MPR084

Sensors

26

Freescale Semiconductor

Preliminary

10

Additional Features

10.1

Key Click Sound Generator

The sounder is used to drive a piezo buzzer. This output is configured by using the Sounder Register, shown in the following

section.

10.1.1 Sounder Configuration Register

Figure 29. Sounder Configuration Register

10.2

Sensor Information

The Sensor Information register is a read only register that displays a descriptor which contains static information about the

MPR084 version.

10.2.1 Sensor Information Register

Figure 30. Sensor Information Register

7

6

5

43210

R0

0

0

0

0

CP

FREQ

SEN

W

Reset:

0

0

0

00001

= Unimplemented

Table 18. Sounder Configuration Register Field Descriptions

Field

Description

2

CP

Click Period – The Click Period bit controls the length of the sounder click.

0 Sounder Click Period is 10ms

1 Sounder Click Period is 20ms

1

FREQ

Frequency – The Frequency bit controls the frequency of the driven output.

0 Sounder frequency is 1kHz

1 Sounder frequency is 2kHz

0

SEN

Sounder Enable – The Sounder Enable bit enables or disables the sounder output.

0 Disable

1 Enable

7

6

5

43210

R

SensorInfo

W

Reset:

0

1

0

00110

= Unimplemented

Table 19. Sensor Information Register Field Descriptions

Field

Description

7-0

SensorInfo

SensorInfo – The Sensor Information register describes the version information for

the part. Burst reads will display ASCII data in the following format:

VENDOR_LABEL",PN:"PRODUCT_LABEL",QUAL:"BUILD_TYPE_LABEL",VER:"

BUILD_VERSION_MAJOR"_"BUILD_VERSION_MINOR"_"BUILD_NUMBER"\0"