MPR084

Sensors

12

Freescale Semiconductor

Preliminary

3.6

Maximum Number of Touched Positions Register

The Maximum Number of Touched Positions Register adjusts the number of keys that can be concurrently reported as touched.

Figure 16. Maximum Number of Touched Positions Registers

3.7

Electrode Channel Enable Mask Register

of the Electrode Channel Mask Register is 0x0C.

Figure 17. Electrode Channel Enable Mask Position Register

7

6

543210

R0

0

0

0

0

TPC

W

Reset:

0

0

000100

= Unimplemented

Table 6. Maximum Number of Touched Positions Register Field Descriptions

Field

Description

2:0

TPC

Touched Positions Count – The Touched Positions Count selects or reports the

number of simultaneously reported touches.

000 Encoding 0 – Sets the number of allowed touches to 0

~

111 Encoding 7 – Sets the number of allowed touches to 7

7

6

543210

R

E8EN

E7EN

E6EN

E5EN

E4EN

E3EN

E2EN

E1EN

W

Reset:

1

1

111111

= Unimplemented

Table 7. Electrode Channel Enable Mask Register Field Descriptions

Field

Description

7

E8EN

Electrode 8 Enable – The Electrode 8 Enable bit enables or disables electrode

number 8.

0 Electrode 8 Disable

1 Electrode 8 Enable

6

E7EN

Electrode 7 Enable – The Electrode 7 Enable bit enables or disables electrode

number 7.

0 Electrode 7 Disable

1 Electrode 7 Enable

5

E6EN

Electrode 6 Enable – The Electrode 6 Enable bit enables or disables electrode

number 6.

0 Electrode 6 Disable

1 Electrode 6 Enable

4

E5EN

Electrode 5 Enable – The Electrode 5 Enable bit enables or disables electrode

number 5.

0 Electrode 5 Disable

1 Electrode 5 Enable