out from acceleration output registers during mass deflection self-

test in start-up or during operation, in case that test is repeated by the request. Monitoring this data

it is possible to determine product frequency response and check product timing properties.

3

Addressing Space

Table 5 presents the registers of SCA8X0, SCA21X0 and SCA31X0 products.

Table 5:

Register address space

Addr

hex

Name

Description

Mode

(R/RW)

00

REVID

ASIC revision ID number

R

01

CTRL

Control

RW

02

STATUS

Status

R

03

RESET

Reset component

RW

04

X_LSB

X-axis (or Y- or Z-axis in SCA8X0) LSB frame

R

05

X_MSB

X-axis (or Y- or Z-axis in SCA8X0) MSB frame

R

06

Y_LSB

Y-axis LSB frame in multi-axis components

R

07

Y_MSB

Y-axis MSB frame in multi-axis components

R

08

Z_LSB

Z-axis LSB frame in multi-axis components

R

09

Z_MSB

Z-axis MSB frame in multi-axis components

R

0A

Reserved

-

...

Reserved

-

11

Reserved

-

12

TEMP_LSB

Temperature LSB frame

R

13

TEMP_MSB

Temperature MSB frame

R

14

Reserved

-

15

Reserved

-

16

INT_STATUS Interrupt status register in multi-axis components

R

17

Reserved

-

...

Reserved

-

26

Reserved

-

27

ID

Component ID

RW

28

Reserved

-

...

Reserved

-

3F

Reserved

-

3.1

Output registers

3.1.1

X axis acceleration output

3.1.1.1

X_LSB

Address: 4h

Bits

Mode

Initial

Value

Name

Description

7:0

R

00h

DATA

X-axis LSB frame (or Y-axis or Z-axis in SCA8X0)

Read always X_MSB prior to X_LSB.